---
product_id: 1153701
title: "Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Pentax Digital DSLR Camera"
brand: "sigma"
price: "KD 330.65"
currency: KWD
in_stock: true
reviews_count: 7
category: "Sigma"
url: https://www.desertcart.com.kw/products/1153701-sigma-50-500mm-f-4-5-6-3-apo-dg
store_origin: KW
region: Kuwait
---

# Hyper-Sonic Motor for fast, quiet autofocus 10x ultra telephoto zoom Optical Stabilization for sharp handheld shots Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Pentax Digital DSLR Camera

**Brand:** sigma
**Price:** KD 330.65
**Availability:** ✅ In Stock

## Summary

> 🔍 Zoom beyond limits, shoot beyond expectations.

## Quick Answers

- **What is this?** Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Pentax Digital DSLR Camera by sigma
- **How much does it cost?** KD 330.65 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/1153701-sigma-50-500mm-f-4-5-6-3-apo-dg)

## Best For

- sigma enthusiasts

## Why This Product

- Trusted sigma brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Steady Shots Anywhere:** Optical Stabilization technology lets you shoot crisp, blur-free images handheld—even in low light—so you never miss that perfect moment.
- • **Massive 50-500mm Reach:** Capture everything from sweeping landscapes to distant wildlife with a versatile 10x zoom range that transforms your Pentax DSLR into a powerhouse telephoto rig.
- • **Whisper-Quiet Autofocus:** Hyper-Sonic Motor ensures lightning-fast, silent focusing, ideal for discreet shooting in professional or natural settings.
- • **Ergonomic & Ready for Action:** Includes a tripod collar for balanced handling of this 4.3-pound beast, making long shoots comfortable and stable—because your gear should work as hard as you do.
- • **Crystal-Clear Color & Sharpness:** Four Special Low Dispersion glass elements minimize chromatic aberration, delivering vibrant colors and razor-sharp detail across the entire zoom range.

## Overview

The Sigma 50-500mm f/4.5-6.3 APO DG OS HSM lens for Pentax DSLR cameras offers an impressive 10x ultra telephoto zoom range (75-750mm equivalent on APS-C), enhanced by Optical Stabilization for handheld clarity and a Hyper-Sonic Motor for fast, quiet autofocus. Featuring four Special Low Dispersion glass elements, it delivers sharp, high-contrast images with minimal color fringing. Weighing 4.34 pounds and equipped with a tripod collar, this lens balances versatility and professional-grade performance for wildlife, sports, and landscape photography.

## Description

The Sigma 50-500mm F/4.5-6.3 APO DG OS HSM Lens for Pentax covers a lot of ground, the 10x zoom can be used on everything from landscape and portrait photos to sports action and wildlife photography. It uses 4 Special Low Dispersion (SLD) glass elements for optimum color correction and sharpness through the entire zoom range, and a Hyper-Sonic Motor (HSM) provides quiet and high-speed auto focusing. The Optical Stabilization (OS) system allows you to use the lens even off a tripod to capture sharp, clear photos. This 50-500mm lens is designed for use with Pentax DSLR cameras--with an APS-C-sized sensor, the effective zoom range is approximately 75-750mm in 35mm equivalent. Note: The Pentax mount tele converter cannot be used with this lens. Note: Pentax mounts do not have an aperture ring--some functions may not work depending on the camera model. Note: It is not possible to use the AF and the built-in OS function of this lens when attaching it to film SLR cameras as well as Pentax *ist series and K100D. Note: When using the OS function of a lens with a camera which incorporates a stabilizer unit, please turn the camera''s stabilizer unit off. 10x high zoom, ultra telephoto zoom lens Designed for use with digital SLR cameras, including cameras with APS-C size sensors with an effective focal length of about 75 to 750mm. OS System (Optical Stabilization) allowing handheld photography even in low-light situation HSM (Hyper-Sonic Motor) ensures a quiet & high-speed auto focus

Review: Sigma Bigma WorksMa - The Sigma Bigma is a great lens. The price is not trivial, but well without reason and cheaper than any comparable considering the level of performance. I shoot almost every day, just for the joy of doing it. My primary interest being photography, I'm also a camera collector. Mostly of things I would have liked to have owned in their day. Leica screw mounts are my favorites from early to late. I have an extraordinary IIIg, in the first 25 ever made that from all we can tell was never actually used, i.e. a showroom piece. It needed a CLA. To stipulate, I was a working pro for 11 years, doing news, advertising illustration and anything else I could sell. I've owned and worked with sub 35mm to 8x10. I loved the work, the reasons I left were complex.Before that I worked as an apprentice for four years in an old school portrait house. But I've worked with and own all manner of lenses. In my earliest days we still worked with Big Berthas, 5x7 Graflex SLRS with VERY Long lenses or the Baby Berthas which were 4x5 Graflex SLRs with much the same lenses mounted. i.e. there was no specific lens. But imagine a Graflex, hood and all, with 2,000 or 3,000 mm lens. My preferred cameras of the period were Nikon Fs and compatible lenses. For the most part I was Nikon-Nikon. Then it was Olympus OMs - I was no longer in the trade, but they suited me. Now it's Canon, no dig on Nikon or Olympus, which won me over after my working Nikons were stolen. The Bigma is a great lens. There is no directly comparable L lens and just as well, It would be a very tough call if faced with that call. I might have scraped around to buy one. But price is a factor in any even. But quality matters to me. I've owned a first rate Canon D0 70-300, a great lens, which costs a fair chunk. It was out of action for a few weeks and I bought a Sigma 70-300 substitute until the damage could be repaired. The Sigma costs a fraction of the L and it's performance was pretty damned good and it had some nice features, e.g. Macro focusing, that the Canon didn't have. Now they come with this monster. My primary camera now is a Canon 5D Mark II and the full frame is brutal on lenses. I sometimes see reviews from users who cite vignetting on cropped sensor cameras from a lens that in my experience doesn't vignette much on the full frame at full frame wide open, but most primes vignette a bit wide open. This Sigma is a significantly different lens than the previous Sigma lens of the same zoom range, i.e. 50-500. For one thing the filter size has increased substantially which seems to reflect not random desire, but n overall improvement of the optics. It might seem that going 50-500 is a real stretch given the weight of this monster, 4.5 pounds, which should be double strapped or bagged for carry with the 5D2. It's not. There's nothing more frustrating than have a prime 500mm mounted and suddenly you need a quick shot of something close, not wide, but normal; the Bigma covers it. This is not a lens you want to wear routinely for 10x zoom, as we sometimes do with the consumer-prosumer cameras. That weight will wear on you. I'm now pushing 70, severely arthritic and easily fatigued. I have to balance not just how I carry, but what I carry. Yet, I so love full frame. I finally stopped carrying film cameras on travel, both from added weight and the vastly improved quality of digital. For me in most circumstances it's superior. Some have mentioned monopods as a minimum requirement. There are alternatives, i.e. similar to movie mounts. I don't disagree with the monopod and use mine carbon fiber lightweight when I can. This is where the f 6.3 maximum aperture comes into play at longer focal lengths. At nominal 500 mm, Bob Atkins says it's very close to an honest 500mm and while that changes as you move to shorter focusing distances so the focal length is less. The combination of very long focal length, weight, etc., make controlling shake or camera movement critical. This is one of my highest areas of praise. Working from a sitting position or similar, using my chest to brace elbows, I've managed crisp pictures at 1/5th or less wide open. Not what I'd recommend trying for a money shot, but it wasn't a fluke. I've done a lot of sharp images at speeds of under 1/30th of a second. I was always good at long hand=helds, but age doesn't help as a rule, so I'm reasonably convinced that it's a good system. I have not done exhaustive tests of the lengths at different focal lens and f/stops. I will say this. Canon specs call for a lens that is faster than f/5.6 to make its autofocusing work. been surprised the auto-focus works as well as it does, which is 90 percent of the time which surprises me given that it works even at f 6.3 most of the time including times when i have trouble seeing what it's focusing on. I was born and raised a manual focus man who appreciates the auto-focus systems. But I try not to pretend it answers for everything. People who claim one camera system or another is superior on focusing miss something. The further up the ladder you move on pro or semi-pro cameras, the more you're supposed to know. As the "Digital Journalist" said, Auto-Focus is a wonderful crutch, but every user needs to know how to focus the thing. The manual focus override works well on this lens. I can b difficult in low light/low contest if there's not enough contrast for the focusing system. I can only that no one should plan a money shot in a place they haven't checked out and considered why interrupts focusing sensors. With this lens, when you need selective focus, you really want to ride heard on focus. One other note, because there are some very good posts on this lens. Having working with a top quality 500mm prime, I don't think this lens will produced the same quality image as an equivalent prime. FWIW, None of my expensive Canon L's really ensure up to the primes at the same focal length. Don't mistake me. The 24-70 and 24-105 and the rest are great lenses. Just that s a rule, a prime is different to the discerning eye. Butto finish this off, I'm very impressed by the low light contrast of the lens. I've shot images of Dandelions and flowers of ornamental grass, wide open,where this lens makes a higher contrast image (int he right way) that allows you to see just how finely focused and high definition this lens is capable of. At thispoint, for this focal length soon, there's not a better one on the market with this much verstatility. If the relatively slow F/Stop bothers you, remember this, for from 4.5 to F/2.8 would probably cos at least twice this weight. If you're a birder, especially if you're using a high MP 1.6 crop of real quality, e.g. the 7D, this is a really important lens. Especially if you can sit on your deck or porch or whatever. You shouldn't plan on using this lens with a non-Sigma extender. That's not unusual. I have some lens that work fine with non-oem extenders. But there are canon lenses that really don't do well with non-OEM brands. Also, if you're lucky and have enough light, it will probably auto-focus with the 1.4x, but almost certainly not the 2.0x. Lastly, there are two Sigma 50-500mm lenses. The old one doesn't measure up to the new lens. It tends to have less contrast and crispness. It's not a bad lens. But the difference between the old discontinued lens and this one is huge. I've used the old one and wouldn't buy it. This one, I bought and I own. I could have sent it back. I did send back a prime lens of another make in this area of focal length.
Review: Sigma 50-500 OS - Very versatile lens- period! {Positives: --massive reach --massive versatilty --very sharp for an ultra telephoto lens (I've ompared photos between this lens and canon's 100-400, and this lens was just as sharp, if not sharper, than the 100-400) --optical stabilization is really nice- works very well- and is especially appreciated on such a heavy lens --takes nice portraits with nice color, contrast and sharpness staight out of camera- although a little boost in photoshop really helps- not much is needed htough --excellent for nature photography -Takes some pretty awesome moon shots with pretty good detail -comes with a tripod collar which the canon lens does not. (I use the collar to carry the lens and camera with- UI flip the collar so that it's at the top and carry the camera like a briefcase with a handle- makes it much easier to carry this beast of a lens around. --fairly close focussing- good for close-up shots {Weaknesses: --Heavy when using all day handheld --autofocus hunts around more than some of my other lenses, and has a bit of a problem locking onto smaller objects like birds or lower contrast subjects- especially when trying to zero in on a bird in flight against a clear sky- althouygh I do only use spot metering, which may be one of the reasons --lens telephoto loosens aftetr awhile, causing lens to slam open if not locked and tilted down or to slam closed if tilted up. --I had a problem with hte lens causing 'error 99' (can';t remember the error code # now) where I would have to remove the lens from my canon 7d, then reattaqch the lens in order to get it to work again- sent it in, and it took almost 3 months to get the lens back from Sigma which I felt was very excessive- as well, there was abswolutely no comunication from Sigma informing me of the problem or progress on the lens while it was in the shop- would hgave been ice to at least knowe how they were making out on the lens since it was taking so long. The lens however hasn't so far caused tghe error again, however, I haven't been using the lens much either as I have been focusing on street photography and macro photography lately- however, I will be using hte lens again thjis winter for wildlife shots and snomobile races etc. we'll see if hte problem reoccures or not --f4.5 is pretty large fstop for the low end of the range- you need some pretty good light to use htis lens- or a good camera with good ISO capabilities- my Canon 7d it seems I can't really go much higher than 800 as too nmuch noise comes into play then All in aLL, I'm quite pleased with hte lens despite the negatives- it's a very versatile lens with a massive range, especially on a crop sernsor camera like the canon 7d- the long end works out to be about 800mm or thereabouts- and htis allows you to really reach out and grab shots of those warry animals that were always just out of reach with other lenses

## Features

- Sigma 50-500mm f/4.5-6.3 DG OS HSM APO Lens - Pentax

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003A6H2JS |
| Best Sellers Rank | #321 in Digital Camera Accessory Kits #2,760 in SLR Camera Lenses |
| Customer Reviews | 4.0 4.0 out of 5 stars (555) |
| Date First Available | February 1, 2010 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4.34 pounds |
| Item model number | 738109 |
| Manufacturer | Sigma Corporation of America |
| Product Dimensions | 8.62 x 4.09 x 4.09 inches |

## Product Details

- **Brand:** Sigma
- **Camera Lens Description:** 500 millimetres
- **Compatible Mountings:** Pentax KAF3
- **Focal Length Description:** 50-500 millimeters
- **Lens Type:** Telephoto

## Images

![Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Pentax Digital DSLR Camera - Image 1](https://m.media-amazon.com/images/I/71bN-tiv4hL.jpg)
![Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Pentax Digital DSLR Camera - Image 2](https://m.media-amazon.com/images/I/31rJ4oEHMGL.jpg)
![Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Pentax Digital DSLR Camera - Image 3](https://m.media-amazon.com/images/I/91Ljr5OIHTL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Is this a great lens to bring on safari? Is it too cumbersome? I have a nikon D810. Thank you in advance for your feedback! I appreciate your help.**
A: YES, Here is why. This is my most used lens.  I am on my second one in well over 10 years..  It takes very good pictures. It is reasonable fast. I certainly would NOT use it for portraits .  or high-end magazine shoots.  It is very heavy and large.  I carry it with a shoulder strap While riding a motorcycle at speeds as slow as 5 PPH and as fast as  80 MPH+ , I have won a a few Armature contests  with some of my in motion pictures, i Took while flying down the road on my motorcycle, in the white mountains, and on the Tail of the Dragon. as well as the Swiss Alps and most of Europe.    Again, for the money and the ability to get pictures at a very long distance, It is worth the money...If you can handle the weight on your shoulder.
AGAIN.  This is NOT a high quality  portrait lens. And it is HEAVY, So do not plan an all day shoot unless you can take the weight on your shoulder.

**Q: I have a Nikon D5100 will this work on my camera ?**
A: Yes but keep in mind the DX Sensor will give you a field of view 75mm-750mm. I use it on my D3s and D800 - it's focus is very zippy almost as fast as my 70-200mm VR1 - The HSM (Hypersonic Motor) will work with your D5100 since your camera body does not have a built-in focus motor.

**Q: will it work on a Canon 70D?**
A: Presuming that you order this lens with a Canon mount, it is my belief that it would work with a  Canon 70D. I own this lens and have used it both on my Canon 5DIII and my Canon 7DII.  However, I think Sigma's  150-600mm F5-6.3 Contemporary is a better lens for a variety of reasons.  If you could afford the Sports version, even better, but if you were spending that much you might want to think about a Canon 100-400 (newest version) and a 1.4 teleconverter.   I have not been happy with the Sigma 50-500.  At the 50 end it is useless for all intents and purposes.  At the opposite end, the lens is generously called 500mm.  It is my impression that its maximum range is around 470mm.  Also, it is built on older technology than the 150-600.  Its autofocus is slow and when you move to the larger magnifications you quickly step up to higher F-stops where the ability of the lens to focus quickly is even more limited.  That said, I have seen some great photos taken with this lens, but that is not an experience I have had.  A final note, Canon is reported to be releasing a 200-600 non-L lens in 2017 that will be priced below the new 100-400L.  If you can wait, this might be a solution for you.

**Q: Is this lens 740.00 better than the Sigma 150-500 lens**
A: For me, I have preferred it over 150-500 as it starts from 50mm rather than 150mm.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Sigma Bigma WorksMa
*by O***G on October 23, 2011*

The Sigma Bigma is a great lens. The price is not trivial, but well without reason and cheaper than any comparable considering the level of performance. I shoot almost every day, just for the joy of doing it. My primary interest being photography, I'm also a camera collector. Mostly of things I would have liked to have owned in their day. Leica screw mounts are my favorites from early to late. I have an extraordinary IIIg, in the first 25 ever made that from all we can tell was never actually used, i.e. a showroom piece. It needed a CLA. To stipulate, I was a working pro for 11 years, doing news, advertising illustration and anything else I could sell. I've owned and worked with sub 35mm to 8x10. I loved the work, the reasons I left were complex.Before that I worked as an apprentice for four years in an old school portrait house. But I've worked with and own all manner of lenses. In my earliest days we still worked with Big Berthas, 5x7 Graflex SLRS with VERY Long lenses or the Baby Berthas which were 4x5 Graflex SLRs with much the same lenses mounted. i.e. there was no specific lens. But imagine a Graflex, hood and all, with 2,000 or 3,000 mm lens. My preferred cameras of the period were Nikon Fs and compatible lenses. For the most part I was Nikon-Nikon. Then it was Olympus OMs - I was no longer in the trade, but they suited me. Now it's Canon, no dig on Nikon or Olympus, which won me over after my working Nikons were stolen. The Bigma is a great lens. There is no directly comparable L lens and just as well, It would be a very tough call if faced with that call. I might have scraped around to buy one. But price is a factor in any even. But quality matters to me. I've owned a first rate Canon D0 70-300, a great lens, which costs a fair chunk. It was out of action for a few weeks and I bought a Sigma 70-300 substitute until the damage could be repaired. The Sigma costs a fraction of the L and it's performance was pretty damned good and it had some nice features, e.g. Macro focusing, that the Canon didn't have. Now they come with this monster. My primary camera now is a Canon 5D Mark II and the full frame is brutal on lenses. I sometimes see reviews from users who cite vignetting on cropped sensor cameras from a lens that in my experience doesn't vignette much on the full frame at full frame wide open, but most primes vignette a bit wide open. This Sigma is a significantly different lens than the previous Sigma lens of the same zoom range, i.e. 50-500. For one thing the filter size has increased substantially which seems to reflect not random desire, but n overall improvement of the optics. It might seem that going 50-500 is a real stretch given the weight of this monster, 4.5 pounds, which should be double strapped or bagged for carry with the 5D2. It's not. There's nothing more frustrating than have a prime 500mm mounted and suddenly you need a quick shot of something close, not wide, but normal; the Bigma covers it. This is not a lens you want to wear routinely for 10x zoom, as we sometimes do with the consumer-prosumer cameras. That weight will wear on you. I'm now pushing 70, severely arthritic and easily fatigued. I have to balance not just how I carry, but what I carry. Yet, I so love full frame. I finally stopped carrying film cameras on travel, both from added weight and the vastly improved quality of digital. For me in most circumstances it's superior. Some have mentioned monopods as a minimum requirement. There are alternatives, i.e. similar to movie mounts. I don't disagree with the monopod and use mine carbon fiber lightweight when I can. This is where the f 6.3 maximum aperture comes into play at longer focal lengths. At nominal 500 mm, Bob Atkins says it's very close to an honest 500mm and while that changes as you move to shorter focusing distances so the focal length is less. The combination of very long focal length, weight, etc., make controlling shake or camera movement critical. This is one of my highest areas of praise. Working from a sitting position or similar, using my chest to brace elbows, I've managed crisp pictures at 1/5th or less wide open. Not what I'd recommend trying for a money shot, but it wasn't a fluke. I've done a lot of sharp images at speeds of under 1/30th of a second. I was always good at long hand=helds, but age doesn't help as a rule, so I'm reasonably convinced that it's a good system. I have not done exhaustive tests of the lengths at different focal lens and f/stops. I will say this. Canon specs call for a lens that is faster than f/5.6 to make its autofocusing work. been surprised the auto-focus works as well as it does, which is 90 percent of the time which surprises me given that it works even at f 6.3 most of the time including times when i have trouble seeing what it's focusing on. I was born and raised a manual focus man who appreciates the auto-focus systems. But I try not to pretend it answers for everything. People who claim one camera system or another is superior on focusing miss something. The further up the ladder you move on pro or semi-pro cameras, the more you're supposed to know. As the "Digital Journalist" said, Auto-Focus is a wonderful crutch, but every user needs to know how to focus the thing. The manual focus override works well on this lens. I can b difficult in low light/low contest if there's not enough contrast for the focusing system. I can only that no one should plan a money shot in a place they haven't checked out and considered why interrupts focusing sensors. With this lens, when you need selective focus, you really want to ride heard on focus. One other note, because there are some very good posts on this lens. Having working with a top quality 500mm prime, I don't think this lens will produced the same quality image as an equivalent prime. FWIW, None of my expensive Canon L's really ensure up to the primes at the same focal length. Don't mistake me. The 24-70 and 24-105 and the rest are great lenses. Just that s a rule, a prime is different to the discerning eye. Butto finish this off, I'm very impressed by the low light contrast of the lens. I've shot images of Dandelions and flowers of ornamental grass, wide open,where this lens makes a higher contrast image (int he right way) that allows you to see just how finely focused and high definition this lens is capable of. At thispoint, for this focal length soon, there's not a better one on the market with this much verstatility. If the relatively slow F/Stop bothers you, remember this, for from 4.5 to F/2.8 would probably cos at least twice this weight. If you're a birder, especially if you're using a high MP 1.6 crop of real quality, e.g. the 7D, this is a really important lens. Especially if you can sit on your deck or porch or whatever. You shouldn't plan on using this lens with a non-Sigma extender. That's not unusual. I have some lens that work fine with non-oem extenders. But there are canon lenses that really don't do well with non-OEM brands. Also, if you're lucky and have enough light, it will probably auto-focus with the 1.4x, but almost certainly not the 2.0x. Lastly, there are two Sigma 50-500mm lenses. The old one doesn't measure up to the new lens. It tends to have less contrast and crispness. It's not a bad lens. But the difference between the old discontinued lens and this one is huge. I've used the old one and wouldn't buy it. This one, I bought and I own. I could have sent it back. I did send back a prime lens of another make in this area of focal length.

### ⭐⭐⭐⭐ Sigma 50-500 OS
*by N***Z on November 20, 2011*

Very versatile lens- period! {Positives: --massive reach --massive versatilty --very sharp for an ultra telephoto lens (I've ompared photos between this lens and canon's 100-400, and this lens was just as sharp, if not sharper, than the 100-400) --optical stabilization is really nice- works very well- and is especially appreciated on such a heavy lens --takes nice portraits with nice color, contrast and sharpness staight out of camera- although a little boost in photoshop really helps- not much is needed htough --excellent for nature photography -Takes some pretty awesome moon shots with pretty good detail -comes with a tripod collar which the canon lens does not. (I use the collar to carry the lens and camera with- UI flip the collar so that it's at the top and carry the camera like a briefcase with a handle- makes it much easier to carry this beast of a lens around. --fairly close focussing- good for close-up shots {Weaknesses: --Heavy when using all day handheld --autofocus hunts around more than some of my other lenses, and has a bit of a problem locking onto smaller objects like birds or lower contrast subjects- especially when trying to zero in on a bird in flight against a clear sky- althouygh I do only use spot metering, which may be one of the reasons --lens telephoto loosens aftetr awhile, causing lens to slam open if not locked and tilted down or to slam closed if tilted up. --I had a problem with hte lens causing 'error 99' (can';t remember the error code # now) where I would have to remove the lens from my canon 7d, then reattaqch the lens in order to get it to work again- sent it in, and it took almost 3 months to get the lens back from Sigma which I felt was very excessive- as well, there was abswolutely no comunication from Sigma informing me of the problem or progress on the lens while it was in the shop- would hgave been ice to at least knowe how they were making out on the lens since it was taking so long. The lens however hasn't so far caused tghe error again, however, I haven't been using the lens much either as I have been focusing on street photography and macro photography lately- however, I will be using hte lens again thjis winter for wildlife shots and snomobile races etc. we'll see if hte problem reoccures or not --f4.5 is pretty large fstop for the low end of the range- you need some pretty good light to use htis lens- or a good camera with good ISO capabilities- my Canon 7d it seems I can't really go much higher than 800 as too nmuch noise comes into play then All in aLL, I'm quite pleased with hte lens despite the negatives- it's a very versatile lens with a massive range, especially on a crop sernsor camera like the canon 7d- the long end works out to be about 800mm or thereabouts- and htis allows you to really reach out and grab shots of those warry animals that were always just out of reach with other lenses

### ⭐⭐⭐⭐⭐ Review
*by B***Y on November 23, 2018*

gran alcance y definición de la imagen. muy versátil por su amplia distancia focal. pesa mucho. monopie es casi imprescindible

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