CANON Extension Tube EF 25 II

Quality product that works well with both Canon EF or EF-S lenses.Bought this Canon brand ( Canon Extension Tube EF 25 II ) instead of the Kenko extension tubes set because I didn't want to risk attaching an Expensive 70-200mm F2.8 IS II Zoom Lens to a Cheap kenko extension tube and risk the possibility of lens breaking off at the mounts and smashing onto the ground.I have trusted Canon products and will stick with them.This Canon Extension Tube EF 25 II , works great with the Canon 70-200mm.Also tested it with my Canon 24-70mm F2.8 II Lens, and it also worked great from around 50mm to 70mm range.Anything wider than 50mm doesn't work well as you will be to close to your subject to photograph macro work.Just for kicks i tested the ultra wide Canon 10-22mm EF-S lense mounted with this Canon Extension Tube EF 25 II on my full frame Canon 5ds body and found the lens electronics functions but it hunts for focusing and can't focus... Focusing was focused on the inside or the lens glass internally.Well there you have it. Awesome product and does what it was intended to do.... Macro photography 😍 !!!!!!!

Can extension tubes be tricky to work with? Absolutely. However, the electronic pass-through and sturdy build quality of the EF-25 II really help to make things a lot more manageable than cheaper "dumb" extension tubes. With the EF-25 II you get focus confirmation (when manually focusing), all of your EXIF data is correct, and auto focus functionality is even preserved...mostly (works better with some lenses than others and effectiveness also depends on the focal length you've selected... manual focus is still the better option in most situations, though).This adapter has really made my small lens collection a lot more versatile, but it does have some limitations. For example: it's super useful on my Tamron SP 70-200mm f/2.8 DI VC USD lens and Canon EFS 18-135mm IS STM, but not nearly as useful on my Tamron 24-70mm and completely useless on my Tokina 11-16mm. Why? Well, because once you drop the focal length below about 50mm or so, it becomes impossible to focus on anything (your subject will hit your lens' front element before you'll be able to get close enough to focus, as the focal range is pushed to somewhere inside of the lens body).

One credit I give Canon with this is the construction, it feels solid and precise, obviously not a third-party knockoff. That's worth extra $$ to me, but for a ring with a hole, 144 bucks? For that price I'd better be able to do some decent macro work!The good news is, this thing works better than I thought. I use a 50mm/1.2 on a 5D Mark III and I cannot get closer than a foot or so to an object before I run out of focus when using just the lens. With this ring added on, I can get right on top of something, even an inch away and still get it in focus. That was my biggest concern and now I'm thrilled. For bug eyes you have to get too close to the object which would scare the bug away, so next I'll try this on my 70-200 and see how that works (out on loan to a friend at the moment). I'll update after I try that.I posted a pic that shows both the regular 50mm at closest focus, and the same shot with the EF25 tube added. Look for the image from "PD".Great unit, 4 solid stars. If Canon knocks it down to $99.95 where it belongs, it'll become 5 stars.

I rated this item 5 stars because it performs exactly like it should and the build quality is excellent. After using it for a while, I have found that it is best to set the camera to manual focus and move forwards or backwards to focus. With this being the case, it may make more sense to consider a third party extension tube at a lower cost as there are no optics to affect image quality. Overall this works perfect. I primarily use it with my 135mm F/2L lens. You will be able to focus much closer to objects, but you do lose the ability to focus at farther distances.

I got this product to try it out on my assortment of Canon lenses. It does what it promises to do and it is a quality built item. But because I already own a 60mm macro and a 100mm macro lens, this was rather redundant. So reluctantly, I did send it back. Some have commented on its price. Well, my view on that subject is... yes, sometimes you get what you pay for. Being the owner of both consumer grade Canon lenses and those much more expensive "L" grade of Canon lenses, I know that the Canon brand does come at a "price". But I'm the type of buyer that is willing to spend the extra buck. And in this case I do believe in that old saying.