Is this lens a EF or a EFS.

It is EF-S. I bought it for a full-frame camera because the description said EF. I am returning it.

Will this lens work on my Nikon D300s

Thanks for your interest in this lens. As per Sigma this lens was designed specifically for use with Nikon digital SLR cameras with an APS-C size image sensor, including:D300sD3100D3200D3300D5100D5200D5300D5500D7000D7100D7200

sigma 18-250 vs 18-300, how do these lenses compare?

I do not have personal experience with 18-250 sigma lenses, but there are two of them, one released in 2009 and the other in 2012. The later one is slightly better overall and in sharpness, but both are quite similar to the 18-300, though the latter has greater reach in telephoto range. In my experience, the 18-300 loses a little sharpness at 300mm, so I usually shoot it pulled back a small amount from that.

Does this lens have full time manual focus?

No. By "full time manual focus" I think you want to know whether or not you can adjust the focus while leaving the lens in autofocus mode. You cannot.

Package Dimensions L x W x H	20.6 x 15.9 x 15.9 centimetres
Package Weight	0.85 Kilograms
Product Dimensions L x W x H	10.1 x 7.9 x 7.9 centimetres
Item Weight	1.29 Pounds
Brand	Sigma
Camera Lens	18-300mm F3.5-6.3 Macro lens
Colour	black
Has image stabilisation	Yes
Included components	18-300mm F3.5-6.3 DC Macro OS HSM Lens, Lens Hood, Front Cap, Back Cap, Instruction Manual, 1 Year Warranty Card
Lens Fixed Focal Length	300 Millimetres
Max Focal Length	300 Millimetres
Min Focal Length	18 Millimetres
Model year	2014
Objective Lens Diameter	72 Millimetres
Part number	886101
Water Resistance Level	Not Water Resistant
Zoom Type	zoom
Lens Design	Zoom
Focus type	AF/MF
Aperture Modes	F3.5-F6.3
Style	Lens
Photo Filter Thread Size	72 Millimetres
Guaranteed software updates until	unknown

Sigma 886101 18-300mm F3.5-6.3 DC Macro OS HSM Lens for Canon

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Description

Specifications

Common Questions