EF & RF Lenses
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Adapter for my lens

Hi folks.First fo all, I'm Italian so do not pay attention to my bad english Just want to ask you, how (and if) can I adapt this lens ---> Sony 18-70mm f/3.5 (it's from a SONY A100 dslr)to my EOS 1200d ? this lens have the "type A" (alpha), and I thi...

Resolved! lens same after repair

I recently purchased a refurbished rebel t5 with the 18-55mm kit lens, as well as the 55-250 IS and 10-18mm IS lens. Everything has been fine with all my equipment except for the 18-55mm lens. When turning the lens to zoom in or out, there was a noti...

Resolved! Distance Index & Scale on 100mm f/2.8L

When manually focusing the EF 100mm f/2.8L IS USM macro lens (or any lens, for that matter), is best practice to align the distance index | with the periods on the distance scale (e.g. 0.30 m) or with the magnification ratios' central colons (e.g. 1:...

lwalker by Apprentice
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Sharpness issues with 16-35mm lens

I am using 16-35mm 1:2.8 Canon EF lens. Being wide angle I have noticed the far left and right sides of the images are not sharp. Using auto focus around F11. Does anyone have an explanation. 

Richard3 by Apprentice
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  • 14 replies
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Just got a Canon 100mm IS L macro. Now what?

It is winter so bugs are in short supply. I have a good tripod. I have only played a bit with it but it has fantastic bokeh for my girls' birthday cake in front of our Christmas tree.  :).  Any my suggestions on how to dive in? 

ScottyP by Authority
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  • 33 replies
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Resolved! Is there an aperture difference between lenses?

Happy Holidays. I've been thinking too much again.  Let me start with what is probably a false assumption.  Suppose I have a lens that uses a 58mm filter, and another that uses a 77mm filter.  For argument's sake, I'm assuming that the lens elements ...

Two extremes?

Shot these the other day with a Sigma 150-500mm f/5-6.3 APO DG OS HSM Lens on my Caon EOS 1D Mk IIn.  This lens and camera have been discontinued but both can be found on the used market at steep discounts.  Everybody knows the ruggedness of build in...

_K2N6531.jpg _K2N6534-Pano-Edit.jpg
ebiggs1 by Legend
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Resolved! 200 - 400mm zoom

Does the built-in 1.4x extender make the lens 280 - 560mm or is the extender to get the 200-400?  Thanks.

Bower 500mm fixed lens NO AF.

I have a Canon 6D and my husband got me a 500 mm fixed lens. No autofocus and I want to know what would be the best settings for moon shots. In particular quarter or half moon. I get some good ones and then I get some that are too bright if I use the...

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