EFS 18 - 55 IS (image stability) Lens -- Friend or Foe? - Page 2

yeehaanow · 09-23-2011, 05:01 PM

Not really, because most of those lenses will not cover a full frame anyway, so effectively they are being used right to the edges. The only one that does, to my knowledge is the 16-35L. The canon 10-20 and sigma are all crop frame lenses.

R_Lefebvre · 09-24-2011, 08:08 AM

Really? What is the crop factor on them? When used on a full-frame camera with the crop worked in, does a 10mm actually look like a 10, or more?

Kind of annoying because, I've got the cheapy 55mm Canon prime lens, but on my camera, it's like an 88mm which makes it harder to use, especially indoors.

yeehaanow · 09-24-2011, 11:19 AM

They're still rated the same way. 10mm is 10mm, which on the APS-C is 'like' a 16mm on a full frame. Consequently, a crop-frame lens will vignette on a full frame chip.

It is annoying sometimes, but I think full-frame would annoy me now, because aps-c closely resembles a 35mm motion picture cam, and to know what a 50mm is like on a cinema camera is more helpful to me.

I have never flown with a 5D but I bet it's much better for AP/AV because you can get a wider view without needing a super wide lens.

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09-23-2011, 05:01 PM	#21
yeehaanow Registered Users Join Date: Sep 2004 Location: Vermont	Not really, because most of those lenses will not cover a full frame anyway, so effectively they are being used right to the edges. The only one that does, to my knowledge is the 16-35L. The canon 10-20 and sigma are all crop frame lenses.

09-24-2011, 08:08 AM	#22
R_Lefebvre Registered Users Join Date: Nov 2010 Location: Canada	Really? What is the crop factor on them? When used on a full-frame camera with the crop worked in, does a 10mm actually look like a 10, or more? Kind of annoying because, I've got the cheapy 55mm Canon prime lens, but on my camera, it's like an 88mm which makes it harder to use, especially indoors.

09-24-2011, 11:19 AM	#23
yeehaanow Registered Users Join Date: Sep 2004 Location: Vermont	They're still rated the same way. 10mm is 10mm, which on the APS-C is 'like' a 16mm on a full frame. Consequently, a crop-frame lens will vignette on a full frame chip. It is annoying sometimes, but I think full-frame would annoy me now, because aps-c closely resembles a 35mm motion picture cam, and to know what a 50mm is like on a cinema camera is more helpful to me. I have never flown with a 5D but I bet it's much better for AP/AV because you can get a wider view without needing a super wide lens.