Image quality Q

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Image quality Q

MrB
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Posts: 1,246
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#8

Nov 9, 2014, 11:18

I think Canon usually have a 1.6x crop factor, so multiply by 1.6. Therefore, you would need a 640mm lens on a full-frame camera to give the same field of view you see with a 400mm on the 650D. I don't know Canon mounts but, even if your 400mm would fit, whether it would work depends on the image circle produced by your lens - if it is designed for your size camera (APS-C) it will probably vignette (produce very dark corners) on full-frame.

Cheers.
Philip

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Messages In This Thread

Image quality Q - by johnytrout - Nov 9, 2014, 05:00

RE: Image quality Q - by MrB - Nov 9, 2014, 06:34

RE: Image quality Q - by johnytrout - Nov 9, 2014, 07:07

RE: Image quality Q - by MrB - Nov 9, 2014, 08:59

RE: Image quality Q - by johnytrout - Nov 9, 2014, 09:13

RE: Image quality Q - by johnytrout - Nov 9, 2014, 09:21

RE: Image quality Q - by EdMak - Nov 9, 2014, 08:12

RE: Image quality Q - by MrB - Nov 9, 2014, 11:18

RE: Image quality Q - by Phil J - Nov 10, 2014, 07:27

RE: Image quality Q - by Rocketian - Nov 10, 2014, 11:07

RE: Image quality Q - by johnytrout - Nov 10, 2014, 11:39

RE: Image quality Q - by Rocketian - Nov 10, 2014, 12:45

RE: Image quality Q - by MrB - Nov 10, 2014, 18:52

RE: Image quality Q - by johnytrout - Nov 11, 2014, 00:46

RE: Image quality Q - by MrB - Nov 11, 2014, 05:50

RE: Image quality Q - by johnytrout - Nov 13, 2014, 12:45

RE: Image quality Q - by MrB - Nov 13, 2014, 13:36

RE: Image quality Q - by dave1712 - Nov 23, 2014, 05:36

RE: Image quality Q - by EdMak - Nov 23, 2014, 07:12

RE: Image quality Q - by dave1712 - Nov 23, 2014, 14:46

RE: Image quality Q - by EdMak - Nov 23, 2014, 15:34

RE: Image quality Q - by johnytrout - Nov 23, 2014, 16:38

RE: Image quality Q - by EdMak - Nov 24, 2014, 08:00

RE: Image quality Q - by dave1712 - Nov 24, 2014, 08:38

RE: Image quality Q - by EdMak - Nov 24, 2014, 14:03

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