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Chuya Moua
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p.1 #1 · Do you lost any f/stop on a lens if shooting a crop sensor?

Anyone out there can help me understand whether will I loss any f/stop on a lens shooting crop sensor vs. full frame sensor? Thank you.

May 05, 2008 at 03:43 PM

Evan Baines
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p.1 #2 · Do you lost any f/stop on a lens if shooting a crop sensor?

No, you won't lose an F-stop.

May 05, 2008 at 03:44 PM

bacilonur
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p.1 #3 · Do you lost any f/stop on a lens if shooting a crop sensor?

Nope. But you lose an f-stop of bokeh.

May 05, 2008 at 05:00 PM

cordellwillis
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p.1 #4 · Do you lost any f/stop on a lens if shooting a crop sensor?

bacilonur wrote:
Nope. But you lose an f-stop of bokeh.

+1

2.8 is 2.8 regardless. However, 2.8 on a crop *looks* more like 4+/- in terms of bokeh instead of 2.8 on FF

Edited on May 05, 2008 at 05:48 PM

May 05, 2008 at 05:47 PM

Chuya Moua
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p.1 #5 · Do you lost any f/stop on a lens if shooting a crop sensor?

Thank you very much.

May 05, 2008 at 07:59 PM

ChrisDM
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p.1 #6 · Do you lost any f/stop on a lens if shooting a crop sensor?

Yes, just to confirm and clarify: Exposures do not change going from full frame to crop, but depth of field at any given aperture and focal length will be a little greater on a crop sensor. Not by much, but something to note.

Chris M
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May 06, 2008 at 12:08 AM

JLim
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p.1 #7 · Do you lost any f/stop on a lens if shooting a crop sensor?

does 2.8 on crop really look like 4.0 on full?

i'm probably wrong, but to me it seemed like 40D+24L at 1.4 looked like 5D+50L at 2.8. that's 2 full stop of difference in dof.

i donno. maybe my eyes are messed up.

May 11, 2008 at 06:31 AM

Mike Mahoney
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p.1 #8 · Do you lost any f/stop on a lens if shooting a crop sensor?

JLim wrote:
does 2.8 on crop really look like 4.0 on full?

i'm probably wrong, but to me it seemed like 40D+24L at 1.4 looked like 5D+50L at 2.8. that's 2 full stop of difference in dof.

i donno. maybe my eyes are messed up.

You're adding different focal lengths into the mix here. And giving the longer focal length to the bigger sensor. So in your example here the bokeh may well look like 2 stops different.

May 11, 2008 at 01:03 PM


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