DOF and Cropping take 2

Started Feb 11, 2014 | Discussions thread
awaldram Forum Pro • Posts: 13,214
Re: DOF and Cropping take 2

MightyMike wrote:

awaldram wrote:

Are you now admiting you were talking rubbish and f2.8 on mf,ff,aps-c or indeed Q will not effect exposure ?

Just a little niggle... The exposure can be very different as the FOV of the area being projected onto the sensor or metering device can vary greatly, a 40mm lens at F2.8 on a 5.5x crop factor Q and a 40mm lens at F2.8 on an APS-C when shot from the same distance can have significantly different exposures as the scene can be quite different than a part of the scene.

Give you that , maybe I should add against a flat 18% grey target

and that to say f2.8 = f2.8 is not crazy but correct.?

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Mike from Canada
"I am not a great photographer! God is a great creator! All I do is capture His creation with the tools He has provided me."
'I like to think so far outside the box that it would require a telephoto lens just to see the box!' ~ 'My Quote :)'

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