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I have to apply the crop factor 1.5 to apertures in my lens?
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May 7, 2015 19:14:17   #
CaptainC Loc: Colorado, south of Denver
 
jlrivera wrote:
Is there a difference in light-gathering capabilities between APS-C sensors and full-size sensors?


About the same as between your left eye and right eye. Maybe less. :-)

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May 7, 2015 19:15:06   #
JPL
 
jlrivera wrote:
If you go to the 1 page and read my 2 message, I'm referring to Tony Northurp video. Not everybody agrees with him :shock:


It is not about if someone agrees with Tony Northurp or not. The main thing here is about if he is right or wrong. And he is wrong and the whole idea should be ignored by people who "know" anything about photography. Publishing bullshit on Youtube does not make truth of it.

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May 7, 2015 19:27:41   #
47greyfox Loc: on the edge of the Colorado front range
 
mcveed wrote:
People just love to beat up on Tony Northrup. He deserves a lot of it because he doesn't explain himself very well. What he was trying to say is that you have to multiply the crop factor by the focal length - and - you have to multiply the crop factor by the aperture when determining what depth of field you will get. Example: a 50mm f1.8 lens used on a 1.5 crop factor camera will give the field of view of a 75mm lens and the depth of field of a 75mm f2.7 lens. And he demonstrates this quite well in another video. He also makes it clear in the other video that this does not affect the exposure calculations.
People just love to beat up on Tony Northrup. He d... (show quote)


:thumbup:

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May 7, 2015 21:58:31   #
rocketride Loc: Upstate NY
 
JPL wrote:
Not everything on youtube is true.


No, it didn't become an f/4.2 lens.

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May 7, 2015 21:59:26   #
rocketride Loc: Upstate NY
 
47greyfox wrote:
:thumbup:


Maybe he should have said that in that one. . .

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May 7, 2015 22:50:08   #
cmikal
 
https://photographylife.com/sensor-crop-factors-and-equivalence

http://www.dpreview.com/articles/2666934640/what-is-equivalence-and-why-should-i-care

http://admiringlight.com/blog/full-frame-equivalence-and-why-it-doesnt-matter/

Page 2 of the last link above is the meat of this whole discussion for me. It explains why non of this matters.

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May 8, 2015 09:40:49   #
Marionsho Loc: Kansas
 
cmikal wrote:
https://photographylife.com/sensor-crop-factors-and-equivalence

http://www.dpreview.com/articles/2666934640/what-is-equivalence-and-why-should-i-care

http://admiringlight.com/blog/full-frame-equivalence-and-why-it-doesnt-matter/

Page 2 of the last link above is the meat of this whole discussion for me. It explains why non of this matters.


Thanks cmikal, for that very interesting and informative article.
Marion

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