Thread: What is this weird hatred of different focal lengths?
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Old September 11th 12, 05:04 AM posted to rec.photo.digital.slr-systems
Floyd L. Davidson
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Posts: 5,138
Default What is this weird hatred of different focal lengths?
wrote:
On Mon, 10 Sep 2012 09:59:23 +1000, "Trevor" wrote:


wrote in message
. ..
On Sun, 9 Sep 2012 13:51:59 -0700 (PDT), RichA
wrote:
On Sep 9, 1:43 pm, David Dyer-Bennet wrote:
"Trevor" writes:
Which is all rather amusing when you consider the more serious
photographers
used an 85mm lens and a 35mm lens combination far more often than
anything
in the 40-70mm range. If anything a 58 mm lens was a little better for
portraits than a 50mm one at least, even if not by much. A fast 50mm
is a
much better lens now on a non FF sensor DSLR however IMO.

A 58mm is great on a 1.5X DSLR for portraits :-)

That was my point.


But does it behave the same way as say an 85mm on a FF for the same
subject matter?


The 85mm lens bends the light rays less than the 58mm lens does, that
might make
a differance... you need to try it!

Since you are only using the centre part of the focus plane on a non FF
sensor, the "bend" should be the same for the area used.

Trevor.


No matter what sensor you have, an 85mm focal length lens bends light at less of
an angle than a 58mm lens.

Not to cover a smaller sensor it doesn't.

--
Floyd L. Davidson http://www.apaflo.com/
Ukpeagvik (Barrow, Alaska)