October 20, 2014, 11:49:08 PM

Author Topic: Exposing to the left?  (Read 6438 times)

bdunbar79

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Re: Exposing to the left?
« Reply #30 on: February 25, 2013, 09:24:57 AM »
Yes I left the same lens on and just swapped bodies.
2 x 1DX
Big Ten, GLIAC, NCAC

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Re: Exposing to the left?
« Reply #30 on: February 25, 2013, 09:24:57 AM »

TrumpetPower!

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Re: Exposing to the left?
« Reply #31 on: February 25, 2013, 04:08:11 PM »
Yes I left the same lens on and just swapped bodies.

Poifect!

So...got any files? Are we there yet? Are we there yet?

b&

sanj

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Re: Exposing to the left?
« Reply #32 on: March 13, 2013, 05:26:26 AM »
Thank you all for your replies... Am back from safari and will reply individually.... THANK YOU

GMCPhotographics

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Re: Exposing to the left?
« Reply #33 on: March 13, 2013, 09:35:38 AM »

This is a very good point. It's why lenses are calibrated in T-stops rather than F-stops over in the cinema world.
Cheers,

b&

Do you know of a web site which charts the T-Stop values for Canon lenses? Do they chart zooms across their focal length too? Most constant aperture zooms are not fixed T-Stop zooms. A lens T-Stop value can also change according to how close it's focussed. I've yet to see a review site which comprehensively tests this criterior. DXO mark seems to have a single T Stop value per lens, which is useful for a prime but not very usefull for a zoom....a 24-70 f2.8 L will need testing at 24mm and 70mm and probably every major focal point in between.

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Re: Exposing to the left?
« Reply #33 on: March 13, 2013, 09:35:38 AM »