new Sigma 120-300 f/2.8 again? But now with weather sealing for sports?

Started Jan 7, 2013 | Discussions thread
joger
OP joger Veteran Member • Posts: 4,679
Re: It is 2.8, sorry!

MICHAEL_61 wrote:

. . . I set the camera to manual and RAW and made 3 shots of the same object with 120-300 at120mm and at 300mm set to 2.8 and - to compare - with a current Canon L lens set to 2.8, using the same shutter speed for all 3 test shots. All 3 shots look exactly the same in terms of exposure

since you don't mention which Canon f/2.8 lens you've used a very quick T-stops

70-200 f72.8 II L IS USM e.g. has T/3.4

1/3 stop or 1/2 stop is a very close if you're not shooting the very same moment from two two bodies.

Easy - let's wait until some trustable technology side tests the 120-300 T-stop

I am sure I am not too wrong - what is your agenda - mine is ultimate quality

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