A few snaps with Sony FE 70-200mm f4 and a6000

Started Jun 16, 2014 | Discussions thread
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dmanthree Veteran Member • Posts: 5,897
Re: A few snaps with Sony FE 70-200mm f4 and a6000

clail wrote:


Uh.....no. F2.8 is f2.8, as far as light gathering ability goes. Depth of field is different, yes. But 2.8 is 2.8 when it comes to exposure calculations, so I compare the 35-100 2.8 to anyone's 70-200 2.8. If I wanted to compare slow lenses, I'd compare the Panny 40-150, which is the closest to compare, until Pannys new 35-100 is released later this year. It's designed to compliment the GM1, and it's really, really tiny.

m4/3 lenses are smaller, of that there is no doubt.

Only correct in terms of ISO but ISO is based on sensor size. Please watch this YouTube video to understand this.

http://youtu.be/DtDotqLx6nA

I do understand it. And what I said is true, according to the friendly guy in the video. f2.8 is f2.8. Yes, sensor size affects many things, but not the aperture.

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