Help: what 20mm or less for A7 (slow, sharp and cheap)?

Started 5 months ago | Discussions thread
viking79
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Re: Help: what 20mm or less for A7 (slow, sharp and cheap)?
In reply to darkdirtydwarf, 5 months ago

darkdirtydwarf wrote:

Hi Tim, thanks for the input!
As far as I can see, MK I and II have the same optical formula, the updates are minor, so MK I should perform similarly (and I prefer the smaller size). I need to use it stopped down, with a bit of luck it'll perform well enough.

Once I get it I'll compare it to my Sigma 8-16 and post the results.

Most legacy 20mm lenses (zoom or otherwise) will have a lot of field curvature.  Focus a bit out from the center to get better corner performance.

I use a Canon 20mm f/2.8 and think it is fine at f/8 or something, as long as you balance focus between edges and center.

Eric

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