Corner sharpness: Four Thirds vs 35mm (bandwidth warning)

Started Oct 27, 2007 | Discussions thread
Amin Sabet
OP Amin Sabet Veteran Member • Posts: 6,763
Re: FF corner test using my primes

Ominous wrote:

I lack any wider prime lenses, plan on adding a 35 and 24 before too
long (sold a 24 a while back and miss having a wide prime). I'll
have to try my 16-35, but I need to find a target that is large
enough, flat enough, and that I can light evenly, to test.

Yes, my normal and tele lenses have always had sharp corners when stopped down on the 5D. The most common knock on the Canon 35mm system is the lack of sharp corners on wide angle lenses. They designed the 16-35 II and 14 II in large part to beat this rap. They have in part succeeded. Some nice work evaluating wide angle lenses for the Canon 35mm system has been done here -> . You may have seen it. If not, check it out. You'll be happy to see that Mark used a tripod for each test ;).

As for your future testing of wide primes, I'm personally not so interested in seeing flat near targets. Many lenses behave differently on close targets than far ones, and for this application, it's generally the far ones that count. Of course that's just my preference.

 Amin Sabet's gear list:Amin Sabet's gear list
Nikon D500 Panasonic Lumix DMC-GX85 Sony a9 Panasonic Lumix G 14mm F2.5 ASPH Panasonic 20mm F1.7 II +11 more
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