The Sony a7CR is a high-resolution addition to the company's compact full-frame a7C series. So what did we make of it and where does it leave the a7 IV that it sits just above?
MFD lenses - new designs vs. old designs
Hi,
One thing I noted is that lenses for the new 44x33 mm cameras tend to be more complex compared to older designs.
Just for the fun of it, I looked at Hasselblad's lens data for the 100/2.2 HC lens and the 90/3.2 XD lens.
The HC 100/2.2 is a quiet simple design that is not so great at full aperture, but improves significantly at f/5.6.
The 90/3.2 for the X1D is a much more complex design and it seems that it yields near optimal performance fully open.
Having a smaller sensor makes larger demands on the lens.
Fuji's lenses are even more complex, but some of that complexity may depend on Wibration Reduction (WR) using an additional group.
I prefer Hasselblad's data, as they present MTF data which is measured on lens sample, while I think Fuji's MTF data is calculated. So, comparing Fuji's and Hasselblad's MTF data is no really possible.
Best regards
Erik
Erik Kaffehr
Website: http://echophoto.dnsalias.net
Magic uses to disappear in controlled experiments…
Gallery: http://echophoto.smugmug.com
Articles: http://echophoto.dnsalias.net/ekr/index.php/photoarticles
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