View single post by jk
 Posted: Wed Jun 26th, 2019 17:28
jk



Joined: Mon Apr 2nd, 2012
Location: Carthew, Cornwall, United Kingdom
Posts: 6874
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This lens specification is produced by several manufacturers e.g. Nikon, Fuji, but also by independent lens manufacturers.  
I wonder how generic the design is and that everyone seems to want to have a super-fast manual focus lens at 50-58mm f0.95 

Reality check.
Most digital cameras in the last 2-5 years can reach ISO3200/6400 easily with less graininess (colour noise) than a camera produced ~10 years ago e.g. Nikon D3.
f0.95 is only one and one third stop faster than f1.4!

So the same as using ISO80 (with f0.95) rather than ISO200 (for a f1.4 lens) there is diminishing returns as the ISO is raised above ISO800/1600 as other factors start to play.



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