GFX 100S test of ISO range

Just when I thought I might be done with my tripod, I started wondering about the usable range of ISO on this camera. Like my other tests this is done mostly for my own benefit, so that I know the constraints I'm working with. 

Everyone has different tolerance to noise but most photographers would prefer it to be as low as possible. Adding film-like grain is a different matter since this has quite a different look from sensor noise. The aesthetic appeal can be gauged by the number of software applications just waiting to add grain to your shots. 

You can read my previous post for my testing method. Let's see how this camera performs!

Vintage lenses tested on GFX 100S

Recently I tested two Fujifilm lenses on the GFX 100S. Since I can't afford a full fleet of native glass my plan is to use my modest collection of fine vintage (manual focus) glass. I have been happy to use a selection of these on the full-frame (135 format) Panasonic S5. But not all of these lenses will support the larger sensor size. I expect some vignetting, especially wide open. Or the borders could simply be too weak (e.g. blurry with aberrations).

So... bring on the testing! I lined up a selection of Contax-Yashica mount Carl Zeiss lenses, namely:

• Carl Zeiss Distagon T* 2,8/28
• Carl Zeiss Planar T* 1,4/50
• Carl Zeiss Makro Planar T* 2,8/60 C 
• Carl Zeiss Sonnar T* 2,8/85
• Carl Zeiss Planar T* 2/100

And a few M42 screw mount lenses:

• Carl Zeiss Jena DDR Pancolar auto 1,8/50 MC
• Meyer-Optik Gorlitz Domiplan 2.8/50
• Pentacon 2.8/135

Pentax will have to wait since the adapter I purchased is apparently on a world tour.