Christopher's PhotoSketchPad

I swore I'd never ever own another Carl Zeiss Jena Tessar 50mm f/2.8 (nor a f/3.5 for that matter).   In my hands they've never ever...

As a placeholder to a longer conversation... Leica Thread Mount lenses (m39 LTM) ~ m39 - 39mm diameter by 1mm thread FFD of 28.8mm precisely...

On lens "corrections" - While researching a lens I was interested in I stumbled across a comment that struck me.  It went somethin...

I wanted to write a little about what I'm experiencing using lenses from a former German manufacturer.  C. A. Steinheil Söhne Optical an...

On a lark I purchased a ridiculously cheap Viltrox 28mm f/4.5 FE.   What I found can be summed up in the following two sections.  Pros ~ Ver...

Similar to my wondering about lens histories for sharp lenses, I wondered when soft focus came into being.     Sony A7RII + Steinheil 45mm f...

Over the winter I wondered what the history of lens development for photography might look like.  While there are many many variations on th...