I’ve been a photographer since high school, and an electrical engineer all of my professional life. The two things came together for a while. From 1989 until the middle of 1995, I worked as an IBM Fellow at the Almaden Research laboratory south of San Jose, CA. For those six years, my principal area of research was color management, color processing for digital photography, and color transformations such as gamut mapping. At other times in my career, I researched speech recognition and speech bandwidth compression and developed data acquisition and process control computer systems, telephone switching systems, and data communication systems.
I retired in 2000, and for the last 22 years when I’m not serving on NFP boards unrelated to photography, I’ve been spending most of my free time making photographs.
Geek Articles
I’ve had a Fujifilm 30mm GF f/5.6 tilt/shift lens on loan from Lensrentals for about three weeks, and I’ve done the basic testing. I had hoped to get some time using the lens the way it was intended, but testing this complex lens turned out to take all the time I’d allotted to the task. […]
Resolution Tests
This post is of interest to any user of a mirrorless interchangeable lens camera (MILC). I’ve illustrated it with images from the Fujifilm GFX 100. Here’s the Cliff Notes version: Use as much magnification as you can subject to 2, below Use a low peaking sensitivity to produce visible peaking at the chosen magnification. The […]
Equipment
I get asked this question a lot; so often, I will write a general response. This doesn’t replace the personalized advice that I have given and will continue to give, but it will add to it. For whom is this article intended? I’m thinking of someone who already owns an interchangeable lens full frame (FF, […]
Recommendations
This is an outstanding lens. I’ve worked with f/0.95 lenses before, and they’ve all been severely optically compromised. You can’t say that about the Nikon 58mm f/.95 Noct. It’s sharp across the frame wide open, and amazingly so stopped down to f/1.4. It has few aberrations by any standard, and amazingly few for such a […]
Equipment
The Hasselblad XCD 135/2.8 is one of the first batch of lenses for the Hasselblad X1D and X2D (X mount) cameras. It is usually sold bundled with a matched 1.7x teleconverter (TC) and a tripod collar that attaches to the TC. Except for the focusing ring, the lens is completely devoid of controls – the […]
