I went back to the firehouse yesterday to see if my new shoot-from-the-side plan would survive contact with the enemy. Last night I processed the images, and there were a few surprises. The first was that I was losing more than 8% of the vertical pixels to the perspective correction in Lightroom. I thought about… [Read More]
Testing shift vs skew
I taped an Imatest SFRPlus target to a mirror, and shot it straight on with the a7R and the Zeiss 55mm f.1.4 Apo Distagon at f/5.6, f/8, and f/11. ISO 100. Thanks to an ND filter, exposure times were 4, 8, and 16 seconds. Then I moved far enough to the side so that I… [Read More]
Shift vs skew
One of the many technical problems in the Firehouse pictures is the control of reflections, specifically those of the camera and tripod. There aren’t any of me because I’m using a self-timer and getting out of range before it goes off. I can deal with the reflections in the highly convex shiny bits in Photoshop,… [Read More]
Back to the firehouse
After an extensive technical detour that will be familiar to regular readers, yesterday I started back on the Firehouse pictures. I took three cameras, the a7 (for handholding) the a7R, the D800E, and four lenses, the Zony 55 (on the a7), the Zeiss 135mm Apo Sonnar, the Zeiss 55mm Apo Distagon, and the Coastal Optics… [Read More]
a7 & a7R firmware upgrade
On Wednesday, Sony posted new firmware for the alpha 7 and the alpha 7R. The Internet immediately echoed with tales of bricked cameras. I waited a day, and upgraded both an a7 and an a7R with no troubles. I think all the upgrade sturm-und-drang was the result of an unforced error on Sony’s part. Most… [Read More]
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