the last word

A couple of weeks ago, I looked at the dynamic range effects of Sony’s 12-bit shutter modes.  Then someone asked about the visual effects of Nikon’s 12-bit raw mode. I did a visual test. For some, that’s enough. If you’re one of those, move along; nothing to see here. Still around? I’m a numbers guy,… [Read More]

Here are some panos I’ve done with the IR-modified a7 and the 28mm f/1.4 Nikkor-D. I’m getting a little looser with my framing. I ‘ve been playing with combining handheld HDR with stitching. AutoPano Giga will do the exposure blending and the stitching at the same time. It works well if there’s no wind. The… [Read More]

The Really Right Stuff L-bracket for the alpha 7 Mk II arrived this afternoon. It’s quite a bit different form the a7 piece. The vertical piece ends with an open top to clear the door on the side of the camera, apparently for weight savings. The D-ring for hand tightening the 1/4-20 screw is gone, replaced… [Read More]

On Tuesday there was a light cloud cover, with the sun just barely casting shadows. Perfect weather for what I had in mind:   Sony alpha 7, modified for infrared by LifePixel with a “super color” filter. Nikon 28mm f/1.4 Nikkor-D lens. Hand held. Stitched with AutoPano Giga.

We looked at the overall image and the upper right corner here. Now, let’s take a look at some crops from near the center of the two sets of images. The Summilux is clearly resolving better. The MTF charts told us that it would. The diffuse flare of the Nikkor softens the image. The color… [Read More]