Phase One just introduced an update to the IQ4 cameras that allows in-camera capture and averaging of groups of images. If the camera position is fixed, this technique can have the effect of simultaneously: Allowing long exposure times without the need for a neutral density filter. Deceasing the amount of noise in the final image… [Read More]

I recently had an interesting discussion about raw precision and dithering with a person who works for a high-end camera retailer. We kept talking past each other. I’d start talking about read noise and the various studies – including my own – that attempted to quantify how much dither is adequate. He’d say that 16-bit… [Read More]

The format rhetoric seems to be heating up again. Maybe it never cooled off. In the last 7 or 8 years, I’ve owned and made many images with APS-C (with crop factors between 1.3 and 1.5), full frame (FF), and 33×44 (MF, or crop MF, depending on your level of precision – and maybe your… [Read More]

Back in the 80’s, I subscribed to a dead-trees publication that listed the particulars of most of the open calls-to-entry for exhibitions. I wrote letters, received forms, sent in slides, received acceptances, packaged prints in reusable shipping containers, sent them off, felt good about awards, received the prints back, unpacked them, dealt with damage, rinsed,… [Read More]

I got tired of the straight edges in the images using the image-stacking code that I’m been writing. Here is the result of the application of some trigonometry to the workflow.