I’ve had some e-mail correspondence that suggests something about the Epson inkjet hardware and software: That Epson has, in my words, dumbed down the traditional error diffusion dither algorithm so that it can’t represent detail finer than 720 pixels per inch at 2880 DPI resolution, or finer than 360 pixels per inch at 1440 DPI… [Read More]
Diffraction, DOF, and digitization in ideal lenses
In response to some e-mail comments about my anti aliasing posts, I’ve been thinking about diffraction, and how it affects format selection. In order to clarify my thinking, I prepared the following spreadsheet: In the first column is the f/ stop. The second column is the horizontal or vertical pixel spacing in micrometers of a… [Read More]
Antialiasing, part 4
Antialiasing the future It’s pretty clear to me that the biggest aliasing problems today are caused by the Bayer pattern and similar methods that construct a color sensor by detecting different spectra at different places on the chip. One way to make a big improvement would be to get all the RGB photosensitive regions that… [Read More]
Printers, revisited
Printers, revisited Usually, we do a holiday newsletter, for which I am the designer, editor, and printer. This year, Betty suggested that I take one of my composite photographs and put it on the front of a more conventional card. I was flattered. It wasn’t easy to find a picture appropriate to a greeting card… [Read More]
Selling prints by the square inch
Selling prints by the square inch As I grow older, rather than becoming more set in my photographic ways, I seem to be developing an urge to kick over the apple cart. I’ve already written about displaying works without overmats. The reaction to my doing that has been highly bimodal. Many people don’t notice. Of… [Read More]
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