Yesterday, I received a nice e-mail: Congratulations! Your entry in the COLOR Single Image Contest 2011 has been selected for a Bronze Award, which means that one of your images will be published in the Special Issue #13 of COLOR magazine scheduled to arrive on newsstands early March. There are only 15 winners in this… [Read More]
Inkjet printing on Epson, part 1
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]
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