Krylon Ultra-Flat Black (was Re: matte black paint pen)
So I wrote down Krylon Ultra-Flat Black from Richard's posting on my notepad and went to a hardware store down the street. It's really surprising they had it. I live in the city so I usually get anything generic but when it comes to anything specific, unless it's an icecream brand, I usually have to drive 30 minutes to go to a big store in suburb or mail order. For example, you can't buy the kind of toilet paper that's nice to your (or anyone's) ass, so you'd Amazon TP. Anyway, they had Krylon Ultra Flat Black in spray and quart. This paint is a good deal less reflective black than other black paints I tried, but it looks reflective until it dries out completely. It seems to require quite a bit more time than the advertised drying time in open air drying to get minimum reflection. I still see reflection from the treated surface, but at least it's a bit dimmer and less specular. Let's see whether this really improves the picture. If it doesn't, I may have to go to the next step to order optical quality antireflection paint. If someone needs good paint for pinhole camera or more serious homemade LF cameras, I think this paint is perfectly usable for anything away from main light path. It's probably usable for lens hood, etc., before the optics. These examples are probably along the line of Richard's suggestion. However, my case is tricky because the reflection is caused well within the coverage of the lens. Incidentally, in Horizon Perfekt, the reflection is made by blunt edges of thick (about 1.5mm) plastic pieces used to make the slit shutter. I think they should've made many fine grooves or other textures on the edge, and better yet to bevel the edges so that the reflection goes away from the film. Just a quick progress report for today.
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