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No, there's no conversion for LCDs — and you wouldn't have anything approaching the resolution you'd want for a print that size anyway using a digital projector. The usual procedure for making alternative process prints from digital files is to print a negative on transparency film. It's the go-to method for cyanotypes, as well as for platinum/palladium and ...


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I've done it before and it works. I used a AAXA 720p portable projector on cyanotype paper. The resolution isn't great, but maybe it's good enough for your purposes.


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The process is reduction of iron Fe(III) to Fe(II), which then forms ferric ferrocyanide (Prussian blue). It is accomplished by UV rays. The UV is the fun part: you can safely work the solution under most indoor lightning (which has no UV) and then expose under sunlight (which has UV). The process works in the near visible UV range = 350 - 400 nm, so you ...


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I'm seeing brush strokes all over: If the paper is textured, try alternating vertical and horizontal brush strokes. Possibly try a foam brush with more emulsion on it. If the paper is smooth, try smoothing out the emulsion using a glass rod instead.


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One of the major advantages of alt processes is that you need not be too fussy with your negatives. About anything will do! (do check out the algae cyanotypes from 1840's by Anna Atkins!) Having said that: good starting point are transparencies used for overhead projectors. These were more common before beamers took them over, but the blank transparencies ...


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I know this is an old question but I've been experimenting with this. Projectors WILL expose cyanotype paper - I've been using 'nature print' paper. With an additional lens to get the focusing distance down (an old photographic enlarger lens and also a cheap a4 plastic fresnel - they turn out to have the same focal length) I can get a good image on an A6 ...


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