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  #photography #travel #taipei

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  #photography #filmphotography #darkroom I tested my paper and printing workflow and got some interesting curves. See alt-text for tech details. Most interesting: grade 2 and 2.5 are virtually identical (except that grade 2 is denser). Grade 1.5 and 2 have virtually the same calculated ER. Is this due to the high-CRI LED I'm using instead of an incandescent? The no-filter curve would do interesting, possibly attractive, things to gamma. Next weekend, if I have time: check split-grade...

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  #photography #filmphotography #travel

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  #photography #filmphotography #darkroom I did a series of split-grade density test strips. I tried grade 00 at 20 seconds, plus grade 5 at 5, 7.1, 10, 14.1, 20, 28.3 and 40 ses (half-stop sequence). The results are interesting. You get a range of "paper grades" from about 0 to about 3, but with much different toes (highlight separation is increased) and shoulders (shadow separation is reduced), compared to the base curves.

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  Following up on the curves I posted earlier, I had Claude write Python to turn the S curves into Photoshop-style curves, and animate them from softest to hardest. The results were not what I expected -- not at all a "smooth" evolution from first to last. The "deviation animation" shows how the brightness at each input point differs from an ideal linear 1:1 conversion #photography #filmphotography #darkroom

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  #photography #largeformat #darkroom

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  This pair of curves compares true 10m at 20C versus the MDC calculated 11:17 at 18.5C (it was chilly that night). The curve just doesn't match. The longer dev curve has higher DMAX but a longer toe. And just a different shape. I had read that Fomapan 100 really needs to be developed at a consistent temperature, but this really shows it. All 8x10 sheet film, by the way. 2/

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  RE: https://mastodon.social/@sundogplanets/116059201806967549 Posted my comments as PC0107595 and PC0110079. Thanks @sundogplanets for banging the drum on this pair of projects.