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MarcoFilms wasseee... 😎 <a href="https://gram.social/discover/tags/doka?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#doka</a> <a href="https://gram.social/discover/tags/AgfaPhoto?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#AgfaPhoto</a> <a href="https://gram.social/discover/tags/APX400?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#APX400</a> <a href="https://gram.social/discover/tags/Rodinal?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Rodinal</a> <a href="https://gram.social/discover/tags/darkroom?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#darkroom</a> <a href="https://gram.social/discover/tags/photolab?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#photolab</a> Eindelijk dan de inauguratie van m'n nieuwe doka 😊 <a href="https://gram.social/discover/tags/Analog?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Analog</a> <a href="https://gram.social/discover/tags/Photograhy?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Photograhy</a>

Jon Bosak<a href="https://flx.masto.host/tags/filmphotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#filmphotography</a> <a href="https://flx.masto.host/tags/photolab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photolab</a>Someone posted recently about realizing something he'd been doing wrong that made him feel like a complete idiot. I have a better one. Everything I've been showing looks just right on the 4K monitor I use for editing but a little too contrasty on my laptop. I assumed that this was a limitation of my laptop screen. Turns out that I set the 4K for video editing at a lower gamma years ago and forgot all about it. Wish I had time to go back and redo everything. Ah well.

Anders ConbereLast week I wrote a little program to help me construct process tone curves for analog printing.The basic idea is that every photography process has a unique ton curve mapping the quantity of input light to density (tone) on the print. If we want to create negatives (digitally or analog) that when printed exhibit the full tonality of the process with smooth contrast then we need to know what that curve is.We can identify this curve experimentally by iteratively making adjustments, printing, analyzing, and reprinting. This is a long process and requires a lot of time and energy.There are software solutions to help (ChartThrob is the main one) but at least ChartThrob exists only as an Adobe Photoshop plugin.So I figured, why not write my own that isn't locked into that platform? What could go wrong?!Here are the results from the first test using New Cyanotype.Before applying the curve you can see that it is extremely clipped in the shadows and highlights.After is much improved with a nearly linear gradient from darkest to lightest. There are still some issues: It sill clips in the whites around 95 (I think this is a bug with how I'm linearizing on the high end), and.12 looks too dark (I think that is a coating error on my part).I'm super excited with how well this worked and will probably give it a shot on the next process I try (Salted Paper is next on my list).<a href="https://merveilles.town/tags/filmphotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#filmphotography</a> <a href="https://merveilles.town/tags/photolab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photolab</a>

Jon Bosak<a href="https://flx.masto.host/tags/photolab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photolab</a>1/It's distressing to see so many horribly grey b&w film scans posted here.It is possible to use a tonal scale reduced to the middle zones in a deliberate way -- as an artistic effect (however well or ill considered) or as a feature of the materials, as in the case of platinum prints. But many of these images are obviously attempting something like a classically correct b&w print but are failing badly to approach that ideal. They are ugly to no particular purpose. Why?

Jon Bosak<a href="https://merveilles.town/@anders" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@anders</a> This is fascinating, and I'd like to be able to come back to the whole series. Maybe use a hashtag? The one I use is <a href="https://flx.masto.host/tags/photolab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photolab</a>, which is just my own tag, but feel free to use it if nothing better occurs to you.

Jon Bosak<a href="https://flx.masto.host/tags/photolab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photolab</a>Our analog photography club is the best. Today, talk turned to the collodio-chloride process, which I had never heard of. This is not wet collodion, for negatives ; it's dry collodion for printing-out-paper. It's supposed to be the most archival of all printing processes because the collodion seals away the image from the sulfur compounds in the air that will (over a long period of time) degrade the silver. See about 2/3 of the way down in this article: <a href="https://www.alternativephotography.com/printing-out-processes/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.alternativephotography.com/printing-out-processes/</a>

Jon Bosak<a href="https://flx.masto.host/tags/photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photography</a> <a href="https://flx.masto.host/tags/filmphotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#filmphotography</a> <a href="https://flx.masto.host/tags/photolab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photolab</a>1/At my age, it's fascinating to watch misconceptions about old technologies turn into "fact." E.g.:"Leica and Contax cameras were highly sought after by both Axis and Allied photographers.... Photographers like Robert Capa made extensive use of Contax cameras during the war..."<a href="https://petapixel.com/2024/12/06/the-history-of-leica-vs-zeiss-and-the-battle-of-the-rangefinders/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://petapixel.com/2024/12/06/the-history-of-leica-vs-zeiss-and-the-battle-of-the-rangefinders/</a>

Jon Bosak<a href="https://flx.masto.host/tags/filmphotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#filmphotography</a> <a href="https://flx.masto.host/tags/photolab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photolab</a>1/17There aren't very many of us left who actually learned photography and worked in it for years using completely manual equipment and completely silver-based processes. After having almost died in July (and having technically actually died three years ago, when my heart was emptied of blood and put on ice for an hour and a half), I'm feeling the urge to leave behind some notes for the benefit of those people crazy enough to want to get into this.

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Lance (Ranger Bob) Taylor<a href="https://universeodon.com/tags/Adobe" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Adobe</a> is dead to me now. Long live <a href="https://universeodon.com/tags/DXO" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DXO</a> <a href="https://universeodon.com/tags/PhotoLab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PhotoLab</a> <a href="https://www.flickr.com/photos/rangerbob/albums/72177720320693166/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.flickr.com/photos/rangerbob/albums/72177720320693166/</a><a href="https://universeodon.com/tags/yegastro" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#yegastro</a> <a href="https://universeodon.com/tags/Astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astrophotography</a> <a href="https://universeodon.com/tags/MilkyWay" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MilkyWay</a> <a href="https://universeodon.com/tags/Starlink" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Starlink</a>

Jon Bosak<a href="https://flx.masto.host/tags/photolab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photolab</a> <a href="https://flx.masto.host/tags/filmphotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#filmphotography</a> <a href="https://flx.masto.host/tags/believeinfilm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#believeinfilm</a>1/<a href="https://toot.cafe/@thereisnocat" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@thereisnocat</a> <a href="https://mastodon.social/@coldkennels" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@coldkennels</a> <a href="https://fosstodon.org/@shom" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@shom</a> I've been asked for some details regarding divided b&w film developers. My standard split dev back in the day was D-76, so I'll use that as my example, but AFAIK all old-timey divided developers work pretty much the same way.Let's review some basics for starters.

Jon Bosak<a href="https://toot.cafe/@thereisnocat" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@thereisnocat</a> <a href="https://mastodon.social/@coldkennels" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@coldkennels</a> <a href="https://fosstodon.org/@shom" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@shom</a> OK. I'll post something in a new thread under <a href="https://flx.masto.host/tags/photolab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photolab</a> later today.

Jon Bosak<a href="https://flx.masto.host/tags/filmphotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#filmphotography</a> <a href="https://flx.masto.host/tags/photolab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photolab</a>Seen today at our film club: a clip-on laser rangefinder for USD30.This is a big deal for old-time camera fans. Many old film cameras (ca. 1935-1955) had fine lenses but only a manual distance setting for focus. These were often succeeded by a version that added a RF and were/are a lot more expensive. This device makes those earlier cheap but great cameras much more usable.<a href="https://reflxlab.com/products/distance-meter-for-vintage-cameras-free-shipping" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://reflxlab.com/products/distance-meter-for-vintage-cameras-free-shipping</a>

Jon Bosak<a href="https://flx.masto.host/tags/filmphotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#filmphotography</a> <a href="https://flx.masto.host/tags/photolab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photolab</a> Managed to get together the energy to process a test roll of 35mm Tri-X (ISO 800) in Diafine. Surprisingly, I'm liking it best for photos out in the light, like these two. Indoor shots, not so much. Reliably delivers printable photos, but there's something vital missing in the midtones; cauc skin comes out looking strangely flat. Since I try to use 6x6 in good light, it looks like I'll rarely have a use for this combination.

Jon Bosak<a href="https://flx.masto.host/tags/filmphotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#filmphotography</a> <a href="https://flx.masto.host/tags/photolab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photolab</a>1/Well, I said that I was taking two weeks off from my <a href="https://flx.masto.host/tags/retrobosak" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#retrobosak</a> project to visit my granddaughter, and instead I'm taking two weeks off to be sick at home with a really persistent cold.But sick in bed, I experienced a genuine conversion experience. I am born again, no longer in the thrall of that Satan whose fell name is ADOBE.

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