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  1. Replies
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    Re: 5 x 7 film holder confusion

    Definitely half plate size.

    Cheers,
    Jason
  2. Re: Etsy: An On-line Gallery for Selling Prints?

    Yes I’ve sold a few via Etsy, though my store is more an outlet for dry plates.
  3. Re: A DIY 177mm f/8 Cooke triplet for 4x5 from off-the shelf lenses that YOU can bui

    Someone asked the question about replacing the center lens with a custom one:

    If you can get a custom lens made, use Ohara S-FTL10 or Schott K10 for the negative lens with the following...
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    Re: Exact Full Plate Image Dimensions?

    Whole plate is a great format and amongst my favorite.

    The whole plates I make are exactly 215 x 164mm (+0 / - 0.25mm tolerance) x 1.3mm thick. The glass is precut and so it’s very consistent....
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    Re: Dektol for Lane Speed Plates? D-76?

    You can reuse a plethora of developers including Dektol stock and diluted. Check Kodak’s data sheet for guidance.
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    Re: Dektol for Lane Speed Plates? D-76?

    Way underdeveloped. Check out the Technicals and Tips page at www.pictoriographica.com

    D-76 and Dektol dev times both listed tgere...for stock solutions.
  7. Replies
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    Re: Stearman Press SP-810

    As Tim mentions after your post, it became quickly obvious that the tank keeps the temperatures consistent enough for good results (I develop at 40C) ... and of course the proof is in the pudding. ...
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    Re: Stearman Press SP-810

    Hey Roger,

    The CHS 100 II sheets I developed were of a local family ... friends that I took pictures of for Christmas Cards so I didn't post those publicly (they ended up picking the dry plate...
  9. Re: Is it worth it to use the Speed Graphic handheld from time to time?

    For what itís worth.. Iíve only ever taken two 4x5 shots handheld: both under the tropical sun of Hawaii, and both dry plates. Otherwise, I set up on a tripod. I use a speed graphic. Itís a...
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    Re: Negative negatives - using SP445 Tank

    Are you inserting the film into either your film holders or into the tank holders upside down?
  11. Replies
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    Re: Stearman Press SP-810

    If you want to see results of developing 8x10, the color photos I last posted in the media section were developed in the SP-810 initial production tank that I tested for them. That include Ektar,...
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    Re: New Ilford darkroom survey, December 2019

    Thanks Oren!
  13. Replies
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    Re: how do you shoot 1 to 3 second exposures

    If my meter wants 1.5-3 seconds, it will often mean Iím not shooting wide open, and therefore not going for a narrow Depth of Field look. So... I will often stop down another stop so that the...
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    Re: 8x10 film processing

    Jim you can fill it up with half-a-gallon of chemicals if you want.. the minimal amount that SP advertises is just that... the minimum amount to get good results, but you can put a lot more in.
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    Re: 8x10 film processing

    I’ve been using the production prototype tray you saw quite a bit and still really like it. I think you’ll be happy with it when you get yours.

    -Jason
  16. Re: Combining two Petzvals, would it make sense?

    Changing pupil size has little to do with what I was talking about. Rather, I’m speaking to what the OP was asking.
  17. Re: Alert about a possible problem batch of Xtol

    Anybody who works with subcontractors knows how painful switching suppliers can sometimes be.
  18. Re: Combining two Petzvals, would it make sense?

    The field lens group of a Petzval corrects coma and balances astigmatism of the objective group. So mismatching the the objective group and field group will result in degraded off-axis performance. ...
  19. Re: Very rich historical lens diagram resource and additional materials

    There wouldn’t be much to help with until I get the prescriptions pulled into Zemax and then saved. That takes time to set them up properly, which includes identifying currently available glasstypes...
  20. Re: Very rich historical lens diagram resource and additional materials

    I have a long-running project of converting all the designs on dioptrique into modern zemax format. Zemax is the most commonly used optical design tool...once converted, the database will be a...
  21. Re: ChromaGraphica Double Dry Plate Holder Kickstarter - Friday 9 August 2019 Noon la

    The first production representative prototype is here!

    197241

    Steve at Chroma Camera just received his copy as well. We will use these to draft an assembly procedure and verify functionality. .
  22. Replies
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    Re: Whole Plate, 8x10

    Probably about half 5x7 sales. It’s not a lot, but it’s enough to know that there is interest. I think what holds it back is lack of modern cameras, so I put a bug in Steve Lloyd’s ear about...
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    Re: Whole Plate, 8x10

    Let me correct one of your assumptions about whole plate: I will make any size dry plate needed for as long as there is a demand. I shoot whole plate myself (as you know), and so will always make...
  24. Re: Glass Plate 4.5 x 6.5 Holder compatibility

    Get or make a plater adapter insert 8x10 -> whole plate for 8x10 plate holder.
  25. Re: Cleaning up old plate holders and camera

    Awesome!
  26. Replies
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    Re: How about some infrared images

    Woodmont Barn, Hollis NH in Infrared


    Just came across some large sheets of Kodak Aerochrome. Before I cut it down, I couldn’t resist running an 8” x 10” sheet through my 2D. 12” Kodak...
  27. Re: Greta Thunberg wet plate photos by Shane Balkowitsch

    Shane does awesome work. I don't care who he photographed, this is a great set of pictures.
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    Re: October - put up or shut up

    I have plenty of opinions about optics and emulsion, so as penitence..

    8x10 J Lane Speed Plate Ortho 25 dry plate of Max and his wife Kelly. Max is a mechanical engineer who recently joined...
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    Re: Foam for lens case

    Drew has a good recommendation to visit McMaster Carr. That’s usually the first source to look for hardware for engineers at work... think Lowes or Home Depot but for engineers who get paid to...
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    Re: Foam for lens case

    Outgassing is going to be a problem for long term storage with foam. The suggestion of slots in a wooden case is best. Line the slots with felt and ensure the lens canít jostle around when the lid...
  31. Re: ChromaGraphica Double Dry Plate Holder Kickstarter - Friday 9 August 2019 Noon la

    You weren’t expecting the hack job prototype to go forward into hackjob production were you? ;)
  32. Re: ChromaGraphica Double Dry Plate Holder Kickstarter - Friday 9 August 2019 Noon la

    An update post-campaign!

    We have high-quality renders of the (very near) final design, as well as reporting of the preliminary weights of the holders. You can see the full update here:
    ...
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    Re: Shelf life of J Lane Dry Plates

    Peter yeah but just be aware of condensation issues
  34. Replies
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    Re: Shelf life of J Lane Dry Plates

    I put an expiration date of two years out from when I coat them. That two years is based on hauling plates around in the cab of my truck through summer and winter for two years straight, after which...
  35. Re: ChromaGraphica Double Dry Plate Holder Kickstarter - Friday 9 August 2019 Noon la

    Aaannnd done! Fully funded with plenty to spare. Now we make these real.

    Cheers,
    Jason
  36. Re: ChromaGraphica Double Dry Plate Holder Kickstarter - Friday 9 August 2019 Noon la

    Thanks Kent!
  37. Re: ChromaGraphica Double Dry Plate Holder Kickstarter - Friday 9 August 2019 Noon la

    Thanks Roger and yeah we have the light traps figured out. K.I.S.S. method (Keep It Simple, Stupid!) and not reinventing the wheel helps.

    Cheers,
    Jason
  38. Re: ChromaGraphica Double Dry Plate Holder Kickstarter - Friday 9 August 2019 Noon la

    8 hours until campaign end.

    Thank you to all who have supported the campaign.

    Cheers,
    Jason
  39. Re: ChromaGraphica Double Dry Plate Holder Kickstarter - Friday 9 August 2019 Noon la

    Campaign ends THIS WEEKEND! Sundat at midnight Eastern.

    The campaign is fully funded, so the holders *will* happen. If you want to get in on the first production run, nowís your chance.
  40. Re: ChromaGraphica Double Dry Plate Holder Kickstarter - Friday 9 August 2019 Noon la

    Final week of the campaign!

    I'm happy to announce that the campaign reached its funding goal last week, so these holders *will* become a reality. With the campaign ending at midnight on September...
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