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Recent content by dkonigs

  1. dkonigs

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    Europe v USA approach to usage of accessories and chemicals for photography

    I'm not sure what sort of sentiment started this thread, but there are absolutely plenty of "gadget" companies on the other side of the Atlantic. (Intrepid, Heiland, Jobo, Filmomat, the folks doing the Maya kickstarter, etc) If there's any divide, it has more to do with attitude and...
  2. dkonigs

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    Problem with fan on Ilford Multigrade 500H enlarger head

    In my case, yes, putting in the modern capacitor and reassembling it did the trick. Of course mine is also kinda in disgusting shape, and likely only to be used for bench testing, but it is working. I'd just make sure that whatever capacitor you use for this is X-rated. And probably better to...
  3. dkonigs

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    Printalyzer - Darkroom enlarging timer & exposure meter

    There are a number of parts that are backordered. I've recently started placing my own production orders for several of them (including the FT260Q), because its going to take a few months before everything ships. (or at least the full ordered quantity ships) For actually loading the firmware...
  4. dkonigs

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    Printalyzer - Darkroom enlarging timer & exposure meter

    Yeah, a lot of those older "bespoke" enlarger heads are always going to be an issue. I have looked extensively at the Ilford 500 Multigrade head, and have a good understanding of its control panel interface, and may be able to make an adapter for it. But as far as the rest, its hard to know...
  5. dkonigs

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    Printalyzer - Darkroom enlarging timer & exposure meter

    For actual printing, it absolutely will work for C-41 film. Timing is timing, so most of the functionality will work perfectly. I even added a special "Blackout switch" to the device that lets you turn off all of its illumination so you can handle color materials without having to physically...
  6. dkonigs

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    Printalyzer - Darkroom enlarging timer & exposure meter

    By default, it just controls a normal enlarger by turning power to an outlet on and off. Just like any other enlarger timer. However, it also has the ability to control enlargers with more sophisticated control mechanisms via a DMX512-compatible control port. But its best to think of that as...
  7. dkonigs

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    Printalyzer - Darkroom enlarging timer & exposure meter

    Not sure I understand the question. What specifically are you referring to?
  8. dkonigs

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    Printalyzer - Darkroom enlarging timer & exposure meter

    I know I've mostly been posting about this project on social media, but I figured I'd drop another little update here. The hardware is finally ready for the "beta" users, and I've already sent out the first package. Just to show that this is "real", here's an overview of what I put in that...
  9. dkonigs

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    Ilford MGRC V Deluxe has a little reciprocity error

    So I know I'm coming around to this thread long after its fallen idle, but it is something I've been wondering a little about recently. First, that tidbit about the RH Analyser compensating for paper reciprocity is quite interesting. I've long been trying to figure out why its time adjustment...
  10. dkonigs

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    My Dollar Densitometer

    Well, the AMS sensors I had in mind are the fancier multi-spectral sensors like the AS7343 or the newer TCS3448. These can do a lot more than just color temperature. They just can't match the specific curves for Status A/M in ISO 5-3:2009. (and the difference between Status A and Status M...
  11. dkonigs

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    My Dollar Densitometer

    And believe me I've tried. In theory its a drop-in solution to my existing densitometer design to add color and multispectral capabilities. The problem is that I don't get to chose the response curves of the channels, making it almost impossible to actually make an ISO 5-3:2009 compliant...
  12. dkonigs

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    My Dollar Densitometer

    This thread is mostly a tl;dr for me at this point, but these sensors are absolutely the reason that 90% of the chatter on CDS vs SPD vs ADC choices is a complete waste of energy at this point. Just use one of these sensors, and call it a day. At that point all of the work is entirely around...
  13. dkonigs

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    Is it possible to make a DIY LED splitgrade system?

    Yeah, others have probably already said all of this, but its 3 wires... +5V, GND, Data. As far as which is which... The connector pins, looking into the male side: Upper-Left: Red wire, Power (+5V) Upper-Right: Black wire, Ground Middle: Blue wire, Data Though to be safe, its probably best...
  14. dkonigs

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    Is it possible to make a DIY LED splitgrade system?

    Psss... For anyone wanting to take the easy route, the Intrepid LED enlarger head is basically this design (array of RGBW Neopixel-style LEDs behind a diffuser).
  15. dkonigs

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    Is it possible to make a DIY LED splitgrade system?

    This is interesting... Lately I've been doing some bench-tinkering with an Ilford 500 system to figure out its interface on an electronics level, and one of my to-do items there is mapping out its exact blue/green control signals for each combination of settings. In the process of that, I...
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