Derek Konigsberg
Derek Konigsberg
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Comments

  • Dashan Sheying
    Dashan Sheying 3 days ago

    Well done. If I ever get a Jobo, I will use your videos as great lessons learned the hard way. Thanks for sharing. Stuart

  • Mike Allen
    Mike Allen 3 days ago

    Good info Derek. I have a mixer tap in the darkroom , so I fill the jobo with water a few degrees below processing temperature to speed things up. I'm totally with you about turning the motor off for raising and lowering. It can make some unpleasant graunching noises if the cogs don't mesh cleanly, especially on lowering. I just leave the 'Rotation:' selection highlighted on the keypad during processing and use the up/down arrow buttons to start and stop the motor as required. I have always done my processing in 'Manual' mode, using a stopwatch to time each stage, so I can avoid what I saw as potential problems using the 'Auto' modes.

    • Derek Konigsberg
      Derek Konigsberg 3 days ago

      Yeah, my darkroom is in a detached structure that gets its water supply from the same place as sprinklers and garden hoses. I'm seriously considering asking about having a gas-powered "point of use" water heater installed on the outside of the structure, the next time I have a bunch of stuff for my contractor to do. (There actually are gas lines nearby, for unrelated reasons.) When I originally set this room up, my contractor suggested a small electric point-of-use heater. I'm glad I declined, since it would have made my electrical problems so much worse.

  • Randall Stewart
    Randall Stewart Month ago

    Let's see. Cpp-3, shipping, selection of tanks and reels, and a variety of bits and pieces to allow use of Jobo tank(s) you already have: $4,200 more or less. I cannot find adequate value to seriously consider this.

  • Mike Allen
    Mike Allen Month ago

    Thanks for your review. I've been using one of these for a few years now (E6 & C41) and although I've had great results with film processing, I've also had a few problems. The drain tap doesn't completely stop the flow when fully closed; there continues to be a steady drip. I countered this simply by keeping the drain hose higher than the processor when not emptying it. The second problem occurred when I accidentally turned the heater on with no water in the processor. A safety cut-out switch operated within a couple of seconds.There is a reset switch for this (not labelled and hidden) at the left hand end of the processor. Another time the processor wouldn't switch on at all. I had to contact Jobo to get the instructions for resetting. This involves a sequence of button-pushing on the keypad; there is no dedicated reset switch for this.

    • Mike Allen
      Mike Allen 26 days ago

      Press up & down arrows at the same time. Go to the bottom of the menu to Service and press Enter, then 5 x Start. Go down to Memory Control. Press Enter x 3, then F1, then Enter x 3 again. Main Menu should now return after reset.

    • Derek Konigsberg
      Derek Konigsberg 26 days ago

      Would you mind sharing this magic reset sequence? I thankfully haven't run into such a problem myself, but I would like to have it in my notes just in case it does happen.

  • Randall Stewart
    Randall Stewart Month ago

    What a powerful argument for not buying a Jobo product. $3700 for the base unit plus several hundred more for tanks reels, etc. After $4,000, how many trips to the hardware store for bits and pieces to let it basically work without leaking. The thing is huge for what it does, plasticy, and corner cutting designed. Borderline useless for B&W processing. If you need to do a dozen color rolls a day, or more, some justification begins to appear. For this kind of money, we used to have machines which would automatically load and unload the entire chemical process and then run though a self-cleaning cycle, with half the footprint and none of the hassle. Anyone having to due a few color rolls at a time can get everything here covered for a small fraction of the price, but will have to shop for used and bygone equipment.

  • D Thompson
    D Thompson Month ago

    A1 content, keep uploading! Did you check followsm . c o m!? It’s the best way to promote your channel!!

  • Dashan Sheying
    Dashan Sheying Month ago

    Well done Derek. At this point, my development frequency doesn't warrant a Jobo rig yet when it does, your video(s) is a great reference. Thanks for sharing, Stuart

  • TangyOrange
    TangyOrange Month ago

    Love it!

  • Certain Exposures
    Certain Exposures 6 months ago

    Interesting breakdown. Thanks for sharing! I think I’ll include those test strips in the darkroom kit that I’m looking to build because it would be a shame to use bad chemistry. The 5 liter kit would be a lot to use up at once so I’ve been thinking of sticking to conventional 1 liter kits despite that blix issue. Choices, choices.

    • Derek Konigsberg
      Derek Konigsberg 6 months ago

      Yeah, I wish I could get a 1L kit with separate bleach/fix. Alternatively, I wish I could buy the individual chemicals more easily in small quantities (or with stock/starter solutions that would actually last if mixed 1L at a time). Though this is mostly an issue for the developer.

  • Certain Exposures
    Certain Exposures 6 months ago

    Nice prints from your community college class! I can’t wait to get back in class and crank out a couple keepers. You kept those in great condition. Have you done much portraiture with your graflex? Or do you go for mainly landscape/architecture with it?

    • Certain Exposures
      Certain Exposures 6 months ago

      Derek Konigsberg okay I’ll check it out 👍🏿

    • Derek Konigsberg
      Derek Konigsberg 6 months ago

      Thanks for the complements on those old prints. They actually have some discoloration (in the mattes and paper itself) if you look closely, but it doesn't show up in the video. The Graflex isn't really a great camera for portraiture, because it doesn't really rotate to the portrait orientation very well. I've mostly used it for architecture-type stuff when on a tripod, but the lack of movements limits it there. Its actually best used handheld, especially with a big flash, for press-type/party/out-and-about photography. (If you look at my Flickr page, there are some albums with "convention" photos I took with it.)

  • Certain Exposures
    Certain Exposures 7 months ago

    That's an interesting comment there about bleach and fix. I didn't know there was a debate about that. Subscribed!

    • Derek Konigsberg
      Derek Konigsberg 7 months ago

      @Certain Exposures I've never done a side-by-side comparison myself. Those scans were created by doing a "flat" positive scan on my Nikon CoolScan 9000, then opening them up in Photoshop and using the ColorPerfect plugin to invert them. Lately, I've found that this approach seems to give me the best results with color negative film.

    • Certain Exposures
      Certain Exposures 7 months ago

      @Derek Konigsberg That's really interesting. I have to look into this now. How much better are we talking? I did think the colors in your scans looked oddly nice for the car.

    • Derek Konigsberg
      Derek Konigsberg 7 months ago

      Yeah, its quite a debate. From what I can tell, anyone who has actually done a comparison seems to think separate bleach/fix produces better results. However, so few people actually have, that most of the conversations involve forum exchanges with a retired photo chemist who calls himself "Photo Engineer". Part of the problem is that its hard to actually buy the C-41 chemicals individually and in small quantities, and nearly all the hobbyist kits (except the two I mentioned) use blix. As a result, most people who dabble in color processing have likely never tried separate bleach/fix.

  • Nicos Photography Show

    A little music and you wont hear the fan. Thats what I do. Great progress so far.

    • Nicos Photography Show
      Nicos Photography Show 7 months ago

      @Derek Konigsberg Yeah, I use a bluetooth cheap speaker, works good enough for now.

    • Derek Konigsberg
      Derek Konigsberg 7 months ago

      Yeah, I'm planning to put a music solution into the room (possibly via a Sonos speaker, if my WiFi is reliable enough out there).

  • Blubari Blub
    Blubari Blub Year ago

    Holy moustache of tesla, this is amazing

  • Lixie Labs
    Lixie Labs Year ago

    This is fantastic sir! I've wanted to make a desktop .NSF/.GBS player (for NES/GB(C) music, respectively) for quite some time now, but never got around to studying those APUs for emulation. Two questions: - Do you have a Digikey/Mouser/McMaster etc. part number for those brass threaded pieces you melted in? I've just gotten a 3d printer and would love to play with those. - I haven't watched the rest of your videos yet - did you remove the RP2A03 from an existing Nintendo, or is there some cool and slightly dubious company offering 1:1 clones?

    • Derek Konigsberg
      Derek Konigsberg Year ago

      The hardware fittings were mostly from McMaster-Carr, and you can find all the part numbers in this document: github.com/dkonigsberg/nestronic/blob/master/models/models.md One of my RP2A03 chips was desoldered from an existing Nintendo. However, the rest of them (including the one used in this assembly) were purchased from: www.mikesarcade.com/cgi-bin/store.pl?sku=RP2A03