Search:

Type: Posts; User: gnd2; Keyword(s):

Page 1 of 3 1 2 3

Search: Search took 0.01 seconds.

  1. Replies
    12
    Views
    597

    Re: Pop-up darkroom...

    That's what I was thinking - wet plate or direct positive paper.
  2. Replies
    15
    Views
    486

    Re: Bostick & Sullivan kits

    What's a "proper" negative? My negatives have a good contrast range, but I'm used to the luxury of VC printing and making small tweaks to taste when printing. Are you saying with Pt / Pd you want...
  3. Re: Shutter Speed testing with Android Phone and Photoplug

    You don't need a battery (nor a switch). You need to connect it to the correct terminals of the jack.
    http://www.artdecocameras.com/resources/shutterspeed/
  4. Re: Wollensack Velostigmat 12" - your judgement please

    I didn't mean to sound like you don't have a reason to be unhappy, I just didn't want to get into the judgement debate and was trying to remain neutral (may not have succeeded there). I can totally...
  5. Re: Wollensack Velostigmat 12" - your judgement please

    I actually saved this auction to see what it would go for. I knew that Jim loves a little more "character" in his lenses than I wanted, so I passed. Sorry you weren't happy.



    I've seen this...
  6. Thread: PC Sync Debounce

    by gnd2
    Replies
    8
    Views
    355

    Re: PC Sync Debounce

    I've had the same problem with my packard. The thing is, the switch is closed as long as the shutter is open. Any stutter or hesitation would cause multiple triggers. If I get a good crisp...
  7. Thread: Help with Filters

    by gnd2
    Replies
    9
    Views
    576

    Re: Help with Filters

    I'm facing a similar issue. Cokin still has a universal adapter ring with screws like you described for their x-pro series holder. It looks like a few other brands / systems used to have similar...
  8. Replies
    19
    Views
    687

    Re: Neutral Density filter advice?

    Solid
    https://www.bhphotovideo.com/c/product/1158728-REG/lee_filters_75nd_std_100_x_100mm_neutral.html

    I actually have a set of soft grads that I got a good deal on several years ago (at the time...
  9. Replies
    19
    Views
    687

    Re: Neutral Density filter advice?

    Get closer to wide open at the 1/25 or 1/50 speeds offered by my slowest shutter with fp-4 or portra 160. Maybe not necessarily all the way to 4.5, but at least 5.6.


    It's the brightest...
  10. Replies
    19
    Views
    687

    Re: Neutral Density filter advice?

    Took some readings in bright shade around the outside of the house and was getting close to f/11 1/30 125, so I guess .6 or .75 could be all I need.

    The Lee Gelsnap and a set of polyester filters...
  11. Replies
    19
    Views
    687

    Re: Neutral Density filter advice?

    I had no idea! I could have gotten one of these and then just gotten barrel lenses instead of hunting down shuttered versions!


    Those Blackmagic guys sure take their ND seriously! They seem to...
  12. Replies
    19
    Views
    687

    Re: Neutral Density filter advice?

    Sorry, how does a Speed Graphic help? Especially if it can't take the 12"? :confused: I wasn't really looking at getting another camera, and I'm not familiar with Speed Graphics.

    Correct me if...
  13. Replies
    19
    Views
    687

    Neutral Density filter advice?

    Now that I've acquired a few "vintage" portrait lenses, and with the hopefully impending delivery of a Lomograflok Instax back, I've been thinking some ND filters might be useful.

    The lenses are...
  14. Replies
    13
    Views
    793

    Re: Meter & f-stop discrepancy

    Are you saying that modern transparency film has increased latitude or that we just aren't using transparencies any more? Because I'm planning to shoot transparencies for stereo viewing.

    In...
  15. Replies
    4
    Views
    237

    Re: San Diego Machine Shop Recommendation?

    I wasn't getting my hopes up but figured it was worth a shot. Some older posts seemed to suggest there were shops that would take on a small one-off project for a reasonable price. But I guess...
  16. Replies
    4
    Views
    237

    San Diego Machine Shop Recommendation?

    I have a toyo lens board (aluminum) that needs a larger hole. I've seen it recommended to have a machine shop do it rather than a potentially dangerous DIY hack job, but I'm having trouble finding a...
  17. Re: Extremely Dumb Questions about Lens Systems (Specially Cooke triplet)

    Your questions don't really have simple answers without a fairly in-depth understanding of physics. The thing about physics is that the details are important. "rays gather at one point" is ambiguous...
  18. Replies
    33
    Views
    2,403

    Re: Leaf Shutter High Speed

    I was referring specifically to the fastest shutter speed with the triangle comment. At the fastest speed, it starts closing again as soon as it reaches fully open, so a triangle. At slower speeds...
  19. Replies
    33
    Views
    2,403

    Re: Leaf Shutter High Speed

    I took your previous post at face value because I didn't want to get into the device characteristics, but since you've mentioned it again...

    No, it's not acting as a switch. It's wired in a...
  20. Replies
    33
    Views
    2,403

    Re: Leaf Shutter High Speed

    Yes, but this is still an imperfect measurement. As the measurement improves, the slopes lean in towards each other making a tighter peak at the top. Assuming a perfect measurement would be very...
  21. Replies
    33
    Views
    2,403

    Re: Leaf Shutter High Speed

    Horizontal axis is sample number. Sample rate is about 9615.3846 samp/sec. ADC is in free-run mode, 16 MHz clock source / 128 prescaler / 13 clock cycles per conversion.

    Lens was a Mamiya Sekor...
  22. Replies
    33
    Views
    2,403

    Re: Leaf Shutter High Speed

    Thanks for this. I've read quite a few threads but don't recall ever seeing this bit of information.

    I diffused the light going into the lens and placed the sensor near the focal distance of the...
  23. Replies
    33
    Views
    2,403

    Re: Leaf Shutter High Speed

    Well that's disappointing. I found some info about using a photodiode, maybe I'll have a go at that some day.


    Wanted to see if it actually started closing immediately after it reached full open...
  24. Replies
    33
    Views
    2,403

    Re: Leaf Shutter High Speed

    I have not. I was hoping to avoid having to burn film to test all my lenses. I may have to, but it's become more about my curiosity of what's actually happening than simply the practical question...
  25. Replies
    33
    Views
    2,403

    Leaf Shutter High Speed

    Long post for anyone interested in geeking out for a bit. If you think high shutter speed are irrelevant because we should always stop down to maximize DOF and only use slow shutter speeds, this may...
  26. Replies
    51
    Views
    4,593

    Re: Magnesium Powder Flash

    At least he correctly stated "watt-seconds" and not watts or watts/second like most people :rolleyes:
  27. Replies
    51
    Views
    4,593

    Re: Magnesium Powder Flash

    Hasn't anyone else seen the old movies where everyone is singed and blackened with soot after the flash goes off? :p
  28. Thread: Bad chems -> Blix

    by gnd2
    Replies
    1
    Views
    420

    Re: Bad chems -> Blix

    It's not uncommon for some of the chemicals to precipitate out and form crystals. Heat the concentrate to > 85F and stir to redissolve the crystals.
    If it's for film I'd test with some unimportant...
  29. Replies
    26
    Views
    3,316

    Re: Used gear and availability

    I feel like the whole used market has slowed down a bit during the virus outbreak.

    Speaking of Toyo, I'm actually looking for good deal on a nice 45G. Been using a 45E for several years (picked...
  30. Replies
    13
    Views
    1,560

    Re: Clothes iron as tacking iron?

    That's what I use. Had it left over from the RC glider I built years ago. Works fine.
  31. Replies
    24
    Views
    3,766

    Re: Continuous Lights & Metering

    Landscape photographers control contrast of the negative primarily though development since they can't control the light. But using artificial lights on a tabletop setup affords you much more...
  32. Thread: Color Crossover?

    by gnd2
    Replies
    6
    Views
    881

    Re: Color Crossover?

    Thanks, that was very helpful! I get it now. I'm finding it challenging to learn how to critically judge color.
  33. Thread: Color Crossover?

    by gnd2
    Replies
    6
    Views
    881

    Color Crossover?

    I've been doing some more printing from color negative and reading stuff online I keep seeing mention of "crossover" but I haven't found any explanation of what it actually is or examples or what it...
  34. Replies
    42
    Views
    19,669

    Re: Moving away from Adobe

    I didn't realize Adobe would still transfer CS6 licenses. I was disappointed that I just missed buying CS6 before they pulled it. Don't know where I'd find a (legit) used copy though.
  35. Replies
    42
    Views
    19,669

    Re: Moving away from Adobe

    Keep looking, it's there. Healing, blemish, inpainting, patch.
  36. Replies
    42
    Views
    19,669

    Re: Moving away from Adobe

    Why don't you just download the free trial and see how it works for you? It's not identical to PS so there's a little bit of learning curve, but not bad. I'm happy with it for the most part, but I...
  37. Re: Compur Shutter and Strobe firing at slow shutter speeds

    Think I need something like that for my Packard shutter, it's giving me multiple flashes too.
  38. Replies
    6
    Views
    1,091

    Re: copal #0 stubborn screw

    Few drops of acetone. Not sure if it made a difference or not but all of a sudden the screw was loose.
  39. Replies
    6
    Views
    1,091

    Re: copal #0 stubborn screw

    Got it, thanks!
  40. Replies
    6
    Views
    1,091

    copal #0 stubborn screw

    Trying to get the escapement out for cleaning but one of the screws is awfully stubborn. Saw another discussion where someone had actually sheared the head off the same screw, want to avoid doing...
Results 1 to 40 of 101
Page 1 of 3 1 2 3