[I]"would you just use a residual silver test kit like the one Photographer's Formulary sells[/I"]
Well, I wouldn't---the test kit is designed to make a solit deposit visible against a reflective...
Type: Posts; User: Harold_4074; Keyword(s):
[I]"would you just use a residual silver test kit like the one Photographer's Formulary sells[/I"]
Well, I wouldn't---the test kit is designed to make a solit deposit visible against a reflective...
My criteria of minimalism extend beyond artistry to include technical details. Here's my best effort to date made on an uncoated glass plate:
Putting the platform at the bottom for stability sounds good, until you realize that the weights are supposed to counterbalance both the platform and a camera weighing maybe 50+ pounds. So Tin Can is...
If the metal block doesn't have to be removable by pushing in to the inside of the housing, you could consider getting one of the short cable extensions made for recessed lensboards and epoxying the...
Dustyman: Tin Can's fix looks perfectly sound to me. His stand and mine are the same configuration, with a threaded hole for the clevis bolt to screw into. I believe that yours is a different base...
Can't help you with the rubber ring question, but I have a word of warning.
Barry Cochran restored the stand that I have, and delivered it (Tennessee to California!) in a rented pickup truck. A...
I've been away from the forum (and LF photography) for a couple of years, and I must say that this thread was a delight to discover today.
A lot of folks talk about sharing, but it usually stops...
John already has been waxing mightily about this venture. Probably doesn't need to wax, probably doesn't know it, either!
Hmmm. Nothing new for three days. Interest has apparently waned...
I can all too clearly recall the first time I tried to set up my brand new Calumet fully plumbed darkroom sink---and discovered that the mixing valve was not designed to work at less than about 5...
depending upon the relative humidity, agitation/air movements, trays and sink composition (heat transfer characteristics) - your actual solutions temps
John Layton listed most of the commonly...
The sulfur precipitation is caused by oxidation of thiosulfate and/or acidity from dissolved carbon dioxide (sulfite is normally present as a preservative). Cheap polyethylene bottles are somewhat...
It really depends on the water quality and plumbing. I have well water with a huge amount of dissolved iron, plus various salts (including nitrate). Plastic pipe apparently allows enough oxygen in to...
The Epson V700 comes with film holders, but also a template for positioning things directly on the glass platen. When setting up a scan, there is a choice between "film holder" and "film area guide"...
it’s not a 4-40 or 2-56 but in-between
Then most likely a 3-48 (coarse) or 3-56 (fine). Not a common size anymore, but still available.
Leigh is right, of course. And it is also possible to use an extension lensboard or a telephoto design.
But a glance at the Chamonix website showed that the 8x10 has a maximum bellows extension...
On the assumption that 800mm is meant seriously, you need to play around with the focal length/magnification/image distance equations to see what will work on your camera. You might be surprised to...
Potassium dichromate is a strong oxidizer, and all of the "drying oils" used in traditional varnishes are strong reducing agents (cellulose is no slouch, either) so it is very unlikely that you are...
Since the OP used the phrase "for personal work" I will offer the following:
My local framing shop has a computerized mat cutter, and it is a joy to watch. However, I prefer "floating" mounts...
Since silver is well above every metal except gold in the electrochemical series, it will displace the others and they will be lost to corrosion products (nitrate, oxide, etc.)
The metal you found...
The Zone System today is a wasteful distraction
Possibly, once you fully understand it and have practiced it enough to be sure of that. As a step up from taking a light meter reading and exposing...
About three years ago, I bought a new Weston thermometer to replace the little 1" dial thermometer that I had always used. It was a while (months) before I put it to use, and discovered that while it...
Yes, anyone who is "comfortable" working with a fly cutter should probably find an inherently safer way to do the job. That is one reason why I favor mounting the workpiece to a piece of scrap which...
Sometimes fly cutting can produce a tapered hole if the area around or above the cutting tool can make contact with the cut area as it goes deeper through the material, so make a test cut first on a...
Yes, patience is often useful. With enough of it, good hand-eye coordination and either a round Swiss-pattern file or a Dremel tool, you could have opened up the hole to the head diameter of whatever...
I know that I have seen pinhole images made on photographic paper using a simple box camera mounted to a building or pole, and exposing for months.
Silver nitrate has been known since the 13th...
If you have a drill press and small enough fly cutter (I'm not familiar with these lenses, but you should be able to get down to something a bit over an inch in diameter) you can make snug fitting...
Steven,
I'm glad that it worked out.
If I had thought you might ream out the hole, I would have suggested not a step drill, but a #15 twist drill (0.180 nominal diameter) followed by a #13...
Steven,
The screw that you illustrated is slotted; socket-head cap screws were suggested because it is the side of the screw that forms the bearing surface in the camera situation, and the cap...
tonyowen:
Your question might appear to be afield from the original question but it is not, really; there is a matter of scale involved.
The screw in question is a 4-40, with a minor diameter...
I just went out to the garage and tried filing a couple of black-oxide finish socket head cap screws (a 2-56 and a 6-32) and a smooth mill file cut them just beautifully. However, YMMV.
With due...
Yup. Its right there in the first line. Seeing the picture I had understood that he was looking for a replacement for a replaced, but non-functional, screw. Darn.
But the head of a 4-40 fillister...
Jim Jones probably has the best answer. I just took a look at one of my CC-400 cameras, and it looks just like yours---except that the head of the screw is close to flush with the face of the lever....
Epoxy 2 part mix, outside surface of the graduate
Close, but not quite---fill the hole from the inside, and make sure that there are no crevices either inside or outside; since the pit may be...
Many stainless steels are susceptible to pitting corrosion (type 316 is specifically formulated to be resistant) which can be caused by any bit of more active metal (usually, iron) contacting it in a...
A few years ago I came into possession of some old negatives which had been stored in film cans since the 1950s; it was hard to unroll them far enough to see what they were, let alone scan or print...
John,
I wish I had seen this thread when it was current. If I understand your problem, you want something to fill the space between the components and sort of "key" them together--reversibly. The...
I have pointed this out a few times in the forums (and had it confirmed by others once or twice) so I will mention it again:
The softness is not only related to distance from the focal plane, but...
Peter,
I think that there is something to what you describe, but it seems that there is also an element of "working speed" versus format, in that the larger formats more or less force you to...
You mentioned the lens board size, but I hope that you are aware of the light-baffle grooving on the Calumet. I'm not familiar with the MPP board, so I don't know if they are actually...
The last couple of posts make a good point; some realistic thinking may be in order here.
Unless you are independently wealthy, you probably won't be climbing far on the learning curve while...