I have made shutter blades for larger shutters. I used shim stock and did not reharden after cutting. Worked fine but was painstaking to get the holes or pins exactly positioned. Making a #00 blade...
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I have made shutter blades for larger shutters. I used shim stock and did not reharden after cutting. Worked fine but was painstaking to get the holes or pins exactly positioned. Making a #00 blade...
Greg's advice is good. I have had to do exactly the same thing. Also, sometimes I have succeeded with a seized recessed screw by applying tiny drops of acetone from a toothpick at intervals of about...
Hit and miss lens design was common in the 19th century and early 20th century. Mathematically based design is of course better - but there was a time before the math was well worked out and before...
There is a service in the Ukraine that resurfaces and recoats lenses. Search "Lens recoating" on E-bay or kievcameraorg.
I've reground and polished photographic lenses to remove deep scratches...
I have serviced large format lenses professionally in the past. For the occasional stuck lens cell I use thick rubber grip gloves. These give me good purchase on the shutter body as well as the cell....
Good find - thanks!
Museum professionals typically work to standards, as mentioned in this thread. Understanding the goals one is trying to achieve and establishing a standard to meets those goals consistently is key to...
Thanks Greg. I discontinued professionally servicing shutters some time ago. I very much enjoyed working on your shutters. Bill
Yup - works great. I bought an old Bowens Illumitran, placed the base unit on a copy stand with a Nikon D810, a bellows and a 75mm Rodagon D 1:1. The results are excellent for digitizing 35mm slides...
Cut two pieces of wood a bit bigger than the filter and flange. Glue pieces of rubber inner tube to the boards. Place the stuck filter and ring between the boards - rubber side to the parts, press...
Yes - in small aircraft vibration and buffeting is by far the major factor. From a Cessna I've found it easy to pan to compensate for the general motion of the plane but only a high shutter speed,...
I've done quite a bit of aerial photography, albeit all digital. There are a few things I've learned that you may find helpful.
1) Normal to short telephoto lenses may be the most useful. Except...
Apparently the HP z3200 printer can be used to print digital negatives. I have not done this so I cannot comment on the quality of the results. I have not had time to trace the links for this but a...
Just letting everyone know that I'm discontinuing my shutter service. My work as a visual artist/photographer and a museum consultant has expanded so, sadly, I've had to wind this up. Special thanks...
I've done several repairs using a 6-32 tap, and the result provides a secure socket for the cable release. To try for a better result, I did one with a #4 tapping hole and tapped it 4-40. Then I...
Here is the exploded diagram.89938
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I've attached the Copal #1 exploded diagram and photos of the difficult spots. I have additional images. Let me know if there is another section for which you need the image....
I used a 150mm uncoated Tessar in an old dial Compur shutter for awhile before I could afford a "good" modern normal lens for 4x5. Interesting thing is that I could not easily tell the Tessar frames...
Martin,
I use a z3200ps. Problems do corp up - but I don't think more so with the HP than with other large printers. Mine "blew" a red print head and I had to clean a considerable mess out of the...
I use insulated lunch bags from the dollar store. They are nicely padded and don't shed lint like whiskey bags do. I choose the "professional looking" green ones but you can have Superman or Batman...
I got a z3100 24 inch about a year after they came out and I've had a z3200 44" for about two years. Each machine has had one significant repair, the z3100 had a drive issue quite awhile after I sold...
Rick,
I recently came upon your website while researching something about Kiev cameras. Several of the images really stuck with me, especially Juneau Waterfront and Salisbury Ceiling. I appreciate...
Andrew,
Ilex shutters are pretty simple and should not slow down a shutter technician even if they arrive as a bag of parts. I've seen a number of shutters come in that way. Have the technician...
Have a looks at Surplus Shed as well for Achromats.
http://www.surplusshed.com/pages/category/objectivelenses_3.html
Achromats are very sharp on axis - typically diffraction limited. They...
Steve,
You can replace the parts with no worries. Just use a properly sized, good quality screwdriver when working on the small screws that hold the parts in place.
Bill
Roger,
Lenses with a central diaphragm compress the diameter of the beam of light flowing through the lens. Thus the physical aperture in the lens is smaller in diameter than the simple f/d formula...
Thank you!
I second the opinions about being cautious in the use of cut down roll paper in the Epson 38xx. The Epson is subject to head strikes if the paper isn't flat enough, and/or it seems if the room...
Ivan is correct - in both his posts.
Every time image information is transferred there is some level of "generation loss". I learned this years ago when I first saw the studio master print of a...
Jeremy is right. I'd be surprised if this doesn't solve the problem. I've done this service and it needs about an hour of technician time. I seem to recall that Imacon/Hasselblad supplied a kit with...
I solved the problem of the Aero Ektar not fitting through the Graphic's standards by machining down the diameter of the rear cell. The attached photos show the mounting job I did for a client who...
To ease the bellows draw, consider an extended lensboard. I've used a 305mm Apo Nikkor on an extended board on a Wista and the combination worked very well. It was necessary to line the tube of the...
Yes - provided the copy area isn't too large the Tominon will cover. Lenses will typically cover much more at near focus than at infinity. Run a test with the largest piece of copy you expect to...
Use a good frame pack - internal or external. Collapse the CC-400 to the middle of its rail and drop it upside down in the top of the pack. Let the rail stick out the sides and pull the top flap over...
Noah,
Once a shutter starts to go, it is really unpredictable when it will get worse. With a new shutter you eliminate this risk.
Copals are consistent in spacing so a new one will accept your...
Ari,
Yes - a ding like that has got to be disheartening. Fortunately it was a wood floor. From the photo it looks like if repaired by a pro the ding will come out and filters will work. With a heavy...
Greg,
Thank you! It is always a delight to work on your optics. You have found some real gems - the best of the best classic lenses.
Cheers,
Bill
Thank you for the advice - good idea. I also got a PM asking if I did Rolleiflexes and other TLR's. For these I recommend using one of the Rollei specialists in the US who does these cameras all the...
Occasionally I get a request to recalibrate a classic shutter to the modern speed sequence. This can usually be done, thought the design of some classic shutters sometimes means that not all of the...
Assuming you keep the lens, depending upon the amount of damage, the surface smear/scuffs may have little actual effect on actual images. The main risk is that flare will be increased and/or the...