Monday, July 19, 2010

Stereo Cameras

There seems to be a serious lack of information on stereo cameras on the internet. There is a lot of technical information available, but little discussion about the pros and cons each and how most cameras have held up over time.

Here are some sites that are out there already:

Stereoscopy.com has a lot of technical information, but no opinions or discussion about pros and cons.
Photo-3d.com has pictures but no reviews.
This site discusses different types of stereo photography. I am focused on a twin lens camera.
This site has a few reviews, though the picture links are broken.
The Rise of the Stereo Realist - is in the mold of the type of site I was looking for.

Here is what I've been able to learn:
  1. Kodak Stereo - Most have shutter problems - the speeds stick and even when working the two shutters can fire at different speeds, producing
  2. Realist 3.5 - This I've actually held. Seems ergonomically weird. The viewfinder is on the bottom, the focus dial is on the side and the shutter release is on the top. The Realist 2.8 was essentially the same camera with better lenses.
  3. Realist 45 (or Iloca Stereo Rapid) - Supposedly easy to use but no rangefinder. Bottom viewfinder.
  4. Revere 33 - Has a bubble level in the viewfinder, but the viewfinder is apparently small and the rangefinder is seperate. Supposedly the hotshoe is "not standard." I've seen it described both as delicate and built like a tank. Perhaps the external is solid, but the internals are delicate?
  5. Wollensak 10 - A upmarket Revere 33 with top quality lenses.
  6. Stereo Graphic - Two shutter speeds and fixed focus.
  7. TDC Colorist II - Normal hotshoe and integrated rangefinder, but no bubble level. Aperture grease can supposedly get gunked up. The Colorist I has no rangefinder.
  8. Wirgin Stereo (Edixa IA) - No rangefinder and cold shoe. Issues with light leaks have been mentioned.

Based on what I've seen, I've narrowed it down to the Revere 33 or the Colorist II. Both have 35/3.5, 3 element Cooke-triplet lenses:  Revere's Wollensack Amaton and the Colorist's Rodenstock Trinar lenses. I'm not sure if one is better than the other. Both were good brands.


Saturday, July 10, 2010

Price List - Post 1950, Zeiss Ikon 120 Folders

I like the Zeiss line of folders because their bellows tend to be still light tight, unlike the Agfa ones. The models below are the later models produced after 1950, where the viewfinder is integral to the top plate: so they all basically look like the photo below. The advantage that these have is that it has an accessory shoe, so you can mount an external rangefinder and/or a light meter.



The body of the cameras are the same, while the difference is the lens/shutter combination. The Novar is a 3-element lens, while the Tessar has 4 elements. All have coated lenses.

Models that have a number XXX/2 are 6x9 format, while XXX/16 are 6x6. I don't know why

Nettar - The least expensive model came with a 4 speed Vario shutter and a Novar f/6.3. Other slightly more expensive models came with a 6 speed Pronto shutter and a Novar f/4.5.
Ikonta and Ikonta M - The Ikonta M had a uncoupled rangefinder, while others are scale focus only. Ikontas with Novars were often places with Prontor-S shutters while Tessars had Compur-Rapid shutters. The primary difference is that the Compur has a top shutter speed of 1/500, while the Prontor has a top speed of 1/250.

The prices are sourced from eBay auctions and Classified sales. One thing to note is that an eBay sale price is the price willing to be paid by the second bidder. If someone bids the $100 and I win with a $150 bid, my sale price is $101, but in actuality, the value of the item is the price I would be willing to pay ($150).

Updated (Nov 2, 2010)

6x9:
Nettar 517/2 with Novar 105/6.3 - $35
Ikonta 523/2 with Novar 105/3.5 - $80
Ikonta 523/2 with Tessar 105/3.5 - $210
Ikonta M 524/2 with Novar 105/3.5 $115-$130
Ikonta M 524/2 with Tessar 105/3.5 - $230 - $420

6x6:
Nettar 517/16 with Novar 75/6.3 - $20-$25
Nettar 518/16 with Novar 75/4.5 - $20-$30
Ikonta 523/16 with Novar 75/3.5 - $50
Ikonta 523/16 with Tessar 75/3.5 - $110
Ikonta M 524/16 with Novar 75/3.5 - $75 - $185
Ikonta M 524/16 with Tessar 75/3.5 - $250

Super Ikonta III (531/16) (6x6 coupled RF) with Novar 75/3.5 -  $125-$150
Super Ikonta III (531/16) (6x6 coupled RF) with Tessar 75/3.5 - $275-$300