Discussion Forum for various Lenses of different major labels in a shared environment at Photography In Malaysia

1. From : rick oleson (rick_oleson@yahoo.com)
Url : http://rick_oleson.tripod.com
Date : 12:24 PM Monday 13 October, 2008

Hi Jane:

Micro-Tools has replacement battery covers for the AE1, I believe this fits the AE1 Program as well. The link is

http://www.micro-tools.com/store/item_detail.aspx?ItemCode=CF1-1489

To remove the old cover, open it and grip the hinge pin with pliers, and push it upwards until the bottom end comes free.

2. From : Jane Doe (backnblack6@aol.com)
Url : http://
Date : 09:30 AM Monday 13 October, 2008

Hi, I have a few questions. I have a Canon AE-1 Program 35mm and was wondering where I might find a replacement battery cover for it? Mine is chipped and will not close. Not only that, but the whole left side is missing as well (I bought it used).

It doesnt affect performance to be missing piece, but annoying to have to keep taping closed. Also, what price range would this whole piece be? And does it come in one piece or two? Thanks!

3. From : rick oleson (rick_oleson@yahoo.com)
Url : http://rick_oleson.tripod.com
Date : 10:51 AM Thursday 09 October, 2008

Hi Dan:

I really can't think why they put that ring on there either. It provides a small degree of protection to the rear element of the lens, but they never worried about that with the 35/2.8 Biogon which bulged out even further in the rear. I'll just accept it as one of the Many Great Mysteries of Zeiss.

4. From : Dan (plaubel67w@gmail.com)
Url : http://
Date : 06:06 PM Wednesday 08 October, 2008

Thanks, Rick. In fact, I spent some time last evening looking at this carefully. I pulled the back, set the shutter to T, and carefully mounted the lens. It's interesting how Zeiss designed the the ring-with-ears, because on each side of the ring, directly opposite each other, is a small red dot. You line up the red dot on the ring with the larger red dot that you use when aligning to mount the lens, and that ensure that the ring-with-ears if precisely rotated to a position that ensures the ears do not his the lens chamber when you mount the lens. Once in place, the ears will attempt to rotate along with the lens when you focus, but they will turn only so far before contacting the lower and upper parts of the lens chamber. I was concerned that the ring might bind on the lens and so not rotate, but once in place it seemed to permit the lens to focus without greatly increasing the drag. So it does seem to be a part of the design. I'm left wondering why Zeiss thought it necessary to have the ring-with-ears there at all, since it seems to serve no useful purpose other than to make the lens more difficult to mount!

FYI, I also have the new Voigtlander 25mm lens for my Nikon S2, so it will be interesting to see how the two compare.

I greatly appreciate your advice and counsel. Dan

5. From : rick oleson (rick_oleson@yahoo.com)
Url : http://rick_oleson.tripod.com
Date : 11:54 AM Wednesday 08 October, 2008

Hi Dan:

All postwar Contaxes (IIa and IIIa, black and color dial) have that internal obstruction with deep lenses. I've never been lucky enough to have the 21mm lens, but I can only assume that the ring-with-ears is supposed to slip on the lens as it rotates in focusing so that it will not cause any problems in use. If yours does not allow the lens to move freely for focusing, the lens may need cleaning and relubrication.

6. From : rick oleson (rick_oleson@yahoo.com)
Url : http://
Date : 11:50 AM Wednesday 08 October, 2008

Thanks very much, Paul! I'm sure your posted message has caught their attention, but I'll drop a note just to be sure.

7. From : Dan (plaubel67w@gmail.com)
Url : http://
Date : 07:15 PM Tuesday 07 October, 2008

Hello everyone. I just bought two items: a 21mm Carl Zeiss Biogon RF lens (from the '50's), and a Contax IIa camera Black Dial. I went to mount the lens on the camera and found that the ring-with-ears metal bit that surrounds the rear lens element rotates, and has to be set in a precise position so that the lens can be fully inserted into the camera. Then, when I focus the camera, the rear of the lens rotates, and so therefore does the ring-with-ears, and the ears hit the bottom and top of the lens chamber. I need to know if this the way it should be. I'd find it hard to understand why Zeiss would design things that way, but perhaps the Black Dial preceded the production of the CZ Biogon. I can use the lens without problem in my Nikon S2, so all is not lost. Should I just put the lens on my Contax IIa and let the ears hit, and the ring-with-ears will rotate around the lens as it rotates in focusing? Thanks for any and all advice on this.

8. From : Paul (paul@cogitech.ca)
Url : http://
Date : 04:53 AM Tuesday 07 October, 2008

Try as I may, I cannot seem to get in touch with any of the people who maintain the data on the OM Zuiko lenses on this website, so I am posting here as a last resort.

I own an ultra-rare OM Zuiko MC 24-40mm f4 lens and I am more than willing to provide photos, measurements, specifications, and lens digrams, to be included in this website.

If anyone who maintains this website is interested, please let me know.

All the best,

Paul

9. From : Rick Oleson (rick_oleson@yahoo.com)
Url : http://rick_oleson.tripod.com
Date : 07:17 AM Friday 03 October, 2008

Hi Jason:

Welcome to the wonderful world of Zeiss! Before WWII, all Carl Zeiss lenses were made in Jena, and marked "Carl Zeiss Jena". After the war when the country was split in two, Zeiss was split as well. In East Germany, the Carl Zeiss Jena facility continued operation with the same lens markings. In West Germany, a new lens plant was opened in Oberkochen. At first, the "Carl Zeiss" name belonged to the Jena group, so West German lenses were marked "Zeiss-Opton". Later, legal action gave the Carl Zeiss name to the West Germans, after which the Western lenses were marked simply "Carl Zeiss", and the Eastern lenses were marked "aus Jena". Happily, since the reunification of Germany, Carl Zeiss is all one family again.

The "pimple" on a Contax I is a bump on the front at the center of the focusing wheel.

10. From : jason (shy@question.com)
Url : http://
Date : 10:09 PM Thursday 02 October, 2008

Can I ask what is the difference between Opton-Zeiss and a Zeiss Jena lens ? 2nd Q (asked at another forum) earlier: What is that "pimple" on the Contax Ia ? I have found one related thing at cameraquest but it mentioned without any ilustrations and I see no difference from other Contax I except the shutter ring is different.

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