Friday Fotos! – Contax Crazy

April 4, 2025April 4, 2025Chris and Carol Leave a comment

My Contax RTS with a Contax RTW W-3 and Carl Zeiss Vario-Sonnar T* 28-70mm f/3.5-4.5 Macro Zoom lens.
www.ccstudio2380.com

The Carl Zeiss lens is super sharp, and the zoom range is perfect for my type of photography.

It’s not complete without the appropriate Contax overdesigned and oversized lens hood.

The original Contax RTS (Real Time System) is a joy to use. If you are looking for a classic 35mm SLR to add to your collection, look no further than the RTS.

Thanks for stopping by, Chris

Follow me on Instagram https://instagram.com/ccphotographyai

Facebook CC Photography of Amelia

Flickr Chasing Classic Cameras with Chris

Comments are always welcomed, as I’ve learned quite a bit from reader feedback. As always, thanks for stopping by, and while you’re at it, feel free to visit my camera shop at http://www.ccstudio2380.com (CC Design Studios hosted by Etsy). – Chris Whelan

Please respect that all content, including photos and text, is this blog’s property and its owner, Yashica Pentamatic Fanatic, Yashica Sailor Boy, Yashica Chris, Chasing Classic Cameras with Chris. Copyright © 2015-2025 Chasing Classic Cameras with Chris (Yashica Pentamatic Fanatic), Chris Whelan. All rights reserved.

Happy SUNday! – discovering the Contax RTS ‘Sci-Med’

January 21, 2024January 21, 2024Chris and Carol 2 Comments

Scientific/Medical ‘Sci-Med’ camera with a Real Time Winder both are from around 1977 or early 1978. No official documentation exists on this variant of the Contax-Yashica RTS (first model) released in 1975. It’s been referred to as the RTS ‘Fundus,’ but again, there needs to be a mention of why it was produced and for what purpose beyond the Sci-Med community to be able to accept that designation, in my opinion. Slight enhancements include a small raised collar around the sensitive magnetic shutter release button and a shutter speed lock button on the right side of the camera’s top plate (as viewed from the front). The shutter speed dial locks in the 1/60 position (electronic flash sync speed), and the button needs to be depressed to select another speed. The Real Time Winder was mated with this camera as they shared the curious ‘Registered Number U.S.A.’ sticker. Many unknowns exist about this limited production camera, and much misinformation is floating around. I hope to uncover some truths or, at the very least, present only factual info. If you have documentation concerning this Scientific/Medical version, please share it with me – advertisements, brochures, or mentions in the photographic press back in the day.

Most RTS cameras have degraded or peeled leatherette coverings as the adhesives and the slightly softer leather haven’t held up over the decades. This one has, for the most part. The RTS line (RTS, RTS II Quartz, and RTS III) all use lenses with the Contax/Yashica (C/Y) mount.

The Real Time Winder can shoot up to 2 frames per second (2 fps). Higher-speed motor drives and winders with speeds up to 5 fps were also available.

The JCII ‘Passed’ sticker is in a different position from where these stickers were usually placed on the RTS, which would be on the left side of the prism. I guess it was put here on the Sci-Med version because the ‘Registered’ sticker was placed on the prism (by the factory or the distributor?).

The baseplate is marked ‘Scientific / Medical’; otherwise, it’s not different from a standard RTS.

The registration numbers are different, but the winder and the camera body were together as a set when I purchased them.

Early magazine advertisement. Here, it incorrectly indicates that the Real Time Winder is capable of 2 1/2 fps. The manual has it at 2 fps.

Beautifully designed and highly functional.

The Contax-Yashica RTS, Real Time System, was jointly developed by Yashica and Carl Zeiss, with the design originating from Porsche. The camera features fully automatic through-the-lens electronic exposure control; select the proper film speed (ASA, ISO) and the desired aperture (f-stop), and the camera selects the appropriate shutter speed. It’s also a fully manual camera, with the user setting the shutter and aperture values. It was a camera I was initially interested in when I was looking to replace my first SLR, the Yashica TL Electro-X, in 1978 when I was stationed in the Navy in Japan. If I remember correctly, the Navy Exchange stores didn’t have a large selection of Contax cameras, so my choice quickly became the Canon F-1 over the Nikon F-2.

Here is my first Contax RTS, which isn’t the Sci-Med version.

I chose the Yashica ML 50mm f1.7 lens over the more expensive Zeiss T-Star (T*) lens.

Thanks for stopping by, Chris

Follow me on Instagram at @ccphotographyai

Contax RTS Serial Number(s)

January 18, 2024January 18, 2024Chris and Carol 3 Comments

In the Contax RTS instruction booklet, the baseplate pictured either has a “real” serial number or one “made up” by the marketing department. RTS models out in the wild don’t have a serial number that is easy to decode (date manufactured), but this one does, at least if you know how to read Yashica serial numbers. I interpret this SN as February 1975 (502), and its number is 166.

The original instruction booklet (dated 06/76) has an 8-digit SN.

My RTS baseplate has serial number 087024, which looks nothing like the serial number in the instructions.

Here is a baseplate from an RTS-Fundus Scientific / Medical camera. I see 091238. I don’t see a date code in there – do you?

Anyway, this is just a quick post to gather my thoughts. Do you own a Contax RTS first model? I’d like to see more serial numbers as a pattern may appear. Thanks for stopping by, Chris

Follow me on Instagram at @ccphotographyai

Brothers from different mothers – Contax RTS and Fujifilm X-T2

January 15, 2024January 15, 2024Chris and Carol 1 Comment

Brothers from different mothers – the classic Contax-Yashica RTS (original model) and the Fujifilm X-T2. I find the weight and feel to be the same, and many of the manual controls I use are right on top of the T2. That could be why I was attracted to the Fuji in the first place.
In the world of modern mirrorless digital cameras, the T2 just feels and acts like an old-school SLR.

The Fuji features a sharp Fujinon zoom lens, and the RTS has a fast and sharp f1.7 Yashica lens. I enjoy the aesthetics of both cameras, and I often shoot with the half-cases attached.

Fujifilm got it right when they designed their T2 (and similar models), drawing on the successful designs and functionality from the past.

A better view of the lenses. I chose the Yashica lens over the much more costly Planer lens because, let’s face it, Yashica made both (maybe from a Tomioka design in collaboration with Zeiss). The famous T* coatings may be missing on the Yashica, but I doubt it. The T* mainly was a marketing exercise. Full disclosure – I’d take the Zeiss Planer in a heartbeat if money were no object.

I enjoy using my Fuji; it is my go-to camera whenever I shoot with my classic lens collection or when I need to test a lens before listing it in my Etsy shop or on eBay. It’s fast and easy, and the APS-C sensor has a 1.5 crop factor that “boosts” the focal length of every lens I use. See yesterday’s gorgeous 450mm shot below from my 300mm Nikkor-H lens.

Boeing 777 (likely) at over 30,000 feet over northeast Florida (not cropped).

Thanks for stopping by, Chris. Which is your favorite mirrorless camera? Are you a Canon or Nikon photographer? Has anyone tried the new Nikon Z cameras?

Follow me on Instagram at @ccphotographyai

New items in my Camera Shop for September

September 13, 2021September 13, 2021Chris and Carol Leave a comment

Hello and thanks for stopping by! I’ve added some really unique and rare items in my online Camera Shop which is hosted by Etsy at http://www.ccstudio2380.com

Lots more to see at http://www.ccstudio2380.com

Comments are always welcomed as I’ve learned quite a bit from reader feedback. As always, thanks for stopping by and while you’re at it, feel free to visit my camera shop at http://www.ccstudio2380.com (CC Design Studios hosted by Etsy). – Chris Whelan

Please respect that all content, including photos and text, are the property of this blog and its owner, Yashica Pentamatic Fanatic, Yashica Sailor Boy, Yashica Chris, Chasing Classic Cameras with Chris.

Contax RTS by Fujifilm X-A10

July 29, 2021July 29, 2021Chris and Carol Leave a comment

I haven’t used my Fujifilm X-A10 mirrorless camera in a bit so tonight I thought I would dust it off (only an expression as I keep my gear clean) and try some new settings. The lens is a Super EBC XC 16-50mm f3.5-5.6 OIS II model which I believe is considered a kit lens. I did buy the body and lens separate though. It’s about the most inexpensive way to experience the Fujifilm X Series without breaking the bank. You can check it out in greater detail here.

My subject of the day is my recently acquired Contax RTS with it’s sexy new leather half-case from TP Original, color is “volcano”.

PROVIA film simulation mode, shallow depth of field, 5600K studio lighting.

Shallow depth of field (again) focused on the from of the Yashica lens. Black & White film simulation mode, 5600K studio lighting.

I use the Fujifilm mostly for testing vintage lenses by using the appropriate adapters to mount the lens to the mirrorless camera body.

Here’s my Canon FD 28mm f3.5 lens mounted to the Fujifilm X-A10 using an adapter from Fotodiox.

Since I take lots of images for my listings in my camera shop I believe I’ll go back to using this camera and take a break from the camera I normally use. (Fujifilm FinePix S9900W)

Final image. This time I focused on the CONTAX logo and the shallow depth of field throws off the focus on the front of the lens and the RTS. Maybe only the “TAX” is in true focus.

If you’re looking for a simple and potentially inexpensive mirrorless body than I highly recommend this camera from Fujifilm.

All dressed and ready to go! – Contax RTS

July 20, 2021July 20, 2021Chris and Carol Leave a comment

The finishing touch. A custom real leather half-case from TP Original. I purchased mine through Martin Duke Shop on Etsy. The quality of the materials and craftmanship is outstanding. The color is volcano.

Nice sized leather case adds a good layer of protection.

From TP Original, custom made leather half-case. It comes with two tripod mount retainer screws too.

I like shooting with a half-case installed on the camera. It gives me just the right amount of additional grip and provides a nice protective layer to prevent damage. The bottom is perfectly flat and the little bump out helps to balance the body better with a normal or wide angle lens attached.

Contax RTS – an old dog gets new life

July 19, 2021July 19, 2021Chris and Carol Leave a comment

My Contax RTS (Real Time System) 35mm SLR camera with its new “skins”. These cameras which were first released back in 1975 are notorious for shedding their original factory applied coverings. If you search online selling sites you’ll find plenty of these cameras for sale but very few have their leatherette covers still attached as they tend to peel away from the metal bodies and shrink (dry out) over time. The good news is that the old coverings are a breeze to remove and there’s a wide selection of aftermarket replacement options to choose from. Black is no longer the only color as bold colors like red, blue, and even green have become popular and textures like lizard skin to well, whatever you think you may like. I wanted to stay with the more traditional look and feel so I went with recycled leather from Hugo Studio’s Custom Camera Covers (hugostudio.com).

The previous owner of my RTS had attempted to reattach the original leatherette with some type of contact adhesive but even that failed over time. Yashica’s choice of coverings just didn’t stand the test of time no matter how they were reattached.

While waiting for the new coverings to arrive I added a new to me Yashica ML 50mm f1.7 lens which I was able to chase down in near mint condition. I went with the Yashica made (likely Tomioka-Zeiss) f1.7 based solely on cost. The original Carl Zeiss designed glass for the RTS is way out of my comfort zone pricewise so I went with what I know. Besides, both lenses were made in Japan probably on the same factory line by Yashica anyway.

This would be the standard lens that would have been on the RTS. Here is an empty box that I found for sale on an auction site with everything but the lens. A nice find for any serious collector (and if I had the lens I would buy this in a second).

Here’s a nice Zeiss lens kit that sold recently from a seller in Japan for around $280.

So there it is. Recovered and looking much better. Now to recover the data back so everything matches.

Contax Data Back for the original RTS with it’s slightly detached leatherette.

Contax RTS Data Back

July 7, 2021July 7, 2021Chris and Carol Leave a comment

I like collecting data backs for my 1970s 35mm SLR cameras because they were such a hot item when new. The idea of recording information on your image was kind of a novel idea back then and adding the date the image was taken could be useful. Do you want to know how many images I took back then with the date imprinted? Zero. Back in the 1970s and ’80s data backs were really expensive and money spent on one could be better spent on another lens or a year’s worth of film. But they’re fun to collect now and I have one for my Canon F-1, Canon A-1 and I had one for a Canon T-70 that I owned.

I thought adding a Contax Data Back for my RTS would add to its classic look. Notice that the first year that could be imprinted was 1975 and on this model of the data back it went up to 1993.

The good news is that this data back is fully working. It takes the same battery as the camera which is handy (A544 6V).

The back is covered in the same material as the RTS body which means it’s slowly peeling off just like 99% of all the rest. I may try and save the skin on this one since it’s only lifting around the Contax label ATM.

I imagine quite a bit of engineering went into designing these backs which explains why they were so expensive when new. This one came with its original box but no instruction booklet. Time to chase one down.

The data back pictured here will only work on the original RTS and not the RTS II or III. The Yashica branded back for the FR is very close in design but it’s not interchangeable with the Contax.

Contax RTS – getting it right

July 4, 2021July 7, 2021Chris and Carol Leave a comment

My recently acquired RTS stripped of its faulty skins. It’s a blank canvas and I like the look for now. The mirror is locked in the up position (the little lever to the right of the lens mount).

This scan (below) is from a Yashica marketing brochure from early 1975. There’s been so much misinformation about the origins of the RTS that I thought it would be best to go to the source to get the facts straight.

Lots of flowing marketing speak in there but it delivers with no uncertainties who did what and why. The when isn’t mentioned but many of the pictures inside this brochure are from mid 1974 based on the cameras, lenses, and accessories pictured (not just the RTS stuff). It’s generally believed that the initial talks between Yashica and Zeiss started as early as 1971. I might mention that this was an extremely challenging time financially and structurally for Yashica with some accounting and management issues reported in the global press which led to a bit of a scandal of epic proportions for Yashica’s founder(s).