Y/C mount accessories include various extension tubes and a nice bellows system with focusing rail and slide copying unit. (I used to own a similar unit for my Minolta X-700 camera). I am now waiting these to arrive from ebay sellers.
In addition to the lens and lens accessories, other camera body accessories include:
- Camera Cable Release
- Infrared controller
- Right Angle Finder
For more information about these and more, see: http://www.mir.com.my/rb/photography/hardwares/classics/contax/shared/
Regarding the winders, these are useful in stereo if you want to advance quickly, as in the case of taking hyperstereos from an airplane or other moving platform but even when time is not a problem but you don’t want to remove your eye from the viewfinder and risk misalignment between the shots. Also, in a remote picture-taking situation. I have acquired 3 winders: Yashica FX Winder (came with the Ochotta FX-D camera), Yashica FX 103 Winder ($20 new in ebay) and Contax 139 winder II. All these are very similar and interchangeable. It is interesting that the Ochotta FX-D stereo camera will take a winder (advances in correct 1-3-1-3 sequence, while the Ochotta 103 will not (no opening for the winder connections at the bottom).
I have acquired several cable releases and the Contax Infrared Controller S. This controller allows you to fire the camera wirelessly from a distance. It is useful for remote nature photography. I can use this device to any of the 2d and 3d yashica cameras. It works beautifully. Even though the cameras (2d and 3d) have timers, many times it is better to fire them on will and a wireless system is the least intrusive.
The picture above is the front cover of the Infrared Controller. It shows a Contax RST camera with a winder and the Controller. There are two parts: The receiver and transmitter. The receiver sits at the top of the camera's flash shoe (the Ochotta stereo cameras has two shoes so there is room for both a flash and the wireless receiver. The transmitter is held by the operator. Pressing the transmitter’s button will fire the camera.