Contax G1 Lenses on a Sony Camera

I’ve been after one of these for ages but they’ve always been too expensive. But last week, thanks to a bit of eBay shenanigans I managed to pick one up for a really good price. What is it? I hear you ask. (actually I don’t. That’s not how web pages work). Anyhoo, its a Techart G-NEX TA-GA3. I’m surprised you didn’t recognise it.

It’s an interesting piece of kit. It lets you use lenses from a thirty year old film camera on your digital camera. The lenses in question were designed by Zeiss and made by Contax and they are really, really good. They are supposed to be used on the Contax G1 or G2. These cameras contain a little motor that turns the lens to focus it. The Techart contains a tiny motor along with a microcontroller that manages to convince the host camera that this is “just an ordinary lens guv”.

There are one or two issues. Not all auto-focussing modes are available, you have to set the aperture manually and the adapter makes amazing noises as it moves the lens mechanism back and forth. I popped a 28mm Contax lens onto it and we headed for the Humber Bridge to see what it can do. This time we went up onto the bridge deck to take some shots.

These pictures were taken with the lens wide open which is when the optics have to work the hardest. The images are super sharp in the middle of the frame and then that sharpness fades off a bit towards the edges. But the colour rendition is splendid and I’m very pleased with the results. I’m looking forward to taking more pictures with this setup. The only problem I’ve noticed is that the effort of moving a big metal lens seems to take its toll on the power source. The battery in the camera drained a lot faster than I’m used to.