Does anyone know how to seperate this aperture section from the front section? It looks like there is one large piece holding everything together and I can not see anywhere to unscrew them....czj 35/2.4
Hey, well, I found a CZJ 35/2.4 at a thrift store for 25 bucks
I have dissassembled it..mostly. It is a bit different from the popular dissassemble links. I think because mine has a lower serial number, despite also having the red MC.
At any rate, its bassically totally apart now, just working on seperating the front element from the aperture and praying I can get it back together and not have focus issues....
But, one of the links said to clean off the grease, etc, then to reapply grease.
I have Silicon lubricant....do you think using a q tip, dipping it, drying it slightly, then running this around the threads will work, or is it a bad idea for some reason?
Don't use silicone lube. That way your focus ring will have hardly any resistance. Lithium grease is usually used in these older lenses. You can get it at an autoshop.
Hey, thanks propellor....I actually was just posting that I finished!
I ended up going with White lithium grease, it has a little more viscosity than desired...I probably should have gotten the 10 dollar bottle instead of the 3.5 dollar bottle...ugh...I knew it, but it still works!
I finally finished reassembly last night, after about 10 grueling hours of hands on, plus many mor of soaking and actuating the aperture, but then I found one slight problem.
There was a little tiny, almost invisible, spring with an even smaller ball (supposed to be anyway) on it. I saw the ball rolling around when I first opened it and saved it. It turns out that without the ball and spring the A-M ring would not stay locked into manual, leaving me without aperture control anyway!
Tonight, after a little while of working with it, I figured out how it worked, and got some old epoxy glue (200 degree operating temp) and mixed it, dabbed it on the ball and the tip of the spring and let it cure for an hour. Now it works perfectly, other than the slightly high viscosity of grease.
Man, it was tough. I have the f2.4-f16 model, and all the disassembly how tos I found were for the f22 model. I will post pictures of what I have just to help anyone else out, but they will not be good. I did not take picture for a how to...it was stressfull enough just trying to figure it out, as I have never had to do anything like this before and it was MUCH more difficult than the design posted on the how to videos I saw-a whole series of springs, etc had to be removed, much more complicated aperture actuation system....
but maybe someone will get a little something from it. Will add to my older thread comparing the Canon 50mm 1.4 to the Kit lens with this Zeiss in a few days.
Oh, and whoever said the Nex doesnt have enough lenses available?
Canon 28mm 2.8, Canon 135 2.8, Canon 50mm 1.4, Carl Zeiss 35mm 2.4, all for $175 plus 30 dollars adapters. Is there any APS-C sensor based mirrored DSLR that can achieve that type of optical quality for that price? I have no idea, but it sure makes me feel good thinking no. I mean, if they use these, they have much more expensive adapters or the flange distance is incorrect right?
I absolutly love the Nex though, just fantastic...I still need to sell my Canon 28mm and AE-1 to bring that price down a little bit though.
