Sticky slow speeds on Hassy C lenses

[pdccamerqs]

HI all,

I have two Hasselblad chrome C lenses with sticky slow speeds. They both stick on the low speeds 1/4, 1/2, 1 sec when mounted on the camera (a 500 c/m). They seem to do fine if the shutter is cocked and fired off camera. I have two other lenses, an 80mm C (black T*) and a 250mm C (chrome) which work fine on the camera, so, I am pretty sure this is an issue with the two problematic lenses -perhaps a weak spring?

The lenses are both chrome versions, one is a 50mm f/4 Distagon C and the other is the 150mm f/4 Sonnar C. Neither has been serviced in the last 10 years or so, so could also be built up gunk, I imagine, and a CLA is most likely in order. ;-)

Has anyone encountered this issue which shows up ONLY when the lens is mounted on the camera?

Thanks in advance for any light you can shed on the problem?

All the best,

Paul

 

[Sirius Glass]

I have been though this before. Have a CLA done one each lens by a Hasselblad repair person. Then every three months, remove the film back from the camera, mount each lens, set the time to 1 second, the smallest f/stop, and cock and shoot between 10 to 15 times. I have been told by my Hasselblad repair man to do that and it will help prevent the problem you have.

 

[eli griggs]

Sticking aka slow shutter in well documented and online, in many videos and, as long as you are methodical in your approach, and in reassembly, and, don't remove All the screws, you should be just fine.

Spend lots of time practicing each step, in order, to including cleaning, lubricating and assembling and testing, you can do it just fine.

IMO.

 

[pdccamerqs]

Thanks for the help and tips Sirius and Eli! I am very familiar with sticky shutters, I was just thrown off by the fact that the shutters seem to work fine off camera, but then stick when mounted to the camera. I'm glad to hear that it's common.

Best,

Paul

 

[eli griggs]

Thanks for the help and tips Sirius and Eli! I am very familiar with sticky shutters, I was just thrown off by the fact that the shutters seem to work fine off camera, but then stick when mounted to the camera. I'm glad to hear that it's common.

Best,

Paul

In my experience, slow shutter speeds are one of the first five mechanism failures of the "V" series lens and cameras.

Use first quality drives, other tools, etc., source points and practices.

Cheers.