Hi. I unscrewed the front lensgroup from my Yashica A in order to clean it, and made sure that it was completely screwed back in again. Can doing this affect the focus of the lens?
Yashica A Front Lens Group
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- Thread starter George Mann
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It should be ok if you are sure it is in all the way.
Just a couple months ago I was perplexed at a roll of film from a Yashica 35mm with all the images out of sharp focus. What the heck? I could not detect any problem with any of my Yashica 35mm bodies.
Then, for no particular reason, I was inspecting a Yashica lens and I thought the front element might be sticking out a little. Wouldn't you know, that lens element could be rotated a whole turn before stopping. After screwing it in, I un-screwed it and put it on a camera body to see if that was the issue, and indeed just one rotation out made the lens un-useable.
Just a couple months ago I was perplexed at a roll of film from a Yashica 35mm with all the images out of sharp focus. What the heck? I could not detect any problem with any of my Yashica 35mm bodies.
Then, for no particular reason, I was inspecting a Yashica lens and I thought the front element might be sticking out a little. Wouldn't you know, that lens element could be rotated a whole turn before stopping. After screwing it in, I un-screwed it and put it on a camera body to see if that was the issue, and indeed just one rotation out made the lens un-useable.
Even though I don't know Yashica, that shouldn't be a problem. There is obviously a screw thread for the optical unit and this ensures the correct position of the unit in the tube. I also assume that the lenses in the optical unit each are designed the same way, so it shouldn't matter how they are inserted as long as the front and back are not swapped. Of course the order has to be right too.
I didn't remove the individual elements as the only cleaning needed was to remove dust and light haze from the elements facing the shutter assembly.
This is a very clean camera that is in perfect working order (with mirror replacement).
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