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MIRANDA LENS CLEANING


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A WHILE AGO someone sent me a page about cleaning miranda lenses

they tend to get oily diaphrams

could you send it again?

an hour's search yielded no results.

the part I really did not understand was how the 1,4 lens could be taken apart

with out messing up everything

I know the 1.8 and 1.9 lenes are easy

someone who is VERY knowledable told me the canon 1.4 ssc comes apart easily.

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I found riccardo who had fixed his miranda lenses.

but it was a long and difficult search thru my mail ,

but still suggestions will be gratefully read and even tried.

my eyes are not that good to do fine work,

 

and this seems a common problem for this brand of lenses.

I have talked to rick oleson and he has done this with other lenses and gave me some suggestions.

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Walter, if you dismantle the lens, mark it where the barrel separates from the threads. I don't remember the Miranda (I've had a Miranda 50mm apart some time ago), there's usually a couple different ways to thread the barrel back on. I just did this last week with a reflex lens for Minolta, and I couldn't get it to focus when on the wrong threads.

 

If I remember correctly, there were tiny screws right in the barrel that allowed me to open up the Miranda lens.

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the sensomat/sensorex 1.8 and 1.9 and the miranda D PAD 50mm 1.9 and the PAD 35mm f/2.8, are constructed in 2 groups, No screws at all.

I have such bad eyes that I coulkd not cope with that.

 

unscrew the frount group

place a soft rubber spatuala on the rear group after you rack the lens back to infinity. Unscrew that group.

 

Often the diaphram blades will be SO bad that they cannot move.

I swished mine in alcohol ( drinking type) and it loosened it up a bit.

I read that Lighter fluid will work ( naptha) but not charcoal lighter fluid.

 

i am sitting here with the mecahnical body of my Miranda D 35mm f/2.8 lens. this design it seems to be much simpler .

the 50mm lens I worked on 2 years ago focused properly after re-assembly

I was told that a Canon 50mm f/1.4 works the same way and it took him 15 minutes to fix a sticky lens.

wish me luck!

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