This is a Takumar, but you can see the 3 screws. On this
lens just the beauty ring needs removing to access them.
The A Series doesn't have a beauty ring so the front
might be held by grubsrews into the body.

http://retinarescue.com/pentax50mmf1.4.html

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I've never taken a Pentax-A 35mm 2.8 lens apart, but normally
when you remove the front, there are 3 small grubcrews that grip
the focusing ring. It sounds like they have worked loose and
just need tightening...... should only take about 10 mins.

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There must be something wrong with it for that price
It's at least £100 less than it's worth

There seems to be a fairly serious bug in the Pentax software...... why am I surprised no ones noticed it (unless it's part of the SDHC specification)..... You tick a box in the menu for it to remember the file no. and it does until you put in a card that has a higher file number and even if the prefix letters are different (something like Nikon1001.jpg) it will go 1 number higher, but with the Pentax prefix. It's a pain if your using two cameras and even worse with an Eye-Fi Card which you can't reformat, because it contains programs used by Eye-Fi.

I've got some files on my PC where the same numbers have been used about 4 times

What I do now is start again from 0001.jpg preceded by a letter A B C D E etc which is preceded by the camera name _K5 so the new file will start _K5B0001.JPG I then try to keep other files off that card. My next sequence will start with _K5C0001.JPG

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The Range stock all kinds of mounting materials.

All good, but I like the waterfall the best

How much was it?

The Lithium batteries were brought out around the time that the
ME and MX were released. Silver had rocketed to a sky high price
and they were a cheap alternative for some cameras, but not
recommended for Pentax. One of the cameras (ME or MX) was
supplied with Alkaline batteries. It says so in the manual.

Strangely when silver came back down in price they started to
charge more for Litium, because of the greater capacity.

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I bet the people who bought Samsung 12-24mm's from Dixons for
£199 are still laughing!

The same lens with a Pentax badge is currently £739 at SRS



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Quite a lot of people bought GX20's when they were being sold
off by the likes of Jacobs for £300 3 1/2 years ago and almost
got there money back 3 years later when they sold them as SH

SRS are currently selling K20D's on ebay for £229
A GX-20 would only be slightly cheaper.