Re: How to disassemble a Pentax Lens and put it together again

2001-05-11 Thread Todd Stanley
There is a notch that the lever slides into on the aperture ring, and there is no adjustments that I can see. I suppose you try filing out a new notch, but you'd have the problem of filling in the old one two (the notch is rather wide, so the old and new would likely overlap). Your results ar

Re: How to disassemble a Pentax Lens and put it together again

2001-05-11 Thread Chris Brogden
On Fri, 11 May 2001, Hugo V.A. Kok wrote: > Meterings are done with MX and MZ5n (both matrix- and spotmetering > tests done) Since the MX uses a center-weighted meter, why not use the 5n's center-weighted meter? chris - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to

Re: How to disassemble a Pentax Lens and put it together again

2001-05-11 Thread Hugo V.A. Kok
Hi, Thanks for all input - so too for the off list ones! although it was meant for brevities' sake that I wrote 'after ruling out all other explanations', I see now that it's a little awkward for everybody thinks up different causes. Sorry for that. Let me say that the observed phenomenon is NOT

Re: How to disassemble a Pentax Lens and put it together again

2001-05-11 Thread Bojidar Dimitrov
Recently Hugo Kok wrote: > > another question to check out the Pentax Data Base that is YOU. > Situation is: comparing three of my lenses with fixed aperture (let's > say: 5.6), the light meter gives on all three of them a different > exposure time. That is: 50mm OK, 85mm +1 stop, 135mm +1/2 sto

Re: How to disassemble a Pentax Lens and put it together again

2001-05-10 Thread Todd Stanley
What kind of lenses are these? If they are A series or newer I would suggest putting the lens into A and see if the results are the same, since when the lens is in A that lever is not used (the MZ-50 and MZ-30 are good examples of this). If the difference is still there then it's something to d

RE: How to disassemble a Pentax Lens and put it together again

2001-05-10 Thread Peifer, William [OCDUS]
Hugo wrote: > Situation is: comparing three of my lenses with fixed aperture (let's > say: 5.6), the light meter gives on all three of them a different > exposure time. That is: 50mm OK, 85mm +1 stop, 135mm +1/2 stop. > After extensive comparisons in which all possible other explanations > were ru

Re: How to disassemble a Pentax Lens and put it together again

2001-05-10 Thread CDCook1951
In a message dated 5/10/01 1:40:56 PM Eastern Daylight Time, [EMAIL PROTECTED] writes: comparing three of my lenses with fixed aperture (let's say: 5.6), the light meter gives on all three of them a different exposure time. Maybe it's just an estimate on the barrel. Could actually be more or l

How to disassemble a Pentax Lens and put it together again

2001-05-10 Thread Hugo Kok
Hi again, another question to check out the Pentax Data Base that is YOU. Situation is: comparing three of my lenses with fixed aperture (let's say: 5.6), the light meter gives on all three of them a different exposure time. That is: 50mm OK, 85mm +1 stop, 135mm +1/2 stop. After extensive compa