Sylwester, I purchased a General brand K-mount-to-screw adapter from B&H Photo several years ago. I found the construction to be as Maciej has described below... and I also found that it would not focus at infinity. In this case, a simple telephone call was all that was required to have B&H credit the purchase price (and the postage costs) to a new one of Pentax manufacture. I can also surmise that this may cause a problem, especially with those photo dealers that may be a bit "less reputable" than B&H.
Currently, I have two of the Pentax adapters. I use them quite frequently, on both my K2DMDs and my LXs, with my 500mm and 1000mm Takumar lenses. They function well and provide excellent results. Best, Lance > ------------------------------ > > Date: Sat, 27 Apr 2002 15:05:07 +0200 > From: "Maciej Marchlewski" <[EMAIL PROTECTED]> > Subject: Odp: Re: More on M42->P/K converters > > From what I know, Pentax K -> M42 adapter is made only in one > version and this one allows to focus on infinity so Lukasz can > buy it safely. > But there are many adapters from small workshops on the market. > Some of the don't allow to focus on infinity not because od > workmansship failure but because of different design. They look > like the Pentax adapter wit a ring added that covers the bayonet > mount, lightproofing the connection. Doing that it adds about 1 > mm or so to the focal lengt and work as a mini extention tube. > It's useful when working with M42 extension tubes, especially > with those home-made ones. I had borrowed one of theese from a > friend and it wasn't covering the area of the bayonet mount and > the light was leaking into the body wit a very poor results on > the pictures. > There was one of this kind of adapters on a Polish auction > ending yesterday or so but the details are still up so you can > see a picture of it as I might have not described it clealy: > http://www.allegro.pl/showitem.php?item=5501984 > > Hope it clears something > > Maciej > > Dnia 26-04-2002 o godz. 23:56 Nitin Garg napisa�(a): > > I have used both pentax and non-pentax brand adapters. Both > allow > > infinity focus. Must be really badly machined adapter to lose > infinity > > focus. > > > > And yes, my non-pentax brand adapter is harder to take off > compared to > > the pentax brand one (which comes off very smoothly). > > > > cheers, > > nitin > > > > On Fri, Apr 26, 2002 at 11:47:39PM +0200, Sylwester Pietrzyk > wrote: > > > Hi! > > > I plan to buy one of these converters. As I heard there are > some of them > > > that does not allow you to set focus in infinity. Has > anybody any > > > experiences with this problem? How about original Pentax M42 > converter? Has > > > it this problem or can I buy it safely? TIA! > > > > > > Best regards > > > Sylwester Pietrzyk - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
