Re: [APML] 1 more Pentax MF question

["Steve Walters" <s-walters@comcast.net>]

If you do go for an older 6x7, there is a trick regarding the film advance.
In the older cameras, it frequently happens that if you do not advance the
film to the next frame using a SINGLE smooth stroke, the camera will decide
it's finished advancing even though its not. This will ruin frames and/or
waste film. So, the trick is simple: always advance the film with a single
stroke.

Depending on your opcial configuration, the mirror lock up may or may not be
needed. I used one for quite a while that had no MLU and could see no
difference between using the shutter or a hat trick. But your mileage may
vary depending on how damped your optics and mount are.

Steve...

----- Original Message -----
From: "Jon Kolb" <jkolb@datawest.net>
To: "'Discussion of Film Astrophotography'" <astro-photo@seds.org>
Sent: Sunday, December 14, 2003 9:44 AM
Subject: RE: [APML] 1 more Pentax MF question


> Hi Alan,
>
> > Just looked through a couple camera store websites, and that
> > left me with this question: what are the differences between
> > the 6X7, 67, and 67II cameras? Is one more preferable that
> > the others? Sorry, that's two. 8-)
>
> The 6x7 is the oldest version, and not all of these have MLU.  The 67
> was next, and all of them are supposed to have MLU.  The 67II is the
> newest and thus the most expensive.  I have not tried the 67II, so can't
> comment on it.  Since the film transport system on these cameras can get
> stiff over time (as has happened on my 6x7), I would recommend going
> with a 67 that's in as close to new condition as you can afford.
> www.keh.com is the place to look to get a feel for prices.
>
> Sincerely,
> Jon Kolb
> Adventures in Astrophotography
> http://home.datawest.net/jkolb/
> Life Member, International Dark-Sky Association
> jkolb@datawest.net
>
>
>
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