RE: [APML] Focus Problem with Pentax 67

["Thomas W. Earle" <twade@bmi.net>]

Roland,

I can't add anymore suggestions, but I can say that using a vacuum
back from Hutech makes all the difference in the world.  I was
having problems with the film not laying flat.  As a result, some
portions of the film would be slightly out of focus while others
were pinpoint sharp.  I used the vacuum back for the first time this
last New Moon (i.e. first week in August), and my stars were
phenomenally pinpoint from edge to edge.  I highly recommend a
Hutech vacuum back to anyone using a Pentax 67.  It makes an
incredible difference, especially if you are really picky like
me.:-)

I do hope you find the problem because seeing those nebula on that
large 120/220 negative/slide is just breathtaking.

Wade


_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo