edward_issac

<p>Friedemann beat me to the punch -- Dean's converted Polaroid land camera conversions are very high quality. I have a 900 myself. There tends to be a waiting list, though.</p>

<p>Thanks everyone. Paint fleck seems the most likely explanation for the blotch. I see spots where paint would have come loose. <br>

The notches are fine with me .... Nice image, Stuart.</p>

<p>Thanks Q.G., I did check the mag closely and didn't see anything suspicious. But a good suggestion. Cheers.</p>

<p>Thanks B.and Dave -- OK on the notches-- I gather that's part of the Hassy profile. But the edge blotch (not in the corner by midway down from the notches) must be an aberration of some kind, no?</p>

<p>New Hasselblad user. I just ran my first roll of HP5+ through a 500 c/m + 180mm CF. I notice that every shot has two slight notches in the left side of the image, as well as a funny black splotch lower down the same edge.<br>

See images (take a couple of seconds to load):<br>

http://gallery.me.com/emile_lebrun#101087/hassy1030&bgcolor=black<br>

http://gallery.me.com/emile_lebrun#101087/hassy1032&bgcolor=black<br>

http://gallery.me.com/emile_lebrun#101087/hassy1031&bgcolor=black<br>

My questions are:<br>

1. Do all A12 magazines have this distinctive side double-notching? I see the two indentations on the magazine that are causing this but I'm hoping a later version of the cassette is free of them. My magazine SN is UP 429890.<br>

2. What the heck could be causing that blotch lower down the same edge?<br>

Thanks everyone.<br>

Edward</p>

<p>Note it is possible to scan 4x5 negs with the V500. You have to do it in two passes, then stitch them together in PS. It's far from ideal since you have to place the neg directly on the glass--no tray. I keep my 4x5 negs in clear plastic archive sheets meant for polaroids and I lay that flat on the glass. Dust removal is a challenge. If there was a compact, dedicated 4x5 scanner, I'd probably buy it.</p>

<p>I was interested in John's comment about using a digital to do test shots. To get a proper test (=framing and exposure) I suppose the principle is to reproduce your LF camera's lens length, aperture, shutter speed and film speed. I'm guessing this means a D-SLR. Anyone have any recommendations for the cheapest possible digital solution? I spent my money on my LF camera, prefer not to pay out all over again...</p>

As someone who purchased a 600SE last year expressly in order to use it to shoot 6x7, I can say that with the 'G' adapter the camera does take the RB67 back. With the standard 127mm lens you get a good full-frame image. But keep in mind:

 

- since the 6x7 negative is a smaller frame than Polaroid film, your effective angle of view with any given lens will be narrower (obvious I guess but I didn't think of it at the time);

 

- if you want to move up to 4x5 backs, while the adapters are available (via Tony Sansone and elsewhere), do the math first to make sure your lens will cover the entire image area. My guess is that for 2 out of the 3 available Polaroid lenses, you will get significant vignetting.

 

Happy shooting.

Thank you, John. Much appreciated. I will see if the issue of vignetting is addressed eslewhere in the forums before purchasing a 545i back.

 

Regards,

 

Emile

My first post as a proud new member of photo.net...

 

Last year I bought a Polaroid 600SE as a way of getting into medium format

photography at a reasonable price. The standard lens is 127mm f/4.7 and the

standard back is Polaroid peel-apart size (7.3cm x 9.5cm). But I bought the

camera because with the appropriate adapters it takes RB67 film backs and even

545i backs.

 

But something just dawned on me this week that will be obvious to many of you.

If the focal length remains the same (I only have the one lens at the moment),

then by switching image size I am altering the effective angle of view that

obtains on the negative. If I do the math, the "normal" focal length for a 6x7

negative should be about 88mm, and for a 4x5 it should be about 163mm. So

shooting 6x7 at a focal length of 127mm gives me, in essence, a portrait-type

field of view (narrower than normal). Shooting 4x5 at a focal length of 127mm

gives me, in essence, a wider-than-normal field of view.

 

Having established this, my question relates to exposure values. Does

switching to a different image size than the "normal" negative for this

camera, which is a Polaroid peel-apart film, imply a need to compensate for

the difference in the amount of light reaching the negative? That is, with 6x7

and 4x5, am I still working with an f/4.7 lens (effectively)? If I need to

compensate, how the heck would I calculate it?

 

Thanks all!