Search:

This unit is getting a lot of praise over on Photrio: https://www.dektronics.com/store/p/printalyzer-densitometer

No, you need collimated light out of the front element (all rays parallel to each other), so the light source should really be a point in the infinity focus plane.

The aperture number is the ratio between the focal length and the apparent entry pupil. Your lens is a 380mm with a maximum aperture of f/5.6, which means that when seen from a long distance out in...

Here's a home made example of an ultra large format portrait rig: http://www.tested.com/inventern/456749-maker-profile-michael-shindlers-ultra-large-format-tintype-camera/

The shim *could* be original, of course. It may have been decided during QC that this particular lens/shutter combination needed that extra 2 thou. Reading this FAQ entry from Flutot's Camera Repair,...

I use a Durst Laborator 1200 for 4x5" myself, and I think I know where the "is it a 4x5 enlarger or not" is coming from. The negative carrier, called FEMONEG, is shaped so that it will diagonally cut...

Will the classic "measure a known size object on the ground glass" method work with a telephoto lens, or will the result be off?
See, for instance, http://www.salzgeber.at/disc/index.html (the one I...

That wouldn't really help you much - these negatives are just grey scales from the sensitometer. They have a relative log density ranging from film base plus fog (0.15) up to a maximum of about 1.25...

Oops - I got the name all swapped around. :) Anyway, Retropan 320 is a traditional film with lots of latitude, and if you're rating it 2/3 stop slower than Foma says, and developing according to...

I don't feel competent to comment on the rest of your problems, but I have to say: no, you will not achieve shadow detail by prolonging development. If you're getting clear shadow areas, you're...

There might be some additional information here: http://www.theonlinedarkroom.com/2015/09/finalised-film-table.html

Actually, after cleaning up the data a bit, rechecking some dodgy looking readings, and interpolating the results more carefully, I end up with 4, 6, 8, 12, and 18 minutes, with an extra 1/3 stop of...

I did some sensitometer based testing of RetroPAN 320 over the weekend, using Ralph Lambrecht's article and spread sheet, after observing that Foma's recommendation of 7-8 minutes in HC-110 diluted...

Unless you put something in between to fix that. :) Take a look at this guy's eBay storefront: http://www.ebay.co.uk/usr/vfmoto
He makes and sells shutter speed testers in a variety of forms and...

Steve Simmons: "Using the View Camera" - a good introduction.
Leslie Stroebel: "View Camera Technique" - highly technical; very good if you're comfortable with that.
Ansel Adams: "The Camera", "The...

I really like Harold Merklinger's writings on this subject. See http://www.trenholm.org/hmmerk/ for the complete collection. His books go into more detail than most photographers need, but are very...

I beg to differ. I just bought a Sinar P, and I'm not a professional photographer, and I definitely can't afford to buy a new Sinar camera. I got this one cheap, and it needs some work, and some...

It looks pretty much like the (original Linhof) one I have on my Linhof Color, which gives an image that's right side up, but reversed left to right. (Which it obviously must, given that there's a...