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You can acquire ethyl ether stabilized with ethanol which slows peroxide
formation, or you could add 3 to 5 % ethanol to the ether (v/v). Merck sells
test strips (Merckoquant ether peroxide test...

Scott,

I'd anticipate two different situations, and multiple approaches to them.

The first is zone 5 red rock lit by direct sunlight against a zone 5 blue sky.
If you follow the suggestion to...

>>Are the cameras identical and made by one manufacturer with different distributors?
>
>No, the original is made in Japan and the clone is made in China.
>
>Kerry

Thanks, Kerry. I thought...

Are the cameras identical and made by one manufacturer with different distributors?

Janko,

You probably would be better off with the 300 mm lens. Specs for "normal" lenses
in the 240 to 305 mm range are given below. It's likely that this will be one
of your more frequently...

Use the times recommended for ID-11 and/or D-76.

[pre]
Dan,

Here's another list of lenses made before 1940. The minimum focal length
required to cover is given in the last column. You want something longer
if movements are anticipated....

This is a list of "modern" lenses for 7x17.

Focal Length, Aperture, & Maker E/G Shutter Rise - Fall - Shift
inches (cm) ...

Your introductory statement mentioned a 5x7 camera back. The
47 mm and 55 mm lenses won't cover the format... a 72 mm SSA XL
will.

If you choose the helical mount (commercial or homemade) to...

I would like to reiterate Donald's warning concerning the storage and use of
large tanks of CO2 in the darkroom.

At the medical school where I was doing my graduate work, a medical student ...

Tom,

If you look at the lens pupil from an angle with the aperture wide open, you'll notice
that portions of the front and rear cells, filters, and possibly the lens hood, intrude
into your...

Note: The heading for 5x7 "Rise Fall Shift in. (mm)" should have been
"Rise Fall Shift in. (cm)"... inches and (centimeters).

John,

I've pasted in a list of lenses which have at least a 275 mm IC to permit adequate
movements, and I've filter out some of the most expensive lenses. You might want
to check out modern...

"Metol" is the sulfuric acid salt of p-methylaminophenol. It will not generate

hydrogen sulfide.

The "sulfur" odor isn't hydrogen sulfide - it's sulfur dioxide (SO2) which

is formed from...

Well, so much for the simple approach.

Perhaps someone (Richard?) can post the lens length (put it on a flat surface,

place a sheet of glass over the lens, and measure the distance between...

The 12" f/6.3 Commercial Ektar usually was mounted in a #4 Ilex shutter. You can find

the shutter specs at http://www.skgrimes.com/ilex/index.htm, and use those to

determine spacing.

Specs...

Clay,

Consider cleaning the camera with mineral spirits and soft cloths. Then apply
a wax finish using a couple of coats of Butcher's paste wax. Screws may be
tightened by inserting a piece...

Soak the entire tray (including the outside bottom) overnight in a houshold
bleach solution (approx 1 or 2 cups per gallon). Sulfur compounds and other
smellies should be oxidized by the...

Craig,

It's unlikely that the spacer which is placed between the front cell and the shutter
is available. You can test your lenses by replacing the camera's ground glass with
window glass to...

I haven't used the camera, however there some problems associated with medium format
view cameras.

Alignment:

The depth of focus is not dependent upon focal length. The formula for two-way...

I'm not sure if coverage or focal length is more important to your applications,
so I'll suggest that you consider lenses in the 120 to 135 mm range which offer
much more coverage than the 135's....

The Steinheil Orthostigmat 36 cm. f6,8 is a 6/2 convertible design which is
reported to cover an angle of 85 degrees. That should give an image circle
of approximately 660 mm, and on 8x20, one...