don_welch
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Posts posted by don_welch
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Jeff,
<p>
I'm sorry that I can't help you with accessories for the Cambo. I
just wanted to say that when I bought a Cambo years ago (and I still
use it), I called Calumet to see about a manual or ANY sort of
instructions. I was told there weren't any.
It's not a current model. Try Calumet for lensboards.
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Not getting into the question about why Fred fired the 5 assistants,
I have to say that the yaw-free aspect of my Horseman is not just
marketing. If I use it for a while and switch back to my old Cambo,
I feel the difference in the efficiency of setup time. "Sensitivity
and true feel for the craft" can't be quantified objectively. (The
person that brings it up first can claim to have it, and that the
other person wouldn't recognize it if it bit them.) But I can
quantify and qualify efficiency of setup time, and I don't think that
lessens my craft or skill in using the camera. If I wanted an easy
life, I wouldn't be using a LF camera.
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LPL enlargers are Japanese-made, distributed under the Saunders brand
name in the US. Calumet has a full line from 35mm to 4x5. Search
their website for "Saunders enlargers" and you'll get them.
<p>
I use a Saunders LPL 4550XLG. It has a variable contrast head, which
can quickly be switched out with a regular Black and White head or a
dichroic head. It has been a joy to use.
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I use a Horseman LX-C, heavier and with some more movements than the
LE, but I would recommend you strongly conside the LE if you can
afford it. As others have said, 150mm may be a bit short for an only
lens, but I made out fine with a 180mm for a while before I got a
more rounded out group of lenses (over a period of years). 210mm
would be even better.
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I agree with Jorge about the BTZS being an overcomplication. Of
course, some people think that ANY zone system is too much to deal
with, but like Neil Poulsen said, the point is to produce a
predictable printing situation. That can't be done consistently
without effort. Everyone sets out on this path and decides where to
camp out, but don't let the worry that you haven't found the RIGHT
system yet keep you from making photographs. Your experience with
your own equipment and darkroom procedures is your best teacher.
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I agree with some of what Dan said. Pick one authority and stay put
until you really feel you understand what is being taught. It's
easiest to start with Ansel, since all the "beyonds" and "even more
beyonds" start there, too.
<p>
There IS a slop factor to LF gear, as Dan said, but it can be
minimized by careful work, without having to obsess over precision.
If adherence to any system takes away the enjoyment of making
photographs, it's not right for you. However, I find that careful
attention to detail, including knowing how well-calibrated my
shutters and light meter are, results in more consistently good
images (technically). Use the system you choose, and your equipment,
until they become second nature. Until you aren't thinking about
technique, rather you are concentrating on what no Zone System can
teach you: making art out of light and shadow. Get that part right
and you won't need Harry Pothead to make you feel good!
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Obviously Steve and everyone but the last poster is aware that the
unsharp masking being discussed here (and especially as it relates to
Howard Bond) is not a computer filter choice, but a purely
photographic one. Perhaps the last post was "tongue in cheek"?
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Ignoring for a moment whether there is quid pro quo affecting
articles and ads in View Camera, I think the most disturbing thing
I saw in the issue was the article on "View Cameras in a Digital
World". The images used in the article are fine when viewed from a
distance of 3 or 4 feet, but if you look at them from a normal
reading distance, all but one are unacceptably unsharp. I'm talking
about resolution, not focus. Five years ago this would have been
fine, but when you are using a Sinar camera for product photography,
and proclaiming ours to be a "digital world", I expect the final
image to rival film, and this doesn't come close. The article is not
of great length, it does point out some of the limitations of the
digital medium, and it underscored the ease of use of the images
after they are made as a big plus. However, as an "advertisement"
that might attract film users to ditch their film and go over the
wall, it fails. This is where I find fault with the magazine: I
would not expect them to devote space to less than the best examples
of traditional film images, either from an artistic or technical
standpoint, so this should apply to digital as well. I don't think
that if they are going to feature digital I should have to back up a
ways to make it look right.
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Jim, this is obviously a very important topic to a lot of us. Scott,
you talked about the constraints that having little kids puts on you.
When my boys became teenagers, they had to have separate bedrooms, so
there went my darkroom for a while. When they were both in college,
and I finally had the money to do so, I completely rebuilt my
darkroom and furnished it with the best equipment. Of course, at that
point the very job that allowed me to finance all that took up all my
time, so I was just as frustrated. I finally settled on a schedule
of late night darkroom work, 2-3 nights a week, because my wife goes
to bed early to get to work early. Other nights I often have to go
back to the office to work. So I never sleep, I've cut years off my
life expectancy, but I do finally get to turn out prints from a well
planned and comfortable darkroom. The trade-offs are always there.
Like now, I have only a fuzzy memory of what my dreams were when I
was 25 or 30, or how I thought I was going to achieve them. Dreams
can evolve and should to keep you going instead of giving up.
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To get really, really picky, the progression of bellows compensation
from infinity focus (with no compensation) to any other extension is
not linear, but logarithmic. For example, using the 13" lens just
cited, you would need a 1 stop adjustment (factor of 2) at 13" x
1.414 or 18.38", instead of half-way between 13" and 26", or 19.5"
Like I said, this is really picky, but if you are going to the
trouble of constructing a chart with a factor calculated at every
inch of extension as Jonathan did (which was right the second time
around) you might want to use the formula.
<p>
On the other hand, you probably need to balance out how much
precision you need in exposure calculation with how precisely you can
control your development process.
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Larry,
<p>
If you were serious, you better say so soon, or this is going to
get to be too much fun.
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I agree about the preferred use of TMax (or other more "normal" tonal
scale films) over TechPan for 4x5. There are circumstances that have
warranted its use over the years (very low contrast situations), but
I think you will find yourself fighting the contrast for little gain,
if any, over 4x5 TMax. BIG enlargments maybe, but still you won't
have the tonal control you would have with other films without more
trouble than it's probably worth.
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No thanks, I have an enlarger that I'm enjoying just fine. I also
use my computer for printing color. I don't have to turn my back on
one to enjoy the other. They are not the same thing at all. I can
print three versions of any negative I have but that doesn't mean
that I should "get my head out of the vapors" like that is something
bad. The future has ALWAYS been here, so I don't have to make a daily
habit of turning my back on the past just to feel OK. Please
understand that I'm not speaking from an anti-digital point of view.
I use it a LOT. Piezography is great, but as many people have pointed
out in this thread, the comparisons are always between what digital
is becoming or can be, and what conventional photographs have been
for decades. I'm not looking to replace what I already derive
pleasure from as if it were outmoded. It's not.
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Dave,
<p>
I can't address anything about the Arca-Swiss line. I do have a
Horseman 45LX-C. I bought it slightly used for a lot less than list
price.
<p>
It is very rigid. Movements are great. For studio or architectural
use, it's very nice. Now, is it heavy and bulky? You bet. I have
carried it, plus related equipment for miles up mountains or across
sand dunes because I can't afford another, lighter camera for the
field. On the whole, I have appreciated having that camera when I got
where I was going, because I wasn't giving up anything as far as
movements. If it were lighter, by a lot, it would be perfect. As it
is, I still wouldn't trade it, because when I don't have to lug it a
long way, it is very steady and dependable.
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John,
<p>
Washing in the expert drum works fine. Have you looked at Jobo's
website? (http://www.jobo-usa.com) It has extensive information on
all aspects of using the drum, including washing. They recommend a
five minute wash, made up of 10 wash periods of 30 seconds each, so
that enough fresh water is used to produce an effective wash. They
also say that the washing intervals may be longer than 30 seconds
without harm, but that the number of water changes is important. Jobo
definitely recommends NOT using Photo-Flo or similar product in the
drum, because agitation causes it to foam and it doesn't clean out
easily. So do that in a separate tray or other container after
washing is finished, if that's a normal step in your processing.
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Dave is right about framingsupplies.com. Their prices are the best I
have found, and they have all the accessories. I have been
frustrated by the several mat cutting setups I have used over the
years, but I spent the money and got a Fletcher and it has allowed me
to get the quality I wanted. Although you will find professionals who
are able to make good cuts with minimal equipment, if they do a lot
of cutting, they probably have top equipment. You have to figure how
much it's worth to you. If you tend to print a lot of the same sized
prints, Jeff's suggestion about having it done for you is good. I
don't have a standard printing size that would accomodate that. And I
often need it done NOW, so I couldn't wait.
<p>
Robert is right about sharp blades: they are essential for a good
cut. Beyond that, no matter how much you spend on a mat cutter,
practice a lot.
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I spent 30 minutes looking for any obvious explanation on the
internet. I found reviews for 65mm and 75mm Nikkors in which the
users commented on obvious falloff, but which they reasoned was to be
expected with any wide angle lenses. I know this goes against
Jorge's experience with the 65mm lens. I think that Michael might
not notice it with his 120 and 150 lenses because of the greater
coverage and the fact that falloff is greater with shorter focal
length wide angle lenses. I use a 90mm Schneider, and falloff is not
a big problem unless I'm pushing the coverage of the lens, and
especially when the subject is evenly lit.
<p>
I think that Nikon lenses probably need the filters as much as lenses
made by other manufacturers do, but the confusion arises from the
fact that Nikon does not choose to make Nikon brand center filters
available. However, since filters made by Hoya and others will fit
the Nikon lenses, this is not a problem. I couldn't find anything to
support Nikon lenses being magically less susceptible to falloff, but
it is an interesting question that has crossed my mind before.
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Actually, it is pretty standard in 65mm wide angle lenses that the
image circle produced is 170mm across. This compares to about 160mm
for the diagonal width of a sheet of 4x5 film, so a 65mm wide angle
lens would cover 4x5, but with no movements to speak of. You still
have a good question there about the lower price. Maybe less glass.
I don't know.
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I would say that N+1 is the same as pushing the film 1 stop. However,
you will find "pushing" and "pulling" used for either exposure or
development changes, or both. The Zone System, in its many forms, is
more precise as to what constitutes a normal negative, or the
deviations from normal.
<p>
N+1 results in the increase of density of a Zone VII exposure to
match the density of a NORMALLY processed Zone VIII. This is
accomplished by increased development time. (Although you may have to
compensate for the slight increase in Zone I density by a slight
decrease in exposure, as I said in the first answer.)
<p>
N-1 is accomplished by reducing development time to the point where
the density of a negative exposed for Zone IX is lowered to match a
NORMALLY processed Zone VIII. (And you may have to slightly increase
the initial exposure to counteract the slight lowering of Zone I
density)
<p>
Other Zones react to the change in development, of course. Lower
densities react less and higher densities react more. If you expose a
scene that contains a full range of light values and develop it for
N+1, Zone VII will go to Zone VIII, by definition. Zone V will be
somewhere between a normal V and VI. If the scene contained Zone
VIII values to begin with, they will now be higher than Zone IX,
because they were denser than Zone VII to begin with, and they react
even more than Zone VII to the increased development.
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Armin,
<p>
There is a review of the Splitgrade in the May/June 2001 issue
of PhotoTechniques. This is Vol. 22, No. 3. If you email them at
circulation@phototechmag.com you can get a back issue.
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I don't think the previous answers addressed your question. First,
look at your "normal" densities. If you check out most film
calibration articles or books, the recommended density for Zone V is
in the 0.65 to 0.75 range, and the density for Zone VIII would be in
the 1.25 to 1.35 range, IF you are using a diffusion enlarger head.
The values for a condenser enlarger would be slightly lower.
<p>
If you develop your film for a longer time, the increase in density
is not linear for all Zones, which is what allows you to achieve the
desired effect of increasing the contrast of the negative relative to
normal development. The Zone I will not change very much, Zone V
will change more and Zone VIII will change even more.
<p>
To achieve an N+1 development, expose for Zones I and VII, and
increase your development until the Zone VII exposures match your
normal Zone VIII density. You will notice that Zone I does increase
some, and you might want to decrease your initial exposure by an
amount that brings Zone I into the normal 0.1 above base and fog
density. That might only be 1/3 stop or so. Development for higher
than N+1 would require greater reduction in exposure. How much
reduction is a function of any particular combination of film and
development method. You would have to experiment to find what YOU
need to do. This can be tedious, but it can be rewarding, too. Don't
get so caught up in worrying about it that you don't take pictures.
That can happen.
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I use a CPP-2 and expert drum with TMax 100. The real challenge with
TMax is repeatability. You MUST watch your temperature to the tenth
of a degree, and your methods for diluting your developer have to be
precise. If you pre-rinse, as Sexton advises, get the temperature of
the pre-rinse water exactly right. Don't let your development times
get sloppy. Keep them carefully timed. Whatever developer/time
combinations you settle on are up to you, but careful darkroom work
is a big part of getting the results that the CPP-2 and TMax are
capable of delivering.
<p>
Don Welch
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Peter,
<p>
I bought an X-Rite densitometer on eBay for about half price. It
was used but well cared for, and it works very well. Yes, there are
ways to use a spot meter instead, but it's not nearly as exacting as
a real densitometer. You are still going to be approximating real
density measurements, so you might as well get a step wedge and make
visual estimates of comparison prints.
<p>
If you are doing extensive film development tests, as I have spent
the last two months doing, a real densitometer is indispensable. I
could never have finished my testing if I had waited for chances to
use someone else's machine. It's not cheap, but it can certainly be
worth it in time savings.
New Darkroom, wondering about the Beseler MXT
in Large Format
Posted
James,
<p>
I had an MXT for 8 years. I loved it for most of that time. However,
it apparently got "warped", because from one day to the next it would
never align properly again. I worked on it for months without success.
Also, the focusing would jump. I hated getting rid of it, but I had
to. I bought a Saunders/LPL 4550 XLG. I've really enjoyed it, both
the alignment and the secure focusing.
<p>
That said, I agree with other posters about buying most equipment
used, and if the price is right, do it. My only fear about an MXT
after the problem I had is in knowing whether or not the one you buy
is aligned or can be aligned. This may not really be a common
problem, but since it happened to me, it would be a worry.