RIT has certainly changed since the 1960s. Take a look at their website.
Rochester Institute of Technology
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Rochester Institute of Technology
Founded in 1829, Rochester Institute of Technology is a privately endowed,
coeducational university with nine co...
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They have successfully transformed from a downtown college focused on
photography and printing to a suburban (1,200 acres) world class research
university with cutting-edge majors in the sciences and arts including
photography and media (formerly printing).
"RIT is one of the top universities in the nation working at the intersection
of technology, the arts and design. We are a university that is shaping the
future and improving the world through creativity and innovation … We put a
high value on bringing goodness to the world." RIT President Munson
I took a half day tour last month as part of my 50-year reunion. They
outlined an upcoming major expansion in their programs. Very impressive.
On Tuesday, November 12, 2019, 06:10:37 PM EST, Richard Lahrson
<gtripspud@xxxxxxxxx> wrote:
Lots of folks connected to RIT. I was there just a year mid-60s.rich
On Tue, Nov 12, 2019 at 1:49 PM Robert Shanebrook <dmarc-noreply@xxxxxxxxxxxxx>
wrote:
Yes, RRR. I was a student of Albert Rickmers, William Shoemaker, Hollis
Todd, and Richard Zakia in the mid to late 1960's. I learned a great deal
from them.
Kodak hired Rickmers in the 1980's to teach statistics in Kodak Park. He
taught a large number Kodak people.
On Tuesday, November 12, 2019, 12:57:55 PM EST, ROBERT KISS
<bobkiss@xxxxxxxxxxxxx> wrote:
Hollis Todd at RIT in the early 70s (formerly of Kodak and co-author of
Rickmers and Todd STATISTICS) taught us Photo Sci students about "The Three Rs
of Agitation: Randomness, Robustness, and Repeatability". The trick is that
things that cause currents and eddies (like the reels and support bars that you
mentioned) cause Robustness to interfere with the Randomness. It is a fine
balance but can be achieved.
On November 12, 2019 at 1:04 PM Robert Shanebrook <dmarc-noreply@xxxxxxxxxxxxx>
wrote:
Keep it simple:
Use time-and-temperature to control contrast/density. Yes, T-Max Films are
more sensitive to time-and-temperature differences than 3D films. T-Max
Film development time differences of +/- 15 seconds are enough to make a
difference. For 3Ds 25% is an appropriate difference.
Use agitation to: remove air bells in first 30 seconds and attain
development uniformity. To examine your process sensitivity expose each frame
in a roll to a mid-gray. The process using your technique. Examine your
results by noting the scanned values or contact printing onto high contrast
paper.
One of the keys to uniform development is random agitation so all portions
of the film have by-products removed. Over-agitation can cause patterns,
most commonly caused by the perforation holes. It is very difficult to get
uniform processing on roll film in a hand tank that cannot be inverted.
Roller transport processors give the best uniformity.
Suggestions based on several studies:
time > 5 minutesStainless steel tanks that can be inverted are much better
than hand tanks that cannot be inverted. best for roll film. If they leak
too much tape the seam after the first 30-seconds. 8, 16, 32 oz. tanks are
better than 64oz tanks
Put liquid in the tank then insert reels then put top on Wrap the bottom of
the tank 5 times (5 seconds) on a hard surface to dislodge air bells,
Invert to equal first 30 seconds.
Bob ShanebrookRobert Shanebrook - Kodak Film - Photography - Photographic Film
Manufacturing - Rochester - Ny
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Robert Shanebrook - Kodak Film - Photography - Photographic Film Manufac...
Book: Making KODAK Film , The Illustrated Story of State-of-the-Art
Photographic Film Manufacturing by Robert...
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Invert 5 times=5 seconds on a 30 second cycle.
On Monday, November 11, 2019, 07:30:22 PM EST, Dana Myers
<dana.myers@xxxxxxxxx> wrote:
On 11/11/2019 4:05 PM, Myron Gochnauer wrote:
I invert and turn the tank gently (90 degrees, so that the inversion starts
at various places around the tank). I never found
the twirling very effective on its own, although I think I would give a
couple gentle back-and-forth ’twirls’ on the 30 second
marks if I was agitating only on the minute. But then I misplaced the twirly
thing, and never really missed it.
I *alway* put a spacer or empty reel in the tank to prevent the loaded reel
from moving up and down during agitation, and I use
a standard amount of developer that leaves only a small airspace at the top.
I normally use “replenished” X-TOL, so the number
of loaded reels probably doesn’t matter.