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Felton? Been a long time since I lived in that area - over 50 yrs ago. Didn't know there were any bootmakers there - are you sure it ain't a bootlegger? My last pair of boots was made by Esatto in...

The Wratten handbook gives transmission charts and percents at various wavelengths. For daylight 5500K or close to that, it's around 48% transmission for light blue no. 38; so a single stop of...

Creation Bear - Not hot enough here this time of year for beer; but I have my own compete framing facility, and have equipped and advised museum shops handling some of the best photo collections in...

Beware of any ad paid for by a Chiropractor seeking new business.

In principle, one never has paper in direct contact with wood, or even with conventionally sealed wood. One needs to know what they are doing. Several good hints have already been provided in...

It's no secret that massive amounts of oligarch and dictator money via family members and cronies have gotten laundered in big East Coast art auctions and specialty fairs over the past decade or so....

With a pandemic, war, and famine raging on, it's nice to know certain people still have obscene amounts of money to toss around. And with the toilet paper shortages, it amazes me that nobody has...

I've done some enlarging tests with G-Clarons. They're decent at that, but not fantastic. But at only about 4X that you're contemplating, it shouldn't matter except toward the corners. Depth of...

Amazon and the like - you me the toy store? Unfortunately, good pumps aren't cheap, but might turn up quite reasonable on the used market under Graphics Supply and Industrial listings. You can get...

Their quality control seems to be better than ever. I've carefully tested E100, and it's spot on 5500 K daylight color balanced just like they claim. That has long been Kodak's standard for official...

I no longer use vacuum pumps, though I have them in storage. I do have several high quality domestic made oilless compressors from the same outfit that now makes those pumps only for industrial vac...

I've been working with pre-mixed Formulary A&B concentrates for a long time. No issue. The pyro solution itself can go rather brown if old and oxidized, so might be better in a glass bottle than the...

Little exposure errors can add up fast. For color transparency usage, even a third of a stop might be objectionable if one is working on the edge of contrast limits.

There were millions of them made for industrial line applications. The ones adapted for graphics applications were just a small percent.

Quiet Oilless vac pumps have been around a long time.

Remarkably little vac power is required if there is no leakage around the perimeter. Depends on the efficiency of the frame design. A more common problem is too much vac drawdown. Too powerful a...

Wow. That's quite a collection. I used the P67 system only briefly a couple or years in my late 20's, then loaned it all to my brother until his death. He had an eyesight problem due to a heart...

The later 55's took 77mm as I recall. I sold my 55/4 - it had a lot of illumination falloff, and now prefer the 75/4.5 as my only wide for the system - which is also nice because it shares the same...

That must be one helluva a telephoto. My 300's for the Pentax 6X7 need only 82mm; and that's a setup that needs even more solid support than my 8x10. Longer than that, and P67 "cannon barrel" tele...

Different strategies. Out in the weather, coated glass filters have a big advantage over more fragile and electrostatic plastic ones or gels. And as far as standardizing on something huge like a 95?...

When starting out, don't overcomplicate things. Start with just one film and developer combination, stick with it, and learn to print well from it before wandering off other directions. FP4 would be...

It's awfully cumbersome to work with just the biggest size filter for everything. I personally have round glass filter sets in all the sizes you list because I never carry all my lenses at the same...

Wow. I couldn't get their website open today. But the evening news did show a bear wandering around back yards in Fairfield, a shopping center sorta burb in Wine Country north of here. That started...

Last I spoke with them, Precision Camera Works, now here on the West Coast in Fairfield CA, had quite an inventory of Sinar parts on hand. But that was pre-pandemic, so you'd want to call them. Often...

It appears to be just a basic immersion heater. Never use it dry. Fill your water bath with water slightly below your intended temperature. Let your immersion heater adjust to that temp five...

The spectral sensitivity of the SPD's on the Pentaxes and Minoltas is relatively symmetrical, and reaches its peak on green just like the normal human eye. Metering through colored contrast filters...

Front fall is just inverse to rear rise. You can use them in combination if needed. Later model Sinars had way more than I ever needed, even in architectural photography. I even cut off some of the...

It's not just the amount a shutter might be predictably off at the highest speeds, but unpredictably off. There is likely to be more variance of error than at other speeds. Every lens needs to be...

Most high-speed work is done by flash. And few LF leaf shutters are anywhere near accurate at their highest speed of 1/500 anyway; I've only ever had one which was. I can't ever recall taking a...

100% direct optical workflow. Now shooting exclusively color neg film (mostly Ektar 100 in multiple formats up to 8x10 - way better product than old Ektar 25 was), optically enlarged onto Fuji RA4...

What about the 355 G-Claron? That should work decently, and will be slightly lighter in wt than typical 360 studio lenses. It's in a no. 3 shutter. Although the Fuji 360 A is of similar optical...

Yep- There's nothing like trying to get old masking tape and its residue off of equipment. The labs and studios used miles of it. That horrible custom only ended when duct tape got popular instead -...

They last a lot better in the lab or studio than in the field. But ya still gotta be careful. Keep around some alcohol wipes for your fingers. And some colors are more susceptible to fading than...

Same with all machines, Michael. No exceptions. Nothing is foolproof, although it's hard to beat a simple stainless tray for black and white development, at least. All my color sheet film is still...

Well, sounds like you're having fun. Let your heart lead you.

Had? (Past tense). What happened? Did Al Capone's boys drive in from Cicero and Tommy gun holes into rival bootleg C41 barrels, or what?

You're somewhat mistaken. It's one of most contrasty color neg films, and realistically gives only about one stop extra latitude either side of what a typical E6 chrome film yields, but has neither...

They were routinely used around here by the big labs, and known for their consistency.

Expect a bit of inevitable image degradation if gels are used behind the lens. This has been argued back and forth forever; but regardless of the optical theory, it's almost impossible to keep gels...

TF4 is alkaline. It's what I routinely use. Excellent product. But new bottles of concentrate sometimes do need to be shaken to get settled ingredients off the bottom. I NEVER re-use any kind of...