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Another way of looking at it is the progression of the area of a sphere with change in radius, where radius is the f number in any units (inches, meters, furlongs). The area doubles with each f...

Other good options are Venmo and cryptocurrencies like ETH and BTC. Crypto is especially useful for international transactions and much faster than wires, e.g. 15 minutes instead of days.

You have + in front of your number of pops. You’re not adding to the prior value in your table, just showing the number required.

Lowest cost option I can think of with your current assets would be to purchase frosted or opal glass to diffuse daylight behind the negative and scan with the the H25. Build a jig to move the neg...

Open a new document, with select tool copy and paste slices of the image into the new doc and print it.

Is laser better than waterjet for cutting openings like this? Taking 1 or 1.5 inch from both dimensions results in a small change in the aspect ratio. Might asymmetric borders make more sense?

I did a lot of retouching b&w and color. For me the most important thing is a good brush. Winsor & Newton Series 7 in a size 0 or 00.

Try reagent chemical suppliers like Sigma Aldrich https://www.sigmaaldrich.com/catalog/search?interface=All&N=0+114538164&mode=partialmax&focus=product&lang=en&region=US

What happens when you move that front standard to the rear and rear standard to front? Also put both standards on the same side as Jimi said.

If you are paying for instruction your instructor owes you clear explanations of concepts. The “white on white” reference sounds like the white tones being so far up on the log curve there is little...

Sounds similar to the integration unit on a UV plate burner, shoul be very useful.

Edwal No Scratch is great stuff. A diffusion enlarger also helps.

Since a panel LED can be gridded that would appear to be a nice alternative, less need for flags etc. getting in the way.

If you can quantify the amount of bleu then add the same yellow and appropriate exposure factor. Possibly resolvable in printing but I would rather start as close as I can.

Can you place a sheet of plastic over the tank to control the splatters? Fortunately I've never had much in the way of reactions to darkroom chemicals, although I did once experience a bout of my...

Sigma Aldrich carries it. This is th 98% grade https://www.sigmaaldrich.com/catalog/product/sigald/243361?lang=en&region=US

Frisket paper or frisket film should work.

The downfall of many running a film line is failure to maintain control and cleanliness. In a test a few years ago we sent 4x5 film to a number of labs and all but one had embedded dirt from failure...

I think you are referring to the number of exposures in the mosaic for which the limit would be resolution of the grains or dye clouds. Those are the details. However there can be actual noise in the...

Exposure controls density and development controls contrast, so it sounds like your 4x5 needs the dev time increase and perhaps the shutter on the Nikon is a bit slow. Try backing off the exposure on...

Make sure ypou clean or replace the filters in your drying cabinet.

See Photos button does not render the gallery, stays on home page. Good start.

200833
Trayvon Memorial

Would it be possible to see a best rendition comparison of shadow and highlight areas?

Nice. I can see the better separation in the shadows in the one with the higher contrast.

White dust (negatives) can also be due to embedded dirt during development, in particular the drying stage. In a test of several labs a couple of years ago we had difficulty finding one that kept a...

The middle crane pond near the entrance to Bosque del Apache south of Socorro, around sunrise. Ideally with a bit of fog. There should be cranes and snow geese and several flights.

The VLA can be...

If you go to Wheeler for the cranes the best times would be either sunrise before the flights to find food and evening when they return to roost in the water. They can't swim, so they'll be in the...

When I transported my Horseman monorail I disassembled it and wrapped each component in a lens wrap, then everything went in a Kelty backpack. That was pretty compact and everything was well...

I agree. A sheet oriented orthogonal to the source and in the center of your baggage.

Re sending film through the mail, why should that be assumed to be a safe mode?

Here is some reading material that might help. One article references possible use of periodic exposures in the CT slice method, which has some implications for film (stripes?). Looks like you can...

A few More books https://www.alibris.com/booksearch?title=clarence+john+laughlin&mtype=B

Long ago in an inherited darkroom I found a bottle labeled Newt Dust. It was cornstrarch in a squeeze mustard container. The theory was that you would blow a puff of this magic dust in the air and...

It does look like a scratch. There used to be a product called Edwal No Scratch that was handy for printing negs with scratches. I suppose mineral oil might be worth a try. *Looks like Freestyle...

I wrote an app that was used for geotracking and this was a common challenge. We cached data for upload when connectivity was available. It was a very data intensive app and we queued many MB of data.

There is a building in downtown Decatur GA that has highly reflective windows. They had problems with birds crashing into the windows so they have loudspeakers playing bird distress noises to keep...

You could export your FM Pro data to a NoSQL database like MongoDB hosted on a cloud platform (AWS etc.) and use a web interface to access the information from any connected device.

When I ran film there was a little more to it than a processor and some chemicals. There was also process control. We would run a control strip daily and read it with a densitometer and plot the...

I once had an Omega D2 shipped Greyhound. It was the cheapest option at the time. Worth checking out.

Just use f-stop inches. For an 8 inch lens (“f8”) open 1 stop at 11” (“f11”) and 2 stops at 16” (“f16”). Substitute f-stop cm as needed.