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Alternatives similar to Xtol can be mixed with ascorbic acid, Vitamin C, as the main reducer.

Patrick Gainer did a lot of experimental work with ascorbic acid developers. ...

My comments comparing the high resolution pixel shift files with drum scanner is not about resolution, but what I would call micro-contrast, especially noticeable in the low tonal values. Drum...

I have been digitizing my archive of 5X7 negatives since last December with an a Sony a7r iv with 16 shot pixel shifting. This gives an image file size of about 19000 X 12000 pixel at 350 ppi with...

Contact printing the interpositive with 4X5 ortho film, and then enlarging to X-Ray film, ortho or blue sensitive, for the enlarged negative would be a relatively inexpensive way to handle this.
...

Here is a video that describes the mechanism.
The pixel shift mode is enabled in the menu.

https://www.youtube.com/watch?v=lwwzM81k5VE

Sandy

Yes, the technology does exist for making digital negatives that one can use in an enlarger. See website of the Chicago Albumen Works. http://www.albumenworks.com/

Unfortunately, the type of...

[QUOTE=Ken Lee;1579542]If we find ourselves disoriented in the woods, we can run around in many directions and eventually go in circles. Or, we can simply climb to the top of the

I totally agree...

In general the Kaiser light box gets very good reviews so sounds like something may be wrong with the one you have, could be a few dead leds strips.

One question, though, were you digitizing with...

In the specific case I tested, no, the high values and mid-tones corresponded closely to a linearized grama gamma 2.2. The increasing slope was in an area corresponding roughly to 70% to 85%. This...

If you only use a spectrophotometer to measure log density it is pretty much reflection densitometer, but not a very portable one since it must usually be tied to a computer and program to work.
...

A really great book on color and color management of your work flow is Real World Color Management, by Bruce Fraser, Chris Murphy and Fred Bunting, Peachpit Press. You can find used copies on Amazon...

I would not want to try to talk anyone out of using any method of making photographs.

My path was somewhat similar to in that of Ken in that I originally started with monochrome printing with an...

Happened to me once when scanning a sheet of 12X20" film with a Howtek 7500. The noise was indeed gut wrenching, but in the end the scanner came out unscathed. The sheet of film, however, was torn...

Here is link to a video Calvin just added on the use of earth pigments in color carbon.

https://youtu.be/QwLlVRC2r4U

Adjust your seat belts and take off when ready!!

Sandy

One easy solution to working with room lights on is to spray paint with matte black the inside of a card board box and place it open side down over the light source and the masked-off negative you...

Silverfast also has an HDR mode that delivers RAW type files with the Epson 850.

https://www.silverfast.com/highlights/hdri/en.html

I use an early version of it with the Howtek 7500.

Sandy

I would expect the 105 Sigma macro will be an excellent lens, but won't it also have the focus by wire system used in the 70mm Sigma?

BTW, in terms of resolution it is not hard to get great...

Bob,

The thing to keep in mind, from a commercial perspective of printing for someone else, is that color carbon is still just as complicated and time consuming as it was when John Bentley learned...

The Cone inks would be my first choice for third-party ink.

But another choice would be to purchase unopened Epson genuine ink on ebay. Cost used for the 4880 cartridges is often much less than...

There will be no justice in the Court of Fromm. The judge quotes part of a paragraph that suggests guilt, but omits a following sentence that suggests otherwise.

"Or maybe not. There was, she...

Hi Ari,

Thanks for sharing the link. I thought the work of Berkman was fabulous, as was the writing of Weschler. As you say, it seems not hoax or fake but more a tribute to an unknown...

Just to clarify, QuadToneRIP is a print driver (only works with Epson printers) that supports several different types of program solutions for making digital negatives. Many solutions are available,...

I have made digital negatives with several different Epson printers using QuadToneRIP and believe that overall this is the easiest approach, due both to the power of QTR, and to the fact that there...

If you plan to print in B&W you might also consider third party all black ink sets and running the printer with QuadToneRIP.

Sandy

Please send me a pm with your email address and I will share the folder that has the full size comparison with you.

I think you really can not go wrong with either choice, but do bear in mind...

I would check out the status of the printer through the control panel, as mentioned in a past thread. If everything checks out there it would probably be OK to proceed and see if you can get a clean...

Hello,

I could not find that file, discarded it for sure. Would not have been very fair anyway since different lenses were used and the comparison of 120 Pentax Macro to Apo Rodagon D 1:4 would...

Chester

All of my 5X7 film has been stored flat in negative sheets and lies perfectly flat, emulsion side down, on the AN glass so there is no need for tape.

I attach two pictures to show how I...

No problem.

What you are looking at is the Sony a7r iv as currently mounted on a Kaiser copy stand set up to do 3-pass stitching of 5X7 film.
From top to bottom.

1. a7r iv
2. Meike extension...

I appreciate Ken's reference to my work with 120 Acros film and to the article on two-bath development that can currently be accessed at https://www.pyrocathd.5x4.co.uk/.

Since 2015 I have used...

Attached are a few image files of the horizontal digitizing stand I built for scanning LF film with the Fuji GFX 50R. The construction of the stand was very simple, just required a bit of sawing and...

I don't use a macro bellows unit either. I use a Sony E-mount to M39 focusing helicoid. Similar to the one shown here, except this one is E-Mount to 42. These are sold under several brand names,...

A wet mount scan has some slight advantage in that it slightly increases micro-contrast of the file, and probably reduces touch up time. But in most cases I find that the final output size needs to...

The Sigma 70mm Art is indeed a very good lens, and also very low flare. However, in my own tests with high resolution targets I have found both of my Apo Rodagons give higher resolution. I also...

I will look for the tests but am pretty sure that once I made up my mind as to the difference they were trashed. I keep stuff like this on my desktop for a while but when it seems to have no more use...

Chris,

There are two flavors of the 75mm Apo Rodagon, one for 1:1, the other for 1:4. You must use an efficient lens hood with both as coating is not as efficient as with modern macro lenses. In...

Also, bear in mind that the combination of Fuji GFX 50R with Pentax 120 f/4 Macro weighs a lot more than Sony a7r iv with a 75mm Apo Rodagon. The extra weight could be a problem when used with a...

With 16 shot pixel shifting I get slightly better results with the Sony a7r iv than with the Fuji GFX 50R. The results are close as the larger sensor size of the GFX 50R almost compensates for the...

And at what aperture did you set the lens?

Sandy

The Canham ULF cameras are quite beautiful, and have great bellows draw and movements with minimum weight. I owned and used both 7X17 and 12X20 Canham cameras in the past. With the 12X20 I definitely...