Recent content by honerich

Slightly off-topic, but let me answer in more detail: Does it make sense to discuss a proposed (but never implemented) change to the speed criterion published by C.N.Nelson in 1959, based on a standard from 1954 or even earlier? Back then, unlike today, films had an extremely S-shaped...

Which company uses ISO standards? I don't know any! Foma's box speed definitely is too high with any standard developing process. The Ilford film data sheets state: “It should be noted that the recommended exposure index(EI) is based on a practical evaluation of film speed and is not based on...

Just an idea: Banding can be caused by bromide drags. A certain kind of bromide drag can occur with rotational development. If rotation always takes place in the same direction, potassium bromide can concentrate - following the film winding - on the inner turns of the reel and hinder development...

According to ISO 732 for 220 Film: leader: 552 ... 603 mm (21.7 ... 23.7") trailer: min. 356 mm (14") length of film: 1651 ... 1700 mm (65 ... 67") edit: swapped leader and trailer

Harman provides its film surfaces (of the Ilford and Kentmere brands except for PanF) with an extra lubricant and wetting agent coating. This is to ensure the lowest possible friction during film transport in the camera and later the most even and fastest possible wetting by the developer. I...

After development of an APX100 there is the typical foam in the tank, typical for all films from Harman production. The differences between APX and Kentmere are negligible. As Lachlan mentioned, the reason for these differences could be a never perfect test procedure with amateur equipment. But...

Thanks for your answers! When my good Xtol stock will be used, I'll give it a try with a few test shots on cheap 135 APX film (=Kentmere), rewind this film, cut the appropriate length and develop it. As we are in lock-down, this waste of time is tolerable. If it works as expected, then there is...

And what was their response? I'm also waiting for an answer, whether I can use Xtol with one of the "bad" date codes, still in a sealed bag. Or is "trade concern" just another expression for "We don't care, just wait and then buy some more bags"?

Yes, I like A49 (1+1 dilution for one-shot processing) with Delta 100 and 400. This developer is just perfect, as you can take the same develepment time for both of them: My recommendation: D400 @ real ISO-400 or D100 @ real ISO 200 (!!), both with rich shadow detail 18 min. (forget the A49 data...

Hi Ray, * the ISO-P rating gives the speed of the paper: double ISO value means half of the exposure time. Unfortunately exposure meters that are calibrated in ISO-P values are hard to find. This ISO-P value has nothing to do with the ISO rating of your rolls. * the ISO-R rating gives the...

You are right, Rodinal 1+50 is pretty dead after 18-20 minutes.

HP5 and Rodinal are a fine combo, not as grainy as you might expect. You will have real ISO-400 with nice tonality and shadow details. My data are: Rod. 1+50, 20 degC, 18:00 Min., inversions every minute, G=0.62

Not all Tetenal papers were from Agfa. Tetenal Vario Comfort = Ilford Multigrade IV Tetenel Vario Ultra = Agfa MCP and new: Tetenal Vario = Kentmere VC Select I know, all these are RC papers, I have no idea about their fiber base papers - sorry.

Rollei R3 has the same emulsion as Maco Cube 400c, a traffic surveilance film with increased red sensitivity. I had some rolls of the Cube 400c, even developed in the recommended LP Supergrain Developer (=Rollei High Speed) it was terrible! Now I know why I they call this soup "Supergrain". Erich

Hi Matt, better do not take re-usable developers for film, it's difficult to get constant results. Especially for a beginner I recommend one-shot developers. D76 (or ID-11) diluted 1+1 is a good choice for common use, but don't expect too much: The results will be average in every aspect, i.e...