AGFA APX (new) - and Ilford PERCEPTOL developer

Joachim · 2015-04-08T10:44:44+00:00

Guten Tag zusammen, nach 30 Jahren will ich es wieder machen: Entwicklung in S/W Meine Frage: Welche Erfahrung gibt es mit dem AGFA APX neu und dem Ilford...

Joachim

Hello everyone, After 30 years, I want to get back into it: black-and-white film development . My question is: what experience have people had with the new AGFA APX and the Ilford PERCEPTOL developer? Or what would you recommend? – What is the mixing ratio for the stock solution? – What are the development times (at 20 degrees)? – Is there anything else I should bear in mind? Many thanks for your feedback. Joachim

wosis123

Apparently it contains 100% Kentmere; why not give it a go: http://www.digitaltruth.com/devchart.php?Film=Kentmere&Developer=Perceptol&mdc=Search&TempUnits=C

Otto

The new APX100 produces a textbook-perfect characteristic curve when used with Microdol-X (identical in composition to Perceptol). Here are the key figures: Exposure 19 DIN / 64 ASA; dilution 1+3 (at least 100 ml of stock solution per film); Temperature 24°C, agitation 15/30/1x (agitate for 15 seconds, then once every 30 seconds); development time 13.5 minutes To ensure you start at the correct temperature, we recommend a pre-rinse of around 2 minutes using water at 24°C. Good luck and best regards, Otto! PS: You can convert development times here: http://www.fotografie-in-schwarz-weiss.de/sw-fotografie/online-rechner.html

HenningH

Hi Otto, Do you know how the film performs at 20°C with a correspondingly longer development time? Best regards, Henning

Otto

Hello Henning, ? For various reasons, I prefer to develop at 24 degrees. I wouldn’t expect any problems if you switch to 20 degrees and extend the times accordingly. Perceptol contains metol as its sole developing agent. Developers with only one developing agent are usually quite tolerant of temperature changes. Metol is known for developing well even at lower temperatures than usual. Problems are more likely to arise if you increase the developing temperature (greater fogging). ? Best regards, Otto!

Joachim

Subject: APX 100 (new) and PERCEPTOL developer € Hello Otto, € I have now exposed three rolls of APX 100 (new) at 21 DIN . € Earlier on, you mention: - Exposure at 19 DIN - A development time of 13.5 minutes - A development temperature of 24 degrees - A dilution ratio of 1:3 € How does that apply in my case: 1. Exposed at 21 DIN? --> Exposure time? 2. Is there no fogging at 24 degrees? 3. What exactly do you mean by ‘tilting’ for the first 15 seconds? € Thanks for any further advice.

Joachim

Hello everyone, ? Would anyone like to answer the question I asked earlier? ? I’m completely lost here. As well-meaning as some of the replies are, they sometimes stray from the point of my question; I’m sure that’s not intentional, but it doesn’t really help me – it just confuses me (at least from my perspective as an outsider). ? As I said: I haven’t developed film myself for 30 years – back then I used to develop thousands of photos for the press. What used to be a breeze for me seems to have slowly turned into a bit of a science – at least that’s how it feels to me. ? It would be great if I could just have the information I need to develop my exposed APX 100 (new). ? Thank you.

ThomasPauly

As mentioned earlier, APX 100 (new) is identical to Kentmere 100. The Kentmere website features a data sheet that includes, amongst other things, the desired combination of 21 DIN / Perceptol: http://www.kentmere.co.uk/Webfiles/20091291713401332.pdf. The times are identical to those in the Massive Development Chart referred to above. I have always used the development parameters from the Harman data sheets without modification and have had good results with them. € Although Perceptol delivers optimal overall quality, it typically reduces sensitivity. Developing to the nominal sensitivity of 21 DIN is, in this case, effectively a push development – with the possible undesirable side effects (loss of shadow detail, hardening in the highlights). If the film exposed at 21 DIN is already available, I would tend to use ID-11, which develops at nominal sensitivity (time/temperature/agitation rate also given in the Kentmere data sheet), or another standard developer. Most instruction manuals also include the times for the K100 and its private-label clones APX 100 (new), RPX 100 or CHM 100. € Regards € tepe €

grommi

Hi Joachim, perhaps the Agfaphoto data sheet might be of some help to you. Strangely enough, it’s not available on the German site: http://www.pirate-photo.fr/documents/films/Agfaphoto-APX-100_New.pdf € And I’ve also shared my thoughts on the APX100 New in a neighbouring thread, but I don’t want to hijack your thread here: http://forum.FOTOIMPEX.de/index.php?showtopic=3352 € Happy shooting – Reinhold

Joachim

Hello Tepe, Hello Reinhold, ? Thank you so much for your help! It was worth my while to keep asking and not giving up. Using your information, I’ve now developed my new AGFAPHOTO APX film. The results are stunning – better than I could have imagined! I’ve never achieved such excellent results before! ? - Ilford Percetol developer 1:1 - Temperature: 20 degrees - Agitated constantly for the first minute - then once every 30 seconds - Development time: 13.5 minutes ? It’s a shame you can’t post a photo here (or can you...?).