EFKE 25 & Adox APH09

[Alan9940]

Hello All:

New user of APH09, though I used quite a bit of Rodinal back in the day... I'm thinking of using a 1:75 or 1:100 dilution of the APH09 to develop this film and I'm sure there must be some minimum amount of the stock developer needed per 36-exposure roll. Does anybody know what that minimum might be?

Thank you for your help.

Best regards,
AlanH

 

[Rick A]

MDC recommends using the Rodinal chart for times and dilution.
http://www.digitaltruth.com/devchart.php?Film=Efke+25&Developer=Rodinal&mdc=Search&TempUnits=C

 

[darkosaric]

Hi Alan,

APH09 bottle that I have (older one) - stated that you can dilute 1+200 - half liter up to 333 films; so for 0,7l that is 3ml. I use 7ml for 2 films all the time and no problems whatsoever. I used a lot of efke films in the past, be careful not to overexpose too much (one of rare B&W films that are not ok to overexpose), and do not agitate too strong - contrast goes up very fast. As a stop bath use plain water, no acid.

 

[Alan9940]

Hello Darko,

Thank you. That was exactly the info I was looking for! But, given that my 35mm only tank is only about 240ml (8 oz) it sounds like I should use a 120 size tank to ensure proper concentration of the APH09? Or, maybe my Paterson System 5 tank for 35mm holds more liquid than my stainless tank. I've never used it because I found it difficult to wind 35mm film onto that plastic reel. I'm probably the only one in the history of that tank that can't load that reel without damaging the film! Maybe I'm just too used to my Hewes ss reels!!

Yeah, I've read quite a few places to not over-expose this film. And, yet, I just found a reference on unblinkingeye this morning where EI 12 was recommended when souping in Rodinal 1:100. Out of curiosity, do you remember what EI you used for this film?

Thanks, again.

Best regards,
AlanH

 

[Rick A]

I've never had an issue using a single reel 35 mm stainless tank at 1+100, although I normally use 1+50. I always lose one full stop with Rodinal.

 

[darkosaric]

Yeah, I've read quite a few places to not over-expose this film. And, yet, I just found a reference on unblinkingeye this morning where EI 12 was recommended when souping in Rodinal 1:100. Out of curiosity, do you remember what EI you used for this film?

Box speed, iso 25.

Here are couple of examples in Rodinal 1+100 (semistand 1 hour: agitation on start, 20min, 40min):

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Rodinal 1+25, 4-5 min developing (it was long time ago, now only 1+100 with iso 25 films):
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[Alan9940]

Darko,

Thanks, again, for all your help.

Best regards,
AlanH

 

[darkosaric]

BTW - info about not overexposing efke films I got from the producer itself, I lived in Croatia for more than a 15 years, I was regular guest in Fotokemika factory .

 

[MDR]

Efke 25 really doesn't need a lot of compensating effect 1:50 works very well for the film as it is not as contrasty as Pan F. It also has two film speeds a tungsten and a daylight one the tungsten speed is 25 and the daylight speed is a bit more some claim Iso 50 Iso 32 is more likely though. The different film speeds can be explained by the lower red sensitivity of the lower speed Efke emulsions. Be careful when using red or orange filters as it needs more compensation than standard pan films. As Darko said don't overexpose the film it really doesn't like it underexposure it handles quiet well.