HP5+ at 100 in Perceptol?

[MichaelB]

I guess it had to happen. I did not check the settings and used the film at the wrong setting. 100 instead of 400. After some search I found out, that the film can be saved but with minor setbacks concerning the contrast. With the two developers I have, Microphen and Perceptol, only Perceptol is up to the job. Please correct me if I am wrong. At 20°C this would result in 9min dev time in stock solution. So at the usual 23°C, where I do not have to deal with cooling the stuff prior to development, this would be something around 6-7min. Do you have any advice on how to optimise the results? Any help is very much appreciated. Thanks.

PS: Good to be back.

 

[MikeCassidy]

why do 23°C? you are already pulling why kick the film anymore?

 

[Socke]

Hm, unsure. I usually develop at 20°C and this "summer" I had no big problem with cooling 🙂

HP5 in Perceptol is EI200 anyways, so if you develop for G 0.55 this should cover your overexposure. I'd dilute 1+3 and develop 15 minutes and agitate 3 times every minute.

Edit, at 23°C

 

[gb hill]

Hi Michael, I see that you use Perceptol. I have some that I wish to try in the near future and would like to here your thoughts on it. I haven't found too many people using it. Sorry I can't help with your delema.

cheers
gb

 

[MichaelB]

MikeCassidy
I tried both temperatures. 20°C is no problem but the normal room temperature is 23°C so I use the chemicals at that temperature as long as the dev time does not get to short. Guess I'm just lazy. 😉

Socke
Thank you for the input. I will give it a try tomorrow after work.

gb hill
I am just starting to use perceptol. If this roll comes out ok I will post a scan by the end of the week.

 

[gb hill]

gb hill
I am just starting to use perceptol. If this roll comes out ok I will post a scan by the end of the week.

Thats fine Michael. I bought some off ebay awhile back and all I know about it is it's a fine grain developer. I'm thinking it would be suited for a 50asa film or 100 asa film. I'll be interested to get your thoughts on it especially with HP-5. Good luck with the processing.

 

[MichaelB]

Ok, I've done it as Socke suggested. 1+3 for 15 minutes at 23°C with 3 inversions at the beginning of every minute. Thanks for that. Given that if you add water you add grain the result is better than I expected. So with the stock solution the results should be very interesting. I will expose a testfilm after the Reala comes out of the camera and compare it with the same film developed using Microphen. Some of the negatives seem to be quiet soft, but I don't want to give it a final judgment because of the less then perfect starting point with an overexposed film.
This is a 100% crop of one of the negatives scanned at 1200dpi with my Epson v700.

 

[Socke]

Looks pretty good at this size 🙂

 

[gb hill]

Thats not bad at all. Better than I anticipated it to on what little info I have read on Perceptol.