Posts tagged “dakroom

Junghans Darkroom Timer

/startofsillypost This is a rather silly post but I am so happy with this haha! After having seen and used this item at the dry plate workshop from Jeroen I just had to frantically look for one when I got back home. I did (of course; if i have my mind set on something I will get it) and I found one so…here it is, all the way from Ireland, my Junghans all-mechanical darkroom timer 😉



Push & Pull Development

I always keep forgetting this formula, mostly because I hardly ever use it, but every once in a while I do need it and then it’s tucked away so deeply in my brain I can’t find it. So, for once and for all, here it is:

UnderExposure – Pushing
ISO 100-200 = 1 stop underexposure = 20% increase of Development Time
ISO 100-400 = 2 stop underexposure = 50% increase of Development Time

OverExposure – Pulling
ISO 400-200 = 1 stop overexposure = 10% decrease of Development Time
ISO 400-100 = 2 stop overexposure = 20% decrease of Development Time

For more specific development times and films vs. developers look here: