Beef
Hi,
I’ve been using the 9x9cm Variokontrast filters available here in the shop for a short while now.
I always hold the filters by the corners and place them under the enlarger lens on the red filter holder.
Now I wanted to give the filters a clean, as they’ve picked up all sorts of fingerprints and dust over time. When I applied moisture to the filter film, I had to stop cleaning straight away!...The colour came off...and that was just with water! It feels a bit like the gelatine layer on a negative when you soften it with water.
What’s the point of that?! Can you just throw the filters away every month and buy new ones, or is there a way to clean them?
Regards
Andi
cfb_de
Hi Andi,
These filters aren’t cleaned. You simply buy new ones and enjoy the consistency of the filter performance.
Note: Gelatine filters have to handle everything. Except water. Everything washes out of them. That’s why the data sheet states that you shouldn’t soak them.
Best regards,
Franz
Beef
Hi Franz,
Thanks for the info. But I do wonder how anyone would come up with the idea of using gelatin for this :huh:
Next time, I’ll buy the large filters and place them over the frosted glass at the top of the lamp... a bit of dirt won’t make much difference there.
Best wishes,
Andi
MirkoBoeddecker
Hi Andi,
Why don’t you suggest an alternative colloid that can be applied using a cascade coating process, is water-soluble (otherwise it could only be applied in a protected facility), costs next to nothing, is compostable and non-toxic, and doesn’t react with the colorants?
No, joking aside. The filters are very inexpensive and any other known manufacturing method would increase the price tenfold. Just try not to splash water on them and clean off the dust with a camel hair brush or microfibre cloth. Film cleaner can also be used to some extent for stubborn dirt.
Best regards,
Mirko
cfb_de
Mirko,
FACK. (For those unfamiliar with Usenet, this means: "I couldn't agree more!")
Best regards,
Franz
