120 film developing

[steven_jhonson]

I was wondering if you could give me a good site that tells you how to develop 120 black and white film. I am very good at developing 35mm film but have never developed 120 so I need the low down on the entire process. I know that its mostly the same as 35mm but my main conceren is getting CLEAN NEGATIVES. The `120 film is bigger and more likely to get water spots on it. Should I squeegee(something I hate doing doesnt seem safe for the film) or use photoflo (which works half the time)Please if you can help I would be very greatful. thank you.

[pat_j._krentz_29_palms__ca]

I never squeegee film, the process is the same for 120 as 35, I use

photo sponges without the photoflo and have not problem with

water spots. I think you will like the larger neg. Regards, Pat

[thomas_wollstein]

We have discussed this problem several times on this list, so it might

be convenient for you to browse the older threads.

 

<p>

 

Anyway: Here is a brief description of how avoid drying marks on film:

Process as usual up to the final washing. Then DON'T SQUEEGEE! This

might give you clean negatives, but it will also give you scratches.

Instead, use a wetting agent in distilled or demineralised water. Then

run to the kitchen accessories store to buy a small hand centrifuge

for lettuce. Put in the reel with the film on one side and a suitable

balance on the other. Whip of virtually all of the surface water by

spinning the film for about half a minute or so. (To your arms, this

half minute may seem an eternity!) There will not be any drop left on

the film after this.

[christian_harkness]

I think Pat's being able to get by without a wetting agent must have

to do with his water supply. I simply am not able to do that, no

matter how I treat my film otherwise.

 

<p>

 

chris

[brian_hinther]

As the other posters said, same as 35mm. I always use hardener in

my film fixer to guard against scratches. Make sure you're using the

right amount of PhotoFlo--1 small capful to 20 ounces--agitate for :15

to :30, then hang 'er up and let 'er buck. Never touch the wet film

emulsion with anything; it gets enough crap in it by itself.

[david_futch]

I have been down this road and Photoflo is a nightmare to work with

on 120 film. You will never seem to get water spots off of the neg.

Use Edwal LFN (wetting agent) from Abbey Camera and you will not have

to squeegee at all. Just dry in a dust free place.