Some new 120 stuff

[Kirk Keyes]

Sounds cool. Maybe make a section on 120 film making for Vol.2 of your book.

Kirk

 

[Photo Engineer]

I see now that the roll of acetate is about 5mm wider than a 120 roll, so that gives you some selvedge. However the blades look even wider than the roll, but they don't look like 8", more like a bit under 3". Are they going to work with this roll of acetate?

Yes, it will work. I've already tested it in dry runs.

PE

 

[jerry lebens]

Sounds like including the selvedge in the image might produce an interesting effect. How about coating some actual 120 size acetate and not trimming the edges..?

Regards
Jerry

 

[Photo Engineer]

Jerry;

That is an interesting idea, but the selvedge makes the coating a tad overwidth by my measure, so it will have to be trimmed. In any case, it might just leave a black line down each side. IDK. I may try. This is months in the future.

Thanks.

PE

 

[R Paul]

Hello PE

If you don't mind me asking, where did you get the acetate base? I am assuming that it isn't an off the shelf item.

Just think-- homemade 120 film -- I will start saving my backing papers now
rob

 

[Photo Engineer]

This is not off-the-shelf, and IDK where I might get another roll. It was a sample given to me.

PE

 

[kb3lms]

Hey, how about this "Plastic Cake Wrap" for acetate base? See the link below:

http://www.amazon.com/Plastic-Cake-Wraps-500-Foot-Roll/dp/B001AEMDL4/ref=pd_sbs_k_3

(If the link doesn't show correctly, I entered "acetate roll" at Amazon)

I admit to not knowing much about this but I know I had seen something like the roll of material in the picture and was able to find it again. It is available in several different widths and sheets also seem to be available.

The same sort of thing is listed at www.bakedeco.com. Google "cake wrap" or "cake collar" for more listings.

And if this is all out in left field, well... then "never mind." (think "Emily Latella" here)

 

[Photo Engineer]

Probably left field!

The acetate must be subbed with a material that is "friendly" to the acetate and to the film, otherwise the emulsion will not stick.

Thanks anyhow.

PE

 

[kb3lms]

LOL, there's always a a catch! I didn't think about that. What do you need to do for "subbing"? From your comments in the forums I guess it isn't something easy to do?

 

[Photo Engineer]

I have a formula for subbing here somewhere. It involves organic solvents mixed with organic polymers and gelatin along with acetic acid. Basically, it is both hydrophobic and hydrophylic or you might say it has a bipolar disorder.

It does require a fume hood and lots of ventilation to coat.

Estar subbing is entirely different than Acetate subbing. Estar often requires electron bombardment to give it a tooth. See posts by HRST.

PE