twelvetone12
Member
I think what OP is saying is don't wash after stab, which we can all agree is not good. My doubts are if washing before the stab brings any advantage with this kit. I wait for Bellini to reply.
Kodak invented the C-41 process, and their official process uses a water wash after the fixer followed by a stabilizer or final rinse which certainly isn't detrimental to the film or they wouldn't do it, don't you think? You can bet they have done longevity tests, and have stuck with this method over others. What testing has BelliniFoto done?
In any event I believe the Kodak method to be superior.
It's not unwashed, the wash and stab are combined, maybe you should take it up with Bellini whose business is Photographic chemicals for video and stills production, I'm pretty sure they'll have professional chemists working for them.I have not read this entire thread, but know it is pretty much wrong in the idea of omitting the wash.
Kodak says that a wash can be left out, but generally these processes are for throw away negatives intended for digital scanning. Remember, if you take film in now, it is not returned in most cases. Instead, you get a DVD. This process is washless and the stabilizer is intended to "clear" the film for this. If you use a wash, the stabilizer acts to preserve the image. So, it is an option.
Unwashed film can go bad!
PE
-) nobody questioned Bellini's expertise. Actually they have been recommended by us in the past
-) "washless" is standard term in the photochemical industry describing certain special-C-41 processes where after fixing the film is washed in a bath containing a special compound. This washing step is shorter and different from the one in standard-C-41
-) in amateur processing there is no need for deviation from the standard procress
You seem to be putting a lot of faith in these anonymous experts. We have a non-anonymous one right here who has already weighed in on the subject. If your main interest is scanning and your negatives are disposable, then a kit like this is probably fine. If you want negatives that will last a long time, then a kit like this is highly suspect for reasons you chose to ignore. And unless I missed it, your experts are silent on that subject.Do feel free to question the expertise of a Company with nearly thirty years of experience producing chemistry for the stills and video industry, I'm sure they'd welcome the expert input from anonymous on the internet. To be honest, it's not a tough decision for me to follow their instructions for chemistry they produce as opposed to the undiscovered chemistry experts posting on an internet forum.
You seem to be putting a lot of faith in these anonymous experts. We have a non-anonymous one right here who has already weighed in on the subject. If your main interest is scanning and your negatives are disposable, then a kit like this is probably fine. If you want negatives that will last a long time, then a kit like this is highly suspect for reasons you chose to ignore. And unless I missed it, your experts are silent on that subject.
Let the buyer beware.
I have no theory, nothing to prove, and nothing to sell. The manufacturer makes no claim that the negatives processed using their kit are archival. Let's hear why you think they are.I'd hardly call a chemical production company with 30 years experience, that has a stand at Photokina, "anonymous" compared to actual anonymous on the internet. Of course, if you can produce any kind of fact based evidence in the form of peer reviewed white papers to substantiate your theory I'll happily ask Bellini for comment.
That maybe so, but it doesn't mean he's right. I tend to think a Company whose sole business is the production of Photographic chemicals who have been successful for the last 30 years know what they're talking about. When did Kodak last produce new developing chemistry?Well, PE is not "Fred Bloggs", he is an actual retired engineer from Kodak that worked many years on developing these color processes. I personally value his opinion (and time and effort he puts replying us) greatly.
In any case I wrote to Bellini asking for their stance on the subject, I will post the reply.
EDIT: darn autocorrect
Based on? it's Kodak? the company itself didn't survive, only the name did, they weren't good enough to adapt to the modern world, they weren't able to innovate, they had to rely on someone else buying them out.
I asked first, if you can't answer then just say so instead of trying to avoid the question.I have no theory, nothing to prove, and nothing to sell. The manufacturer makes no claim that the negatives processed using their kit are archival. Let's hear why you think they are.
I just stated the question -- the only one of interest here. You can play word games with the others. Have a nice day.I asked first, if you can't answer then just say so instead of trying to avoid the question.
Based on 30+ years of using and reading about the C-41 process, and noticing that some negatives I had done at minilabs have developed color problems over the years while anything I had processed by Kodak shows no signs of degradation. Some of the reading was done here at Photrio, posts by none other than PE above who worked at Kodak for years working with, among other things, the C-41 process.
There are companies out there who make C-41 processes that use a bleach-fix instead of a separate bleach and fix, and some who advocate low temperature C-41 processing, both of which has been known in the industry to produce inferior negatives, yet they still produce them, things Kodak and Fuji never did. Just because BelliniFoto does things a different way doesn't mean it is a good way. Lacking any meaningful test results or other evidence I would always trust and use the official process for best quality. One may chose to accept lesser quality, but one should be forewarned!
I think I can summarise that as "hearsay", I'm open to the fact that it may be correct, but I'm also open to the fact that Bellini know what they're doing, considering I've never heard any complaints about their process, in fact quite the opposite. I've certainly never seen any evidence that negatives produced using their process have any issues.I can't tell you how many times I've read that how vigorously you agitate your negatives during Dev affects the size of grain yet I've seen a test that proves the complete opposite.
I'll take that as a "I have no answer" then.I just stated the question -- the only one of interest here. You can play word games with the others. Have a nice day.
There are companies out there who make C-41 processes that use a bleach-fix instead of a separate bleach and fix, and some who advocate low temperature C-41 processing, both of which has been known in the industry to produce inferior negatives, yet they still produce them, things Kodak and Fuji never did!
I'll take that as a "I have no answer" then.
Not quite right.
Fuji for instance explicitely refer to these washless special special processes and give processing tables for their products, but nevertheless refer to them as special. At the moment, at least in Europe, they even only offer a stabilizer for the specialized processes! No standard final rinse.
This seems in line what Bellini are offering.
There are a variety of C-41 processes and processors.
And meanwhile only the Minilab processes seem to be cared for.
I do have an answer however. I know both the chemistry of the film and the process, and I know chemistry itself. I can say that a so called washless process courts disaster. Is there anyone here that would process B&W prints with no wash? Just dunk in some toner or in some wash aid several times and dry! Yeah, that's going to work just fine. Your film is loaded with salts and when you dry it with no wash having been performed, where are the salts going to go? They are retarded from crystallization for a time, but eventually, crystals begin to form, along with a brown stain. BTDT.
AAMOF, a plain old chemical similar to Fosamax, the drug for retarding osteoporosis can be used to complex every metal salt and render the film "colorless" with only a normal Dmin. Yep. However, what about the salts in the long run. Well, my research project on this subject was stopped with the comment "no one would want to have unwashed film", but that was then (~ '76) and this is now. Oh, and even back then, my process had a wash in it just to be safe.
Do you want to handle negatives (even by the edges) that contain CD4, Diethy Hydroxylamine Oxalate, Hypo, Silver halide salts, and a host of other things such as Ferric PDTA and Ammonium Thiocyanate? That will be left in the film, even with "washes" in the stabilizer. This is because the ionic influences of the stabilizer will inhibit outward diffusion of the junk you don't want.
So, have fun and ignore my nearly 60 years in photography, 32 of them in Kodak R&D, and degrees in chemistry. I would love to be around in about 10 or so years to see your expression and hear you yell.
PE
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