taking photos from negatives in computer

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krishnaraju.r

I have a negative which is highly black when processed. can i a get a
quality picture out of this negative
 
I have a negative which is highly black when processed. can i a get a
quality picture out of this negative
Click to expand...

Not likely.

Negatives have a dark Orange mask if it is color negative film.
How well does a photo processor (Walmart or some other fast photo shop)
print the negative?
 
When you say "when processed", is the negative black or the print black?
Negative black, indicates excessive over-exposure. Print black indicates no
exposure. If recoverable, you should be able to see some detail by looking
through the negative with a very bright light source.

larry
 
Lawrence said:
When you say "when processed", is the negative black or the print black?
Negative black, indicates excessive over-exposure. Print black indicates no
exposure. If recoverable, you should be able to see some detail by looking
through the negative with a very bright light source.

larry
Click to expand...


Potassium ferri cyanide will reduce the negative.
 
Potassium ferri cyanide will reduce the negative.
Click to expand...


Be careful here - that's some highly toxic stuff!!! I was a chemist
"earlier in life", and I'd not want to play with it now.

Another question - in reading these posts, I can't discern if the
subject negatives are of B & W film or color film. Seems like the
answer might be more relevant if that were clarified.

Olin
 
Be careful here - that's some highly toxic stuff!!! I was a chemist
"earlier in life", and I'd not want to play with it now.
Click to expand...
Olin
Click to expand...

You dont't remember correctly: Potassium ferri cyanide can do no harm at all as
it is a very stable compex salt. You could drink it (I did by accident!) if it
didn't taste horribly.
The danger lies in other stuff like Potassium cyanide - a very poisonous salt
that you cannot obtain freely at the chemist's. Ferri cyanides you can (or is
it out of use?).
Greetings, Alex
 
Alex said:
You dont't remember correctly: Potassium ferri cyanide can do no harm at all as
it is a very stable compex salt. You could drink it (I did by accident!) if it
didn't taste horribly.
The danger lies in other stuff like Potassium cyanide - a very poisonous salt
that you cannot obtain freely at the chemist's. Ferri cyanides you can (or is
it out of use?).
Greetings, Alex
Click to expand...

Yep that's correct its not toxic in as such cyanide.
It just sounds toxic. :)

Used to be able to buy it at photography stores who sold processing
chemicals - as Farmers Reducing Agent.

Potassium Ferricyanide - Farmer's Reducer

Ingestion Haz - Moderately toxic
Inhalation Haz - Slightly toxic
Skin Haz - Slightly toxic

This is not unlike most photographic chemicals.
 
(e-mail address removed) (Olin K. McDaniel) wrote:



You dont't remember correctly: Potassium ferri cyanide can do no harm at all as
it is a very stable compex salt. You could drink it (I did by accident!) if it
didn't taste horribly.
The danger lies in other stuff like Potassium cyanide - a very poisonous salt
that you cannot obtain freely at the chemist's. Ferri cyanides you can (or is
it out of use?).
Greetings, Alex
Click to expand...


OK, I'll not engage in an argument, as stated earlier my experience in
the chemical industry ended with retirement some 20+ years ago. You
may be completely correct, but just as a habit anything with cyanide
in it automatically raises my caution flag.

But they still failed to state whether this suggestion applies to a
B&W negative or a color negative.

Olin McDaniel, retired Staff Engineer, DuPont Corp.
 
Olin K. McDaniel said:
OK, I'll not engage in an argument, as stated earlier my experience in
the chemical industry ended with retirement some 20+ years ago. You
may be completely correct, but just as a habit anything with cyanide
in it automatically raises my caution flag.

But they still failed to state whether this suggestion applies to a
B&W negative or a color negative.

Olin McDaniel, retired Staff Engineer, DuPont Corp.
Click to expand...

I believe this is what the OP is looking for.
Kodak Farmer's Reducer.
http://www.adorama.com/KKFR.html

Its chemical name is potassium ferricyanide for Part A and Part B is hypo.
It is a chemical that has been used in Photo labs for Years and Years.

It is used on Black & White films and prints.
http://www.calumetphoto.com/item/KP03014.html

Color film uses dye, where B&W film is silver based.
 
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