GEVAERT G.33 Soft Developer

[Kino]

Kino submitted a new resource:

(there was a url link here which no longer exists) - GEVAERT G.33 Soft Developer

Soft-working film developer with extended shadow detail

Mixing instructions: Add chemicals in specified sequence.

Dilution: Use undiluted

Starting point development time: 8 mins (tray), 14 mins (tank)

Just mixed a liter tonight, going to try it tomorrow with Arista EDU Ultra 120 in 100 and 400 ASA and try 14 minutes for roll tanks.

(there was a url link here which no longer exists)

 

[Kino]

Forgot to add; used .83 g of Sodium Bromide instead of 1g of Potassium Bromide as per substitution table in Anchell's DRCB.

 

[Kino]

Examples of neg scans in B&W darkroom...

 

[Kino]

All films shot at rated ASA/ISO speeds.

For Arista Edu 100 -- I suggest 14 minutes with 15 sec. agitation per min.

For Artista Edu 400 and Ilford Pan F 50-- I suggest 12 minutes with 15 sec. agitation per min.

Kodak TMax 400 -- not recommended

The effects of extended development depend heavily upon the stock, but tend to work best on slower, old-style emulsions.

 

[Kino]

Ilford HP5 -- somewhere in the vicinity of 12 minutes -- YMMV

 

[titrisol]

Do you have a reference for this?
I looked in the Gevaert manual and Taylor&Taylor photo lab-index but cannot find such recipe

 

[Kino]

Do you have a reference for this?
I looked in the Gevaert manual and Taylor&Taylor photo lab-index but cannot find such recipe

Well, I will have to pile through my books again, but I DO know it is posted on the Digital Truth site in their formulas section online.

 

[titrisol]

I think there is something wrong in the numbering, film developers had numbering 210-230s, paper developers 250-260s. So it maybe 233?
The only one I've found that is close is G212
* Water, 125F/52C 750 ml
* Metol 2 g
* Sodium Sulfite (anhydrous) 25 g
* Hydroquinone 1.5 g
* Sodium Carbonate (monohydrate*) 35 g
* Potassium Bromide 0.5 g
* Cold water to make 1L

Given the amount of Metol, this should be quite vigorous? or am I wrong?

 

[Tom Hoskinson]

There is a Gevaert GD-33 formula on page 84 of Morris Germain's Darkroom Handbook and Formulary, published by Ziff-Davis 1940.

This Gevaert GD-33 formula is identical to the one posted by Kino.

 

[Kino]

Thank you, Tom. I knew I wasn't crazy... well at least in that respect...

I think mine came from a Focal Press book from the Mid to late 30's that I can't lay my hands on again to save my life. It is part of a two volume set; one is "Developing", the other, "Enlarging".

 

[titrisol]

Thanks a lot!
conundrum resolved
Those Focal Press books were good, I gave mine away a couple of years ago.

 

[Kino]

I think there is something wrong in the numbering, film developers had numbering 210-230s, paper developers 250-260s. So it maybe 233?
The only one I've found that is close is G212
* Water, 125F/52C 750 ml
* Metol 2 g
* Sodium Sulfite (anhydrous) 25 g
* Hydroquinone 1.5 g
* Sodium Carbonate (monohydrate*) 35 g
* Potassium Bromide 0.5 g
* Cold water to make 1L

Given the amount of Metol, this should be quite vigorous? or am I wrong?

Sorry, Tom; I did't see this posting for some reason...

The experiences I have had (admittedly few) so far, are that it does produced denser than normal negatives, but the detail doesn't block up as much as say D76.

I haven't had time to do a real controlled comparison, or to even print the negatives I have developed so far, so I am afraid I am not much help in this regard, Sorry!

However, what I have seen from neg scans looks promising for subjects that can profit from a longer gray scale and diffuse grain structure.

 

[titrisol]

Well the amounts of metol and HQ are very low, and the re is more M than HQ so me was wrong in the initial asusmption.

yes this shoul dbe very soft acing, with nice detail in shadows and highlights that do not block

 

[Ian Grant]

I agree with Titrisol, there's definitely something wrong here. It needs checking in the Gevaert manual of photography.

Kino, I think the books you are referring to are by Jacobson. I have them in the UK.

 

[eclarke]

I have seen Germain ridiculed at times, don't know why, but his little book is one of my favorites..Evan Clarke

 

[Ian Grant]

There is 33 Gevaert Developer as Kino states in the first edition of Jacobson , Developing (1940). It's in table XV and is a fine grain developer roughly equivalent to D76 but it uses Rescorcin as well as Metol & Hydroquinon.

Jacobson's number just means it's the 33rd formulae lised in the book, he doesn'y actually give the Gevaert formula number.

Developing was the earliest Focal Press book to list any formulae, the company was only founded a year or so before and like the founder the two major writers Jacobson and L.A. Mannheim were all emigres from Nazi Germany.

One problem is that prior to the 1930's formulae many were often published without a reference number by all companies.

Ian