[simonechoulle]

Thanks a lot for your help John, as always.
Merci beaucoup !

[simonechoulle]

Some more …et voilá !

Attachments:

You must be logged in to view attached files.

[simonechoulle]

the ” collection ” :

Attachments:

You must be logged in to view attached files.

[simonechoulle]

Hi all,
Here is a little “collection” of our various black spots, taken from a bad miscroscope.

We continue doing tests and reading, changing lots of variables, even plate provider…still we do have some.
We’ve started the developpement from very cold, for a test, and it did increase huggely the amount of spots.
We went back to a 85/90 degre developpement…
from the same plates, a becquerel comes casi perfect.

We keep you informed when progress are coming !

Best regards

Attachments:

You must be logged in to view attached files.

[simonechoulle]

Hello John
Thanks for your answer but all you said was done! We solved the problem increasing the temperature from 60ºC to 80ºC and develop for 4 minutes instead 10 minutes and those very circular spots disappear!
We only had those spots with Mdag not with Bdag.
Best!
Simone

[simonechoulle]

Hi

Problems solved. It came from 2 lenses symmar, a 210mm and a 165mm (barrel type). We used lens hood. We’ve tested the fogged plates with a tessar and an Heliar (small lenses) and no fog.
I use the symmars for collodion and no fog problems.
Can it be a return reflection on dag…we will keep small lenses for dag.
Thanks

[simonechoulle]

Hi Jalo

They look burned! And for a second cycle still look contrasty! I will reduce exposition of 1 stop to 1 1/2 stop.
Tests tests tests more testssssssss………….
Simone

[simonechoulle]

Hi all,

I succeed to make images on the plate that fogged: I reduce exposure and developing time (1 stop less than usual), 30 minutes development under amberlith. I will do more tests and post them

Attachments:

You must be logged in to view attached files.

[simonechoulle]

Hi Motamedi and Mike
Thanks for your answers…we tried to talk to him but no way he’s very hermetic!!
We will try the plates with shorter time for developement.

Next step find another plater in Spain…
Good dags!!

Simone

[simonechoulle]

Hello, thanks for replying! We wil be in New York until the end of the ImageObject exhibit,
from the 2 to the 17 of april…as we did not had any reply before, and traveling now, we just brougt with us
plate for Hasselblad size, 2,2×2,2 inch…thanks for ur post, hope to see you tomorrow.Simone

[simonechoulle]

watch the video | Part Two

[simonechoulle]

watch the video | Part One

[simonechoulle]

Bonjour !

So i made new tests in accord with your advices.

First, I clean better my plates, but I have to improve !

Second, I increase the Becq. development : 5 hours to day light

Result, the clear stains disappear !!!!! And the blue tone faded !

So Irv you were right and I thank you for your great help !

The test…the camera moved when I put the film holder, so the focus is pityfull!!

The plate was an old gilded test that I tried to polish again, I think I can improve.

Does anyone have an idea how to erase all from a gilded plate ?

Data for the test :

Iodine magenta/purple first cycle

EV11

f5,6 – 20 minutes

Fix 8 minutes

5h dev under 2 layers of rubylith, the image begins to appear after 8 minutes only the white background

Gilded

The coat of the virgen is made of red velvet !

Next time I’ll post a dag not a test !

Thanks for all

Simone

[Author]

Posts