I would think .1 or less stops. You can also build a day light enlarger then use tubes to process that can be loaded in changing bags. Not ideal but better then not printing.
From my Android phone on T-Mobile. The first nationwide 4G network.
-------- Original message --------
From: Kostas Papakotas <clenchedteethphotography@xxxxxxxx>
Date: 07/14/2013 11:51 AM (GMT-05:00)
To: List for Photo/Imaging Educators - Professionals - Students <photoforum@xxxxxxxxxxxxxxxxxx>
Subject: Σχετ: Enlarger question (Vignetting)
@karl:
"do you have a densitometer?"
no, but it seems the same function will be done with my lightmeter.
no, but it seems the same function will be done with my lightmeter.
i initially thought of comparing the two ends of a print side by side....
@RsLittle
Damn! I am out of shape! I do have a light meter that I use for my flashlight measurements (it goes up to 20K lux)...So it is a matter of just measuring lux output on the center and edges.
that bears a new question. Since there will be some light off, how much (in percent) is too much?
the light meter way we will also circumvent the need to print cos we are "homeless" again (the club) and store materials in a members living room.. (hard to ask it again to turn it into a darkroom, camera obscura was enough)
Why do you need to print or use s densitometer? A ambient light meter will work. Meter middle then meter at edges. You can always convert to diffusion light sorce. I still print with a 1950-60s flying saucer looking fluorescent diffusion enlaeger with modern lens that I love. Sort of love. The prints are great the enlarger is a bit of a bear to use.
From my Android phone on T-Mobile. The first nationwide 4G network.
-------- Original message --------
From: karl shah-jenner <shahjen@xxxxxxxxxxxx>
Date: 07/10/2013 3:28 AM (GMT-05:00)
To: List for Photo/Imaging Educators - Professionals - Students <photoforum@xxxxxxxxxxxxxxxxxx>
Subject: Re: Enlarger question (Vignetting)
----- Original Message -----
From: "Kostas Papakotas" <clenchedteethphotography@xxxxxxxx>
To: "List for Photo/Imaging Educators - Professionals - Students"
<photoforum@xxxxxxxxxxxxxxxxxx>
Sent: Wednesday, July 10, 2013 2:51 PM
Subject: Σχετ: Enlarger question (Vignetting)
karl, and the rest of the group.
With enlarger in our hands, I have a new question on thestign for
vignetting.
(I coudl not find any guide with googling)
Si the test donw without or with a negative?
If a negative is used how dense should it be?
and I assue that the lens should be stopped down?
without a negative should work, and it's probably worth trying it at all
stops. Just use thin pieces of paper for the test too, and expose for a
moderate grey tone
do you have a densitometer?
karl
