[pure-silver] Re: 60 mm WA Enlarging Lens on an Omega B-8
- From: Bob Younger <ryounger@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Wed, 24 Oct 2012 19:04:30 -0700
Ken,
Probably would. But I'd also like to see if the lighting was even across
the whole print. Of course you could do this as well with a meter; just
divide the area of the print into say, 2x2" squares, and measure the light
in each square. This approach is actually FAR more quantitative than making
a print. It just doesn't necessarily provide you with the visual
understanding of what's going on. You're going to have to interpret what
the readings mean. On the other hand, the readings with a meter AND the
print get you BOTH!! You'll understand what variations in the quantitative
measures make a noticeable difference in the print values.
Bob Younger
On Wed, Oct 24, 2012 at 6:10 PM, K W Hart <kwhart1@xxxxxxxxxxxx> wrote:
> **
> Good suggestion. A question: if you had an enlarger exposure meter, so
> that you could meter the light at the center and the corners, would that
> eliminate the need to make a print?
> Ken Hart
> kwhart1@xxxxxxxxxxxx
>
> ----- Original Message -----
> *From:* Bob Younger <ryounger@xxxxxxxxx>
> *To:* pure-silver@xxxxxxxxxxxxx
> *Sent:* Wednesday, October 24, 2012 8:28 PM
> *Subject:* [pure-silver] Re: 60 mm WA Enlarging Lens on an Omega B-8
>
> One suggestion.
> Put in a negative and focus as though you're going to make a 16x20 print.
> Take out the negative and make a 16x20 print such that the center of the
> print is middle grey. Develop normally. Wash.
> Now look at it and see if there is any noticeable fall-off at the edges
> and/or corners. Better yet, use a reflective densitometer to measure
> reflectances across the print. Now (assuming that everything's even) you
> can make prints without worrying about uneven light across the print. On
> the other hand, if you find that there is unevenness, you can make a couple
> of other tests and determine what percentage of fall-off you need to
> compensate for to get an even print.
> Have fun.
> Bob Younger
>
>
>
> On Wed, Oct 24, 2012 at 3:07 PM, Marvin <marvbej@xxxxxxxxxxxxx> wrote:
>
>>
>> The Schneider 60 mm W.A. Companon I bought on ePrey arrived today
>> and seems to work OK with the basic condenser on my Omega B-8. It looks
>> like I could make prints up to about 22-1/2" wide from 2-1/4 X 2-1/4
>> negatives and, more important, make 16 X 20s [actually 15 X 19s, with 1/2"
>> borders] with some room for cropping. I haven't actually made any prints
>> yet, but will report back with the results ASAP.
>>
>>
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