[rollei_list] Re: Rodinal, TMax, scanning

  • From: CarlosMFreaza <cmfreaza@xxxxxxxxx>
  • To: rollei_list@xxxxxxxxxxxxx
  • Date: Mon, 21 Mar 2011 10:58:25 -0300

I only could say I share the same experience with Sanders regarding to
scan underexposed negs as I wrote previously; we are talking about
flatbed scanners scanning film on the glass directly, it does not mean
you always get Newton rings with those negs but there is no doubt they
are prone to get them, in the other hand film that received a right
exposure is not prone to get Newton rings scanning them on the glass.
BTW, if you scan any neg, underexposed or not underexposed without
direct contact with the glass (f.e. using the scanner film holder) it
would be very rare to get a Newton ring, in fact I never got one; the
point is that scanning severely underexposed negs on the glass
directly could allow to obtain a better scanned image but with the
Newton rings risk.

Carlos

2011/3/21 Bob Smith <notraces@xxxxxxxxx>:
> I read this from Sanders this morning and I wanted a little clarification - I 
> could be misinterpreting the thought. I've never heard of underexposed negs 
> causing Newton Rings. Am I understanding this correctly? I spent many years 
> selling both high-end drum scanners (Hell Graphics / Linotype / Scitex - 
> along with flatbed scanners from Iris / AGFA, etc) - and I never recall 
> hearing Newton rings can be caused by underexposed negatives. Now I'm curious 
> and just looking for some clarification.
>
> Thanks.
>
> Bob Smith
>
> "I am curious to hear more about your experience in scanning
> underexposed film directly on the glass.  My experience is that it
> is a nightmare, because of the Newton rings caused by the bare
> substrate on the glass (a problem I rarely encounter with a lot
> of developed emulsion in a well-exposed negative).  How do
> you avoid this problem with underexposed negatives on the glass?"---
> Rollei List
>
> - Post to rollei_list@xxxxxxxxxxxxx
>
> - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe'
> in the subject field OR by logging into www.freelists.org
>
> - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with
> 'unsubscribe' in the subject field OR by logging into www.freelists.org
>
> - Online, searchable archives are available at
> //www.freelists.org/archives/rollei_list
>
>
---
Rollei List

- Post to rollei_list@xxxxxxxxxxxxx

- Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe'
in the subject field OR by logging into www.freelists.org

- Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with
'unsubscribe' in the subject field OR by logging into www.freelists.org

- Online, searchable archives are available at
//www.freelists.org/archives/rollei_list

Other related posts:

  1. Home
  2. rollei_list
  3. Archive
  4. 03-2011