[rollei_list] Re: Rollei neg scan practical comparison
- From: John Wild <JWild@xxxxxxxxxxxxxxxxxxxxxx>
- To: "rollei_list@xxxxxxxxxxxxx" <rollei_list@xxxxxxxxxxxxx>
- Date: Wed, 23 Mar 2011 14:53:47 +0000
Carlos, just a thought...
If Newton rings are more of an issue with underexposed negatives, could it
be that these negatives, having less silver are either less rigid or
alternatively the base, having no silver in larger areas, becomes prone to
sticking to the glass. If this is the case, the silver may act as a barrier
to the formation of Newton rings. Different film bases may behave
differently though...
I will have a look at some of my glass mounted transparencies to check how
they behave.
John
On 23/03/2011 11:14, "CarlosMFreaza" <cmfreaza@xxxxxxxxx> wrote:
>> 2011/3/22 Bob Smith <notraces@xxxxxxxxx>:
>> ..........
>>> I also find it interesting you get a better scan by laying the neg directly
>>> on the glass. ....<
>>> I may try to scan a few negs directly on the glass to see if it makes a
>>> difference. I've been shooting 4x5 sheets and don't like the Epson holder -
>>> so I may give those a go.
>
> I decided to do a direct scan comparison scanning the same old and
> severely underexposed negative using both methods: neg on the scanner
> glass directly and with the scanner film holder, I washed the neg
> again previously, results were a surprise to me this time (I had
> scanned this neg several times). From other point of view, the image
> obtained from the scanner glass directly got three Newton rings, it
> only confirms that underexposed negs are prone to get them (please
> read the complete explanation in my blog):
> http://itarphotos.blogspot.com/2011/03/scans-comparison.html
>
> Carlos
>
> PS: My statement quoted by Bob above was referred to underexposed
> negs, however see the scans comparison.
> ---
> 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:
