Fw: High Resolution Scans
Fw: High Resolution Scans
- Subject: Fw: High Resolution Scans
- From: MARK SEGAL <email@hidden>
- Date: Wed, 16 Apr 2008 14:23:20 -0700 (PDT)
----- Forwarded Message ----
From: MARK SEGAL <email@hidden>
To: John Massman <email@hidden>
Sent: Wednesday, April 16, 2008 5:19:07 PM
Subject: Re: High Resolution Scans
John,
I think you'll agree this is pretty vague stuff. I have difficulty comprehending <"some average number of "somthing"> or guessing at spreads. The reference deals with the question of line pair tests quite practically, and I think the O/P is looking for practicality. Hence I believe the advice I've provided here remains relevant to his needs. But he should chime-in and tell us.
Mark
----- Original Message ----
From: John Massman <email@hidden>
To: Mark Segal <email@hidden>
Sent: Wednesday, April 16, 2008 4:56:54 PM
Subject: Re: High Resolution Scans
Mark:
I read the reference but still contend there is some average number of "something" equating to the resolving ability of film. Sure there are a ton of variables so no finite number exists but did engineers do all that line pair resolution testing for nothing years ago? As all the conditions improve the results on film will continue to get better and better until the lens is as good as we can make it, the film is the finest grain available, the parallax of the system fully corrected, bla bla bla. At some point, with specific film, there a range for the number that will not visually get any better. I don't know what it is but can guess at the spread only.
John
----- Original Message -----
From: Mark Segal
To: John Massman ; colorsync
Sent: Wednesday, April 16, 2008 4:44 PM
Subject: Re: High Resolution Scans
The principles are identical. He just needs to substitute the measurements of the input media and the output media, do the same arithmetic and he has his answer. There's no such thing as a unique "resolving power of 4*5 film under optimal conditions". Please see the reference I provided.
Cheers,
Mark
----- Original Message -----
From: John Massman
To: MARK SEGAL ; colorsync
Sent: Wednesday, April 16, 2008 4:40 PM
Subject: Re: High Resolution Scans
Everything you say is true but the original post wanted to know the max res
to scan 4x5 was to get the best possible result. In other words what is the
resolving power of 4x5 film under optimal conditions.
>I think there may be some lack of clarity here. There is input resolution
>(the number of pixels per inch created in the imaage file) and output
>resolution (the number of pixels per inch in the document outputted to the
>printer). And for sake of further clarity let us call this
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden