Re: [Digital BW] Scan resolution for printing 4x5 negs?
2004-09-15 by Linda B
Hello, I have not gotten any email from this group for over twenty four hours. would someone in the group send a group message to me so I can see what the problem is. thanks linda b
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----- Original Message -----
From: Louis Dina<mailto:lbdina@...>
To: DigitalBlackandWhiteThePrint@yahoogroups.com<mailto:DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Saturday, March 12, 2005 9:49 AM
Subject: Re: [Digital BW] Scan resolution for printing 4x5 negs?
In my job, I regularly create graphics posters for trade shows, some
as large as 4X6 feet. I have found that I can go as low as 100 to
125 ppi and still get excellent results. They look perfect from
normal viewing distances (typically 4 feet away or more), but if you
inspect them up close, you can see the fuzziness and lack of
resolution. Size and normal viewing distance are the key. Most of
these are output to large format inkjet or a lightjet from RGB
files.
Lou
--- In DigitalBlackandWhiteThePrint@yahoogroups.com, <aderca@s...>
wrote:
> Yes, Bob, I'm familiar with the physics behind this,
> most people with normal vision can "resolve" 600 dpi
> at 5" distance, most people with normal vision cannot
> distinguish above 300 dpi at 10" distance.
> Given how we normally look at photos, I think that
> is why most experts recommend 300 dpi as a good
> file resolution. For poster size photos you can probably
> go safely below 200 dpi, as most people would not
> normally look at them with a loupe.
>
> Regards
>
> Andrei
> ----- Original Message -----
> From: Bob Frost
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Sent: Saturday, March 12, 2005 4:48 AM
> Subject: Re: [Digital BW] Scan resolution for printing 4x5 negs?
>
>
> Andrei,
>
> Actually it has been proven that some people with good eyesight
can see
> improvements in prints up to 600 ppi:-
>
> http://www.clarkvision.com/imagedetail/printer-ppi/index.html<http://www.clarkvision.com/imagedetail/printer-ppi/index.html>
>
> and
>
> http://www.clarkvision.com/imagedetail/eye-resolution.html<http://www.clarkvision.com/imagedetail/eye-resolution.html>
>
> Bob Frost.
>
>
>
> ----- Original Message -----
> From: <aderca@s...>
>
> 250 to 300 dpi is pretty much considered a standard for
> good resolution files that you send to the printer (so after
> you scan at 1600 dpi, you can enlarge sufficiently to get
> down to 250-300). I doubt very much that you can see
> a difference between a 300 dpi file and a 600 dpi sent
> to the printer, regardless of the caliber of the output machine.
>
>
>
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Please visit the Group Homepage to check the Files, and other resources as they are often being updated.
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If you wish to receive no emails or just a daily digest, or you wish to unsubscribe, please edit your Membership preferences by visiting this same page.
Please follow these basic guidelines:
- As threads develop, trim off excess portions of earlier messages to keep them short.
- Good manners are required at all time. No personal attacks or flames. Hostile, aggressive or argumentative users may be removed from the membership without notice.
- Keep your posts and threads related to the group topic of digital B&W printing. Users who persistently make off-topic posts may be removed from the membership.
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