From: Sandy King (sanking@clemson.edu)
Date: 12/01/02-02:00:38 PM Z
Ken wrote:
>
>Perhaps there is information about how the software handles different
>resolutions in the manual. A way to see for yourself is do a scan at
>2400DPI resolution and another at 300. If the 300 DPI scan is faster (
>takes less time )there is a good chance that there is a lot of info being
>dumped. Try to determine if Epson specifically states they have an
>additional set of color stripes / sensors for doing lower image resolutions,
>which I strongly suspect is not the case. If they do have additional sets
>of sensors then the above speed test is invalid.
Nothing in the manual about any of this but I did the test you
suggested and the scan was much faster at 300 dpi, after adjusting
for re-sizing, than at 2400dpp at 100% ratio. So this would suggest
that I would be better for scanning at 2400dpi and re-sizing later,
right?
Sandy King
>
>
>----- Original Message -----
>From: "Sandy King" <sanking@clemson.edu>
>To: <alt-photo-process-l@skyway.usask.ca>
>Sent: Sunday, December 01, 2002 10:57 AM
>Subject: Warning: Digital Question
>
>
>> I have a scanning resolution question.
>>
>> Situation is this. I am scanning a 4 X 6.5" section of a 5X7" color
>> negative with the Epson 2450 flatbed scanner, which has optical
>> resolution of 2400 dpi, using SilverFast scanning software as a
>> plug-in to PhotoShop. The eventual purpose of the scans is to make
>> color prints approximately 13X19" in size, or to make negatives for
>> alternative printing. I understand that a maximum resolution of a
>> little over 300 dpi at the printing size is needed for either purpose.
>>
>> My question is this. What are the pros and cons of of the two
>> following scenarios: 1) scanning at 100% of the 4 X 6.5" negative
>> size at the maximum optical resolution of 2450 dpi, re-sizing later
>> in PhotoShop, or 2) scanning at the desired printing size of 13X19"
>> 300dpi?
>>
>> Sandy King
>>
>>
>>
>>
>>
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