Sponsor Message:
Aviation Photography Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Should I Resize The Photo?  
User currently offlineH. Simpson From United States of America, joined Mar 2001, 949 posts, RR: 3
Posted (12 years 8 months 1 week 3 days 9 hours ago) and read 1348 times:

Hello world,

my scanner is a HP 3200C, I scan the photo with 800dpi and the file is about a 20-something mb. I use Canon Photo Gold editor to sharpen the photo and resize to 1024*680.
The question is will the picture become sharper after I compress the photo(because I "squeeze" 800dpi)?

I still getting blurry image after I scan with 800dpi, work on it using sharpen ,brightness and compress into 1024*680 size. Why? Confused

Thannnnnnks!
Mike Smile/happy/getting dizzy

4 replies: All unread, jump to last
 
User currently offlineScreener4 From , joined Dec 1969, posts, RR:
Reply 1, posted (12 years 8 months 1 week 3 days 8 hours ago) and read 1287 times:

What is the "native" DPI of your scanner without inerpolation? I can scan at 3200 DPI if I want, but there's no point, because the scanner just invents the in-between pixels (its native resolution is 600dpi, which is typical, although there are some 1200dpi flatbed scanners now). Find out what the native res. of the scanner is and scan at that.

The picture will not be sharper just because it is smaller, but any problems (blurry, out of focus, etc.) will show up less because they aren't as big!

You will always need to apply some sharpening to the final 1024 x 680 sized image after you have resized it in order to ensure it's sharp. The trick is to apply enough to get the image sharp, without introducing "jaggies"

S4


User currently offlineH. Simpson From United States of America, joined Mar 2001, 949 posts, RR: 3
Reply 2, posted (12 years 8 months 1 week 2 days 15 hours ago) and read 1264 times:

I had no idea what's the native resolution is, i think it's 600dpi, but in the software, it said the best resolution is 150dpi.

But thanks anyway, S4


User currently offlineSonic99 From , joined Dec 1969, posts, RR:
Reply 3, posted (12 years 8 months 1 week 2 days 9 hours ago) and read 1258 times:


Native resolution = optical resolution (normally advertised as such). Most scanners can achieve even higher resolutions than the optical capability and this is referred to as "interpolating".

Scanning at higher than optical resolution is no solution at all since this will only cause dissolution....  Laugh out loud

i.e. if you have a 600dpi scanner, then scan your photos at that resolution and try to achieve the highest pixel output you can get. Then shrink the photo to a maximum of 1024 pixels (length). Never enlarge from the output otherwise the image will be filled with "garbage" pixels.

Hope this helps.

Stephan


User currently offlineH. Simpson From United States of America, joined Mar 2001, 949 posts, RR: 3
Reply 4, posted (12 years 8 months 1 week 1 day 14 hours ago) and read 1248 times:

Ok, thanks for advice Stephen.

Top Of Page
Forum Index

This topic is archived and can not be replied to any more.

Printer friendly format

Similar topics:More similar topics...
Should I Give The DC-8 A Chance? posted Sat Dec 16 2006 18:34:41 by Jajo
Amateurs, The Internet And The Photo Market posted Sun Nov 5 2006 07:13:09 by StealthZ
How Should I Edit This Photo? posted Sun Oct 29 2006 02:00:36 by NicolasRubio
What's Going On With The Photo Printing? posted Thu Jan 19 2006 19:21:29 by Mcdonobr
Could The Photo With Flare Be Accepted? posted Tue Aug 2 2005 21:33:36 by Bubbles
Artistic "goodbye" In The Photo ..? posted Thu May 5 2005 23:39:59 by Guido
Thumbnails On The Photo's Pages posted Thu Mar 31 2005 08:24:27 by CallMeCapt
Is The Photo Screening Process Flawed? posted Fri Feb 25 2005 10:48:50 by Billsville
Should I Sell This Photo? How Much? posted Fri Jul 30 2004 16:23:22 by Dlx737200
Centering Of The Plane In The Photo posted Mon Jun 21 2004 00:10:42 by 747SPA330MD11