Hi,
I am so confused as to how to resize an image. I read all the time to NEVER crop unless you absol. need too b/c you lose so much detail...
therefore can someone describe step by step how to resize an image but NOT lose detail/pixels....
How do I keep the dpi at 300 for a large print 8x10 or larger? Or does 300 dpi really matter?
How do I keep the print clarity if I have a 4x6 image and want to change it to a 11x14 image?
I am sooo new to PhotoImage that a step by step process of how you resize an image would be VERY helpful for me...
*** I keep the resample box UNchecked, correct?
-thanks so much
resize/resolution
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keenart
It is difficult to answer all of your questions without writing a tutorial.
As a general rule: keep your resolution between 160 to 200 DPI for medium quality printing. 96 dpi for on screen viewing 72 dpi if you are not fussy about quality.
Example: if you have a 4 x 6 at 360 dpi then you can double the size and reduce the resolution by half without lose of quality. Or, 8 x 12 at 180 DPI. Or, 16 x 24 at 72 dpi, yields low quality.
Use the highest resample quality available, or not, your choice. Do not use a compression ratio if you are to resize the image again later.
That should get you started.
As a general rule: keep your resolution between 160 to 200 DPI for medium quality printing. 96 dpi for on screen viewing 72 dpi if you are not fussy about quality.
Example: if you have a 4 x 6 at 360 dpi then you can double the size and reduce the resolution by half without lose of quality. Or, 8 x 12 at 180 DPI. Or, 16 x 24 at 72 dpi, yields low quality.
Use the highest resample quality available, or not, your choice. Do not use a compression ratio if you are to resize the image again later.
That should get you started.
Last edited by keenart on Sun Mar 12, 2006 12:24 am, edited 1 time in total.
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heinz-oz
It is impossible to give you an even basic understanding of the mechanics involved here.
There is a good tutorial at http://www.andvideo.co.uk/underes.html that should get you started.
There is a good tutorial at http://www.andvideo.co.uk/underes.html that should get you started.