Upsizing (enlarging) image file

[JHDPREVIEW]

Greetings,

I'm interested in printing one of my photos by cropping the area of interest and enlarging the final print to 20x24 inches. I tried to locate the instructions on how to upsize but the search engine is down. My current method consists of using PhotoShop 7 as follows...

1. Select image and crop area of interest.
2. Click on IMAGE then IMAGE SIZE from the drop down menu.
3. Leave the resolution at 300 pixels/inch (for ideal print quality)
4. Check the resample image box using the BICUBIC method.

5. Increase the size by roughly 10% (i.e. change 6x9 to 6.7x10 with constraint on).
6. Repeat step 5 until I get to the final size I need.

Is that the right method for upsizing the most accurately with PS 7? I understand that PS-CS has an automated method. Please correct my workflow if I missed anything or am way off.

Thanx for any help provided.
-JH

 

[Kate Street]

Greetings,
I'm interested in printing one of my photos by cropping the area of
interest and enlarging the final print to 20x24 inches. I tried to
locate the instructions on how to upsize but the search engine is
down. My current method consists of using PhotoShop 7 as follows...

1. Select image and crop area of interest.
2. Click on IMAGE then IMAGE SIZE from the drop down menu.
3. Leave the resolution at 300 pixels/inch (for ideal print quality)
4. Check the resample image box using the BICUBIC method.

5. Make sure constrain proportions is checked.
6. Change the unit of measure from "inches" to "percentage".
7. Enter 110% in one of the boxes (the other should change automatically)
8. Repeat step 7 until you have the size you need.

Note: increasing a crop from an original image all the way to 20"x24" may be a bit of a stretch. Somewhere along the way, you might attempt to a little bit of sharpening to see how the image reacts, then continue upsizing.

Kate

 

[JHDPREVIEW]

Hi Kate,

Thank you for the reply. Glad to see I was in the ball park. Changing to percentage does make it easier. Many Thanks.

Greetings,
I'm interested in printing one of my photos by cropping the area of
interest and enlarging the final print to 20x24 inches. I tried to
locate the instructions on how to upsize but the search engine is
down. My current method consists of using PhotoShop 7 as follows...

1. Select image and crop area of interest.
2. Click on IMAGE then IMAGE SIZE from the drop down menu.
3. Leave the resolution at 300 pixels/inch (for ideal print quality)
4. Check the resample image box using the BICUBIC method.

5. Make sure constrain proportions is checked.
6. Change the unit of measure from "inches" to "percentage".
7. Enter 110% in one of the boxes (the other should change
automatically)
8. Repeat step 7 until you have the size you need.

Note: increasing a crop from an original image all the way to
20"x24" may be a bit of a stretch. Somewhere along the way, you
might attempt to a little bit of sharpening to see how the image
reacts, then continue upsizing.

Kate

 

[aruzinsky]

Stair Step Bicubic (#4) is compared to other methods here:
http://www.general-cathexis.com/interpolation.html
--
Author of SAR Image Processor and anomic sociopath
http://www.general-cathexis.com