*****
To join, leave or search the confocal microscopy listserv, go to:
http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
*****

Your image is square, so you probably should keep it square.  8.5 inches at 300 dpi adds up to 2550 pixels. Open your image, go to image > adjust > size and enter 2550 x 2550 (keep aspect ratio, use bilinear or bicubic interpolation). If you want to print it at 8.5 x 11, you will need to crop it to the same aspect ratio, and then upsample it as described above. 

A better idea though would be to print your image at a final size of 6.8 x 6.8 inches. This is still 300 dpi, but you are not doing any upsampling (and therefore changing your data) 

Julio Vazquez
Fred Hutchinson Cancer Research Center
Seattle, USA


http://www.fhcrc.org

==


On Mar 5, 2013, at 12:49 PM, Mike Tighe wrote:

> *****
> To join, leave or search the confocal microscopy listserv, go to:
> http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
> *****
> 
> A journal has asked me to re-size an Image to 8.5" X 11".  Can I do this in ImageJ/Fiji ? The original image is 2048 X 2048 and 16MB and they need at least 300 DPI.
> 
> 
> 
> Thanks for any help!
> 
> Mike