Print image sizing

Just wondered, when you guys print an image, do you resize it in PP before printing, ie, resize to 297mm height for A4 etc. (assuming you want it as big as poss on A4)

or do you leave the image size as the original taken size, and let the printer software size it, or

size each print accordingly, ie, if you want an A4 save a file image size A4, and say 10x15 a file for that size?

Thanks

If you want to sharpen accurately for each output size, then yes, you should manually resize each time.

This is the way I work (in Photoshop):
1. Enhance the photo at its largest size. Save it (in a non-destructive format eg TIFF) but don't sharpen.
2. Duplicate the photo and resize it for output (and reduce to 8bit if applicable).
3. Apply sharpening suitable for the output (mostly with Unsharp Mask)
4. Print
5. Close without saving (No need to keep the duplicated file, because I've still got my big and beautiful original)

Once I've saved the image, I open it and edit it (I use the crop tool set to the print size I want to print at) and then sharpen (if required) before printing.

thanks for reply, I use PS so is it best to save in PS format, or tiff?

MaDProFF wrote in post #3406751
thanks for reply, I use PS so is it best to save in PS format, or tiff?

Either or. Both are lossless format. To be honest I usually save as a jpg (max quality). At high res, if you can spot the difference you have better eyes than me.

EOS_JD wrote in post #3406780
Either or. Both are lossless format. To be honest I usually save as a jpg (max quality). At high res, if you can spot the difference you have better eyes than me.

I agree, to a point. Whether you can see it or not, the degradation is there, and it gets worse with each save. If you plan to re-edit your image frequently, I'd avoid jpeg.

Also, I believe that "maximum quality" from a camera is not always the same as "maximum quality" in Photoshop. I read somewhere that Canon's maximum might be around Level 10 (of 12) in Photoshop. Can anybody confirm this?

Damo77 wrote in post #3406812
I agree, to a point. Whether you can see it or not, the degradation is there, and it gets worse with each save. If you plan to re-edit your image frequently, I'd avoid jpeg.

Also, I believe that "maximum quality" from a camera is not always the same as "maximum quality" in Photoshop. I read somewhere that Canon's maximum might be around Level 10 (of 12) in Photoshop. Can anybody confirm this?

I shoot RAW