Resizing after scan

[FRenich]

I have just recently purchased a RB 67 Pro SD and have done some test scanning on a Epson V750 Pro. I scanned the image at 4,000 dpi which may be too high--not sure--using the Silverfast software that came with the scanner. My scanned image size is 29 X 36 at 300 dpi. What is the best way in PhotoShop to scale this down to a 16 X 20 without blocking everything up or losing a lot of detail?

Fred

 

[pellicle]

Image -> Image size

check resample image and choose bicubic
check Constrain Proportions

type in the new numbers

job done

 

[Maretzo]

Max. for Epson 750 is 2400 dpi. Beyond that you wouldn't notice any change, even tiny. Make the file smaller and easier to handle.
Serge

 

[FRenich]

Thanks for the input. I knew that PhotoShop would down size I just didn't know if it took several steps or something different to keep detail, etc. Also, I was not aware that the limitation of the Epson 750 was 2400 dpi.

Thanks for your help.

 

[pellicle]

Also, I was not aware that the limitation of the Epson 750 was 2400 dpi.

well that's a limitation of what you'll get. Sanking (I think it was) made a post here with test targets demonstrating that you can scan to higher dpi settings but you just don't get more detail.

Personally I scan at higher dpi and downsample to something (when scanning 35mm) but often only need 1200dpi when making prints from my 4x5 negs.

Its also worth scanning at a "native" resolution of the scanner. This may be a number like 2400 or 3200 ... it will just depend. The reason is that you are not then down sampling in the driver but are getting one pixel (more or less) per light sensitive CCD element (simlification) . Read the specs and you'll be able to determine what the best options are.

 

[FRenich]

Pellicle, in reading another post there was a notation that you had dne some great articles on getting the most out of your scanner and he even shows you how to do it using the Epson scanner software. Where can I find these?
Thanks.