colorgate raster. need a rip to use enlarging raster files

[David Rogers]

quote shoparartiz:

……..can you give me tips to enlarge whitout loosing quality in printing within photoshop or colorgate 4 raster
thanks

The physics don’t allow this – you can’t get something for nothing. BUT, the next best thing is throwing the image through Photoshop an increasing the image size (NOT the canvas size) this will intelligently generate extra pixels based on the nearest neighbours. The result is a less blocky image, but with a very slight de-focused look to it.

There is a box to tick & a drop down to choose the options.

Dave

[shoparartiz]

thanks, i understand, but i have enlarged an image to 4 times bigger with BestColorXXL and it does not almost loose anything. and as you said, enlarging the image size (not the canvas) lets say 40 x 40 cm 300 dpi image which i need to print 120 cm by 120 cm, so should i work in still 40cm by 40 cm but 1200 dpi? or should i go 120cm by 120 cm 72 dpi?

quote David Rogers:

There is a box to tick & a drop down to choose the options.

Dave

and where is this tick & drop?
thanks

[David Rogers]

Say you have your 40x40cm 300dpi image but need a 120x120cm image. You could just scale it up but the resolution will drop to 100dpi. To maintain this resolution the IMAGE SIZE at the same resolution needs to be ‘manufactured’.

In Photoshop:

IMAGE
>IMAGE SIZE

manually type in the desired Document size and resolution. eg. 40cm x 40cm 200dpi and change to 120 x 120 x 600dpi

Visually – from a couple of feet nobody can tell the difference between a 600dpi print & a 2400dpi image – save your time as it’s not worth the wait.

Ensure all three boxes (options) are ticked.
Scale / Proportions / Resample

The drop down is on the last one – ‘Resample’ – choose bicubic as standard, but various options for marginally different results.

Keep an eye on the overall image size – as it’s easy to end up with one a couple of Gigabytes bigger than you can handle!!

Dave

[George Zerbino]

I use photozoom pro, excellent results (better than bicupic interpolation in photoshop), good price.

Link direct to page is http://www.benvista.com/main/content/content.php?page=ourproducts&section=photozoompro_1

There’s a demo to download so you can try it.

Regards,

GeoZ