Jpeg/tiff at final size for chromira?

[sabina_d.]

I'm located in Sweden and found a lab here that does Chromira prints. That is

going to be the first time I order one of these. It's not exactly what I wanted

(I would prefer an epson inkjet print for my b&W image) but it's what's

available. Problem is now that I am reading their instructions on how to prepare

the file I'm finding some of the requests a bit strange.

As far as I know, when printing inkjet, it is better to scan the neg at 300% for

a bigger size and then go bigger on printer driver, right? Is it different with

Chromiras? The lab requested that the file be at the size of the final print.

Also, they want a jpeg or tiff file. Aren't jpegs not that great for printing?

Should I go with tiff then?

I am using a scanned 4x5 negative for this, and the final print will be about

20x24.

[alan_olander1664878205]

If you want a 20 x 24 inch print, and they want 300 ppi for a Chromira print, you need a 6000 x 7200 pixel image. Your 4 x 5 image would need to be scanned at about 1500 ppi to achieve this. There is nothing wrong with printing from a jpeg.

 

"it is better to scan the neg at 300% for a bigger size and then go bigger on printer driver"

 

Not sure what you mean there, but usually scanning at the highest resolution of the scanner will give you the most flexibility with your image file. Not sure if this is necessary with 4 x 5.