Help with Large Prints (40x60)

I have someone who is interested in a 40x60 print. The photo was taken with the 5D Mark II and comes in at 12.48x18.5 @300 dpi. I've printed images up to 27x40 with simliar file sizes and they have come out great but I've never done anything larger.

Would a file like this hold up at 40x60. It will be printed on canvas and viewed at 5'.

Also I've always resized my photos in photoshop by cropping them to the appropriate size and then adjusting the dpi in the Image Size dialoge box set at bicubic. Is there anything different I should be doing when enlarging this much?

Thanks, Aaron

Aaron,

We just did a 40x60 print from a mkII file and it looked great. I chose to print this one at 240 ppi to keep the file size manageable and it looked great. When enlarging that much I typically like to interpolate in stages, not going to the full size in one big step. Biggest problem with a print this size is not dreading the paper when handling it. Works best with 2 people.

Les thanks for the information. I use BayPhoto as my printer so the file has to be 300dpi is that going to cause a problem. Also how do you interpolate in stages?

Photozoom pro 3 is what I use and is the best program for up sizing that I have found so far. I haven't tested anything new on the market in the last couple of years however, so maybe there is something better out there now--but I doubt it. I think it was Tim Grey who at first recommended upsizing in stages, but now says there are much better ways. Apparently that was a favored, but dated, technique.

Photozoom pro 4 is out now--here you can download a free trial-- http://www.benvista.com/downloa

I would suggest you try a few different methods on your picture and determine yourself which one holds the best detail after upsizing. You can save the photozoom image but it will be watermarked.

Paul

Perfect resize 7 is fantastic I use it all the time the quality is stunning.

Aaron,

I have never used the programs mentioned above. I just do it in photoshop and upsize about 25% in each jump until I get to the size I want. Works better for me than all in one shot. Trying the programs above could work better, I just always tend to go the cheap route.