Best Upsizing

[alan-G3]

Hi There

If I want to have a picture printed Full size, lets say a full-standing portrait, via a processing house,
should I:
Send it straight.
Use stiching software and make a "BIG FILE"
Use some kind of "upsizing" software.

Basically, I want a picture of a person printed "full person" size, at a reasonable viewing resolution.

HELP

regards
Alan

[chris.bailey]

Wooh, tricky one.

I would not try and stitch as I think you will have trouble making the joins invisible. You may get lucky but I think it will be very tricky to get everything to align properly.

I recently did some A0 prints from a 10D image upsized in the CS RAW converter and printed at about 100 dpi final res. I tried a re-sample to 300 dpi but to be honest the 100 dpi shots were better when viewed from a reasonable distance. Am going to try Genuine Fractals when I get a few hours.

[Conk]

Here is a guy that may do it. http://www.adimaging.com/
His name is Aric. He'll give you all the info you need.

[AJSJones]

I *would* recommend the stitching approach, but using a longish lens (such as a portrait lens) and a tripod. Ideally use a head for your tripod that lets you mount the camera so it can rotate about its "nodal point" to minimize parallax errors. You should worry more about exposure and white balance than how visible the stitch seams will be! Both Photoshop and the Canon PhotoStitch will let you stitch but there are produts out there that cost extra$ but give you more control...

IMPORTANT : To get all the shots to match exposure, color and tone etc., USE MANUAL settings for aperture and shutter speed and white balance, to ensure all shots get the same processing

With 5-6 stacked shots (from a landscape camera orientation) including about 10% overlap, you should be able to print about life-size at 150 pixels per inch WITHOUT ANY UPSIZING , unless your subject has outstretched arms :-)

Andy

[Derek Smith]

Alan,

A 16mB TIF from the 10D will easily print put up to 2m tall if you use a print house running a 600dpi or better poster printer.

We regularly output 10D images using our large format Novajet to 1m and 2m without any problems.

Word of warning - don't oversharpen, and check the image carefully for dust bunnies. Remember - everything is MUCH bigger when its blown up to 2m portrait.