24x36 print out of 40D

[equetefue]

How do I print a 24x36 print out of a 40D?

got an order thru exposure manager for a print in this size

do I crop the original to a 12x18 ratio at 300 dpi?

[Keith]

your going to need software to upsize your resolution. in nikon capture, they have good software built into the nikon software to upsize, for canon , you may want to try genuinel fractals or software as such to get to your output size. I have personally used GF and very pleased with it

[EV Wonder]

I have no experience at "uprezzing" images, but it wasn't that long ago that I questioned the practice from others who had experience in this regard.

Several individuals stated that Photoshop was just as good as Genuine Fractals at increasing print size, with no discernible difference being noted. However, the caveat was that the increase not exceed 50% of the original file size. They also said that bicubic smoother was to be used, i.e. Image>Image Size>Resample Image: Bicubic Smoother.

Hope this is of some help, and be sure to let us know what results you were able to achieve.

[Rudi]

Do Exposure Manager require a file at certain res? If not, I'd be inclined just to send them the original res, tweaked file, since they will know what to do with it. If the printer requires a certain DPI, then changing it in Photoshop is as good as Genuine Fractals up to a certain point, as Blayne mentioned above.

You should not need to crop the file at all if there was no cropping performed originally - 24x36 is the same ratio as the 40D output (2x3 or 4x6 is the native ratio of the Canon DSLRs).

[equetefue]

When I did my 24x36 thru EM I sent a fixed JPEG in 300 dpi and it turned out awesome.

No cropping needed. 24x36 = native resolution

[wankston]

No amount of rez-ing up is going to change the fact that you are working with an image that is approx. 8 x 12 @ 300 dpi. I have worked in the prepress graphics business for a number of years and have seen many images rez'd up with numerous softwares. I liken most of these attempts to people who use digital zooms on their cameras. Its a poor way to get the desired results. Bare in mind that you are producing an image I suspect, that will be viewed at an increased distance and will therefore view favourably at a decreased dpi. The standard for offset printing is 300 dpi @ 100%. How is it being printed? If it is produced on an inkjet you can probably increase your size 3x to produce a pretty decent image at 100 dpi. If you really require 300 dpi at 24 x 36 you better be shooting the image in tiles and stitching it together in photoshop. It all depends on how it will be viewed in the end.