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DPChallenge Forums >> Hardware and Software >> How to best enlarge a DPC-size file?
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10/17/2011 04:12:33 PM · #1
Hey all

A friend wants a 12x20 print of a DPC-size photo, by which I mean it's 300 mb and 800 pixels on the longest side, so it's 8.5x11in. Fine and dandy, I thought, and began rooting through the files looking for the original RAW file to work from...and can't find it anywhere :-(

But I did find the photo, at DPC dimensions, saved as a TIF. So I know for sure I can get a clean print of the image at 8.5x11, but not so sure if it can be blown up from a print to 12x20 and preserve its integrity.

Can it be done? If not, I do have have similar photos (did find those RAWs, thank gawd) taken during the same outing that are close enough, but not quite the same. Help!
10/17/2011 04:15:09 PM · #2
Perhaps print it on a textured paper, which may help hide the low-res?
10/17/2011 04:27:02 PM · #3
What's the dpi on that tiff?

You save a file at high dpi but low dimensions so it may print perfectly well.
10/17/2011 04:38:00 PM · #4
Originally posted by adigitalromance:

What's the dpi on that tiff?

You save a file at high dpi but low dimensions so it may print perfectly well.


Currently 72 dpi...it can't be raised to 300 dpi, can it?
10/17/2011 04:41:14 PM · #5
Originally posted by adigitalromance:

You save a file at high dpi but low dimensions so it may print perfectly well.

An 800 pixel image blown up to a 20" print is 40 DPI. The DPI value that it was nominally saved at at means nothing. It's merely an abstraction until a piece of paper comes into play. How far out you spread the actual pixels on that paper is what is the concern.

800 pixels / 20 inches = 40 DPI
10/17/2011 04:42:35 PM · #6
Don't worry about the DPI. You know you only have 800 pixels. I can save that file at 4200 DPI if I like, but it won't change the number of pixels.
10/17/2011 04:47:51 PM · #7
isn't photo quality considered around 200ppi? I don't think this print is going to look very good blown up. Bare minimum would be 100ppi. I don't think even genuine fractals could get you where you want to go, why can't you get the original file? Is this something you are stealing from the web?
10/17/2011 04:55:43 PM · #8
print it out actual size high quality best you can then photograph it again with your camera should result in a better image than just blowing the original up but still isnt going to be great

10/17/2011 04:56:23 PM · #9
Originally posted by Zeissman:

isn't photo quality considered around 200ppi? I don't think this print is going to look very good blown up. Bare minimum would be 100ppi. I don't think even genuine fractals could get you where you want to go, why can't you get the original file? Is this something you are stealing from the web?


No, I am not stealing it from the web; I don't do skanky shit like that. I have no problem posting the image. Here: ' . substr('//images.dpchallenge.com/images_portfolio/55000-59999/59029/120/Copyrighted_Image_Reuse_Prohibited_979262.jpg', strrpos('//images.dpchallenge.com/images_portfolio/55000-59999/59029/120/Copyrighted_Image_Reuse_Prohibited_979262.jpg', '/') + 1) . '

After some thought and looking at the remaining images I realize now why I probably didn't keep the RAWs...ironically because I didn't think the images derived from them would pass muster on Alamy, due to the amount of heat haze going on. So I TIFFed them all but didn't work on all of them in PS, so those 10 that I didn't muck around with are good to go. The ones I did are all trapped at DPC specs.

Message edited by author 2011-10-17 17:19:54.
10/17/2011 11:47:39 PM · #10
late evening bump for European/Aussie crowd
10/17/2011 11:57:16 PM · #11
If you just trashed the originals, and still have the same hard drive that they were on, recovery software may be able to find the files, esp if you still have the original filename with the 800 pix image. You may also be able to hunt it using the date to save search time. I don't know what kind of system PC or Mac you are using, but someone here at DPC will probably have a handy free download that can find them if they still exist in the netherlands of your 'puter trash.
10/18/2011 12:00:33 AM · #12
I am very curious as I have one that I'm in the same predicament with!
10/18/2011 12:09:19 AM · #13
[quote=MelonMusketeer] If you just trashed the originals, and still have the same hard drive that they were on, recovery software may be able to find the files, esp if you still have the original filename with the 800 pix image. You may also be able to hunt it using the date to save search time. I don't know what kind of system PC or Mac you are using, but someone here at DPC will probably have a handy free download that can find them if they still exist in the netherlands of your 'puter trash. [/quote}

Do still have the same hard drive, and the original filename. Using Snow Leopard on a Macmini.

Soo....any takers?
10/18/2011 12:26:03 AM · #14
Maybe try this one...
10/18/2011 06:53:10 AM · #15
//www.ononesoftware.com/products/suite/perfect-resize/?ind
10/18/2011 09:27:51 AM · #16
viagra?
10/18/2011 10:32:35 AM · #17
i've had to recover lost photos from my flash cards in the past. the programs i used were stellar pheonix or techtool pro. neither are free though.

whatever you choose, make sure you don't use booomerang, that program sucks and there is zero customer support.
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