High res - quick and probably silly question!!

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susie

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Would a jpeg from a 40D shot in Large fine which (according to the manual) is for printing A3 or larger, be considered high res?

Its only for a little club magazine, but I was the only person they could track who got any pictures at all of a couple of the winners. That will teach them not to book a pro :lol:
 
I believe anything above 300dpi is classed as High Res.
 
Thanks a lot, it sounds close enough and they are not looking at A3 size, they are only going to be about 4" accross so I will keep fingers crossed and send them!!

Now I can get off to play pictures on the pennines for the weekend :)
 
I don't imagine it will be a problem. I recently printed a 24 x16" print from a Jpeg to a perfectly acceptable quality at 254dpi. For a magazine it certainly won't cause problems.
 
DPI isn't to do with resolution though. Its dots per inch. You can have a 20x20px 300dpi image. If large is the largest size a 40D outputs to then it'll do A3 easily.
 
dolomitefan said:
I don't imagine it will be a problem. I recently printed a 24 x16" print from a Jpeg to a perfectly acceptable quality at 254dpi. For a magazine it certainly won't cause problems.
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Its only for a little club one, so image quality should be fine if you managed that size.
petemc said:
DPI isn't to do with resolution though. Its dots per inch. You can have a 20x20px 300dpi image. If large is the largest size a 40D outputs to then it'll do A3 easily.
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That confirms what I thought, large is the bigest I can get on jpeg, although it does go bigger on raw (I think) I have only just changed to raw though!
andrewc said:
Yes, that would be fine.

20px x 20px @ 300dpi would only be 0.17cm square.

A 3888x2592 40D image @ 300dpi would be 32.92cm x 21.95cm
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Oh good :D they have gone now so I can relax a bit!
 
I think Albys got it about right. 300dpi is the minimum I would consider to be hi res. The problem is you need to add the size of the final print, be it photographic or litho . an 24Mb file will produce an A4 print @300 dpi. but go to a double page spread and you'll nearly 50Mb.

Find out what size they will be using it and I would suspect anything up to A4 and you'll be fine. Don't forget that it's the file size , uncompressed , you're looking at not the jpeg compressed value.
 
Have you ever tried printing the same image at different dpi?

Until recently, I'd always go for 300 dpi even where it meant interpolating the image to make it bigger (my D2Xs isn't quite A3 at 300 dpi), but then I printed a 240 dpi image without realising and... you guessed it... unless you compare them very closely indeed you (well I) can't tell a difference

So a 40D at 240 will easily be good enough for an A3 print

DD
 
People are still getting confused. Its not that complex. "Hi-res" is high resolution, not high dpi or it would be called high dpi :p You can have a 10,000x10,000 high res image at 72dpi or 300dpi and the resolution is still going to be the same. In the modern age "hi-res" basically means as big as it'll go to be safe.

http://en.wikipedia.org/wiki/Dots_per_inch
 
I thought we were talking High resolution printing not High screen resolution here as screen wise is refered to as ppi and printing dpi sorry if I got it wrong ;)
 
Alby

I think you've highlighted the problem. The spec is to vague. It's a bit like I'll see you Tuesday. When on Tuesday , morning ,afternoon 10 am ,10 pm.

My reply to people who ask for " Hi Res" images is . OK what are you using the image for, and what size will you use it.. From that I can usually give them a file just a bit bigger than they need. If they insist, then OK they're the client, they get the full size file.
 
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