Posted: Sat, 17 Feb 2007 09:27:31 Post Subject: Camera Question
Anyone know of a point and shoot camera that shoots in 300 ppi? I realize that you can easily print anything in 300 ppi but this photo contest that I want to enter requires the photo itself be 300 ppi uncompressed.
I tried calling Canon (my camera is an A530) and Staples (company running contest) and got no helpful info. Actually Staples said I needed to get a "high end camera". I ask them how many amateur photographers they knew had high end cameras :rolleyes:
Joined: 14 Jun 2003 Posts: 8225 Location: In the naughty zone
Posted: Sat, 17 Feb 2007 11:41:32 Post Subject:
What size does the picture have to be?
(Width inches x 300 ppi) x (Length inches x 300 ppi) = Number of megapixels
Example: To shoot a high quality 5”x7” image
(5” x 300 ppi) x (7” x 300 ppi) = 1,500 x 2,100 = 3,150,000, or about 3.2 megapixels _________________ I do solemnly swear (or affirm) that I will faithfully execute the Office of President of the United States, and will to the best of my Ability, preserve, protect and defend the Constitution of the United States. - Oath of office of the President of the United States
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Joined: 22 Aug 2003 Posts: 795 Location: Snohomish, WA USA
Posted: Sat, 17 Feb 2007 16:19:37 Post Subject:
If this is your contest (long post, solution at the bottom)
http://hometownviews.dja.com/HomePage.html
I'd say the person who wrote the rules has spent far too much time with the easybutton
according to their FAQ you will need at least a 10.8 megapixel camera to get 300PPI at 12"x18" (the only print size I see mentioned in the entry form which is for the poster reward given to all entrants)
However, as EC correctly points out, Print PPI is determined by megapixels of the image divide by the print size in inches.
so any 'jpg submited final ppi resolution will vary according to the print size.
I'm sure what the really want are images that are reproducable for their promotioal purposes, posters, flyers and ads and 300 dpi is standard for those processes.
they trying to avoid submissions of celphone and webcam "quality" photos. But theoretically a 300x300 pixel photo would meet the letter of the rules if printed at 1"x1"
The reason Canon cameras optimize and mark their images as 180 or 240 PPI is........because canon photo printers are made to produce 240 PPI pictures.
To make your pictures read as 300 ppi you will need to resample them via photo editing software (with possible loss of actual picture quality )
This explains it better than I can
http://www.steves-digicams.com/techcorner/January_2005.html
BTW good luck on the trip to iceland (I was only there for a few hours in december one year, at the airport in a blizzard, when the plane broke down, outside looked like an un-defrosted freezer without the food )
If this is your contest (long post, solution at the bottom)
http://hometownviews.dja.com/HomePage.html
I'd say the person who wrote the rules has spent far too much time with the easybutton
Yes and I agree!
T-shirt wrote:
To make your pictures read as 300 ppi you will need to resample them via photo editing software (with possible loss of actual picture quality )
This explains it better than I can
http://www.steves-digicams.com/techcorner/January_2005.html
I've already tried that with Adobe Photoshop. Staples site kicks it back out because they say it's compressed
I don't really care about the trip ... I just want the fame
Joined: 22 Aug 2003 Posts: 795 Location: Snohomish, WA USA
Posted: Sun, 18 Feb 2007 05:36:14 Post Subject:
heylinder wrote:
T-shirt wrote:
To make your pictures read as 300 ppi you will need to resample them via photo editing software (with possible loss of actual picture quality )
This explains it better than I can
http://www.steves-digicams.com/techcorner/January_2005.html
I've already tried that with Adobe Photoshop. Staples site kicks it back out because they say it's compressed
I don't really care about the trip ... I just want the fame
That might be the way adobe saves it, but resampling is not compression. You should find a setting in Photoshop for save as "uncompressed jpeg" in
settings
The contest rules seem aimed at the very high end consumer/semi-pro photographer, yet staples doesn't come to my mind as a real camera shop. I know their trying to promote their new big poster printers, but the message is confused.
Hey, we know you here, that should be fame enough for anybody.
Hey, we know you here, that should be fame enough for anybody.
Oh Lord ... I'm in trouble
Anyways, someone else suggested I do this ... After taking your pic's in large super fine, open the pic in PS, resize the image by changing the long side to 5500, resample with the resolution set to 302? "just for good measure" so it is at least 300ppi?
It worked! I'm in
Thanks for all your help. I will look for that "save as uncompressed jpeg" thou
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(I was only there for a few hours in december one year, at the airport in a blizzard, when the plane broke down, outside looked like an un-defrosted freezer without the food 
)
