Camera Question

heylinder · 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:

BTW, my 5 mega pixel shoots in 180 ppi.

Thanks for any suggestions Smile

BeerCheeze · 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 5â€x7â€ image

(5â€ x 300 ppi) x (7â€ x 300 ppi) = 1,500 x 2,100 = 3,150,000, or about 3.2 megapixels

T-shirt · 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 Rolling Eyes

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 Rolling Eyes

)
This explains it better than I can
http://www.steves-digicams.com/techcorner/January_2005.html

BTW good luck on the trip to iceland Laughing

(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 Razz

)

heylinder · Posted: Sat, 17 Feb 2007 19:55:35 Post Subject:

heylinder · Posted: Sat, 17 Feb 2007 19:58:40 Post Subject:

T-shirt · Posted: Sun, 18 Feb 2007 05:36:14 Post Subject:

heylinder · Posted: Sun, 18 Feb 2007 11:24:45 Post Subject: