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Old Dec 30, 2007, 10:41 AM   #1
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For several years Iíve been shooting film slides of sculpture and flat art for artists to submit to competitions. Nowadays, Iím called on to shoot digital images for this purpose. The competitions always specify something about the size/quality of the images they receive. If they simply ask for an image of say 1800 x 1600 pixels, I get it by shooting at 3 or 5 megapixels and cutting the image down with the export function of my software. So far images achieved this way havenít been rejected.

Today, Iím confronted with this in a request for entries:

ďUpload JPG files with 300 pixels per inch resolution AND a width and/or height maximum of 1800 pixels/6 inches. Only those digital images conforming to these specifications will be accepted.Ē

Iíve no idea what this means, especially the part about ď1800 pixels/6 inches.Ē Six inches of what? The art to be shot is 30 inches tall by 21 inches wide. Thirty inches is five 6-inch units. Five times 1800 pixels is 9000 pixels. I canít even achieve that dimension with my 5-megapixel camera. Anyway, Iíd think an image that size would take long time to download and would fill the room when viewed. So Iíd say that the 6 inches refers to the size of a screen display or print. Is there some baseline or standard involved here that I can refer to when faced with such requests?

I'll call the competition office if necessary, but I find that the people on the telephone often know nothing about the technical specs included in requests for entries.
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Old Dec 30, 2007, 10:56 AM   #2
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The "300 pixels per inch" has nothing to do with the size of the actual piece of art; it is a specification for printing the image you send them.

"1800 pixels/6 inches" means 1800 pixels per 6 inches, or 1800/6, or 300 pixels per inch. The person that wrote this specification didn't really know what he or she was talking about, so he or she said the exact same thing in two different ways: "300 pixels per inch" and "1800 pixels/6 inches".

What is different from what you've done in the past, is that here the maximum width and/or height is 1800 pixels, so you can submit an image that is as large as 1800x1800 pixels, andstill conform to the specification. The "300 pixels per inch" is irrelevant.
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Old Dec 30, 2007, 1:30 PM   #3
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TCav: Thanks for your prompt reply to my questions. I will proceed accordingly.

Slides have been a major vehicle called for in entering art shows and in marketing art for many years. At this point, using digital images is novel enough that no standardized specification format has taken effect, at least in my area. Besides the spec I quoted in my earlier message, I got this one last week, asking for:

" . . JPEG images with a resolution no lower than 500 K and no larger
than 2 MB."

I assumed a file size between 500 kB and 2 mB was wanted, so I sent in something of about 1.5 mB, and the art was accepted into the competition. So far, the only feature common to all requests is that images be JPEG.

Happy New Year!
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