Resolution and pixel problem(Help)

M
Posted By
m004202002
Oct 27, 2003
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1597
Replies
6
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Closed
I am familiar with adobe photoshop 6.0 .I need to
implement this Rules(dv2005)(below) to the photos .
#################
(For digital camera)
It must have a resolution of 320 pixels wide
by 240 pixels high, and a color depth of either
24-bit color, 8-bit color, or 8-bit grayscale.
Only the 320×240 resolution will be accepted.
(For scanner )
If a photographic print is scanned, the print
must be exactly 2 inches by 2 inches (50mm x 50mm) square. It must be scanned at a resolution of 150 dots per
inch (dpi) and with a color depth of either 24-bit color, 8-bit color, or 8-bit grayscale.
###################
I have some photo in my hard drive . In photoshop I go to Image->… ->pixel dimensions and change wide 320 and Height 240 .But if I increase resolution I get bigger and When I decrease I get smaller picture . I cannot determine the correct resolution from those two rule . Can I implement those rules in existing photos ?
Please help me …How I can implement that rule in my photos ?

Take care

Email :(dot)com
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xalinai_Two
Oct 27, 2003
On 27 Oct 2003 05:53:13 -0800, (why) wrote:

I am familiar with adobe photoshop 6.0 .I need to
implement this Rules(dv2005)(below) to the photos .
#################
(For digital camera)
It must have a resolution of 320 pixels wide
by 240 pixels high, and a color depth of either
24-bit color, 8-bit color, or 8-bit grayscale.
Only the 320×240 resolution will be accepted.
(For scanner )
If a photographic print is scanned, the print
must be exactly 2 inches by 2 inches (50mm x 50mm) square. It must be scanned at a resolution of 150 dots per
inch (dpi) and with a color depth of either 24-bit color, 8-bit color, or 8-bit grayscale.
###################
I have some photo in my hard drive . In photoshop I go to Image->… ->pixel dimensions and change wide 320 and Height 240 .But if I increase resolution I get bigger and When I decrease I get smaller picture . I cannot determine the correct resolution from those two rule . Can I implement those rules in existing photos ?
Please help me …How I can implement that rule in my photos ?

You fell in the "different meaning of resolution" trap.

The requirement refers to resolution as "total number of pixels". There is only one rule in your quote,, and it says (in other words): Make the image 320 pixels wide and 240 pixels high and don’t care for printing resolution.

The second meaning of resolution as "pixels per measurement unit" is not relevant in your context – but what you noticed when changing this "resolution" is correct: Higher number of pixels per measurement unit results in smaller image if the number of pixels is constant (Resolution=pixels/units):

Michael

Take care

Email :(dot)com
T
tacitr
Oct 27, 2003
Please help me …How I can implement that rule in my photos ?

Make the image 320 pixels by 240 pixels. That’s it. That’s all you have to do.

—
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PS
paul.sparrow
Nov 5, 2003
Directly from http://www.dvlottery.state.gov/photo.php. What’s the 300 x 300 mean. We validated then submitted a 300 x 300 size photo and it worked (we hope).

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Photo Check

Photograph Instructions

Please select the image file you would like to verify. This image must be in the Joint Photographic Experts Group (JPEG) File Interchange Format (JFIF) format. If the image is created by using a digital camera, it must have a resolution of 320 by 240 pixels, with either 24-bits of color, 8-bits of color or 8-bits of gray. If the image is created by scanning a photographic print the original print must have been 2" by 2" (50mm x 50mm), and the scan must be performed at a resolution of 150 dots per inch (dpi); the image must have a resolution of 300 by 300 pixels, with either 24-bits of color, 8-bits of color or 8-bits of gray. The image can not exceed 62,500 bytes (62.5KB) in size.

Photograph File Name: |—————————————-| |—————————————-|
T
tacitr
Nov 6, 2003
http://www.dvlottery.state.gov/photo.php. What’s the 300 x 300 mean.

It means the image must be 300 pixels wide and 300 pixels high.

—
Rude T-shirts for a rude age: http://www.villaintees.com Art, literature, shareware, polyamory, kink, and more:
http://www.xeromag.com/franklin.html
PS
paul.sparrow
Nov 6, 2003
What’s the 300 x 240 mean?
T
tacitr
Nov 6, 2003
What’s the 300 x 240 mean?

300 pisels wide by 240 pixels high.

—
Rude T-shirts for a rude age: http://www.villaintees.com Art, literature, shareware, polyamory, kink, and more:
http://www.xeromag.com/franklin.html

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