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View Full Version : pic size testing


bangster
08-03-2008, 01:44 PM
Test

Conclusion: For on-screen display, little is gained by resolutions greater than 72dpi.
bangster
08-03-2008, 01:47 PM
Test 2
bangster
08-03-2008, 01:52 PM
test 3
Tom McIntyre
08-03-2008, 03:37 PM
When displaying on a video monitor the only way to increase resolution is to use a larger picture.

If you take a 300 dpi picture of a 1" object and display all the pixels, it will be about 9 times as large or roughly 9". The actual size depends on the resolution of your display monitor. I think the pixels on the laptop I am using right now are 96 dpi. In that case your 72 dpi 1" object will be .75".
bangster
08-03-2008, 08:20 PM
I set the physical size of all of these (except the first small one) at 6" wide, and varied the resolution: 72, 120, 300. I can't see any difference in them. Something in this software evened them out?

bangster
kirxklox
08-03-2008, 08:45 PM
Some programs LIE to you.
terry hall
08-03-2008, 09:11 PM
if you save them offsite and use links they will show larger than the default size on this mb...

even saving to the gallery in the user area will suffice....

iirc, this mb resizes to a default...
Tom McIntyre
08-04-2008, 10:05 AM
Like Terry says the attachment function resizes the pictures. The first small one is 288 x 215 pixels. The rest are all 460 x 384 pixels. 460 pixels is the max width for an attahced image.

All screens have a fixed resolution (at any one time) therefore it is only the pixel dimensions that matter. Dots per inch, physical image size, and all the other parameters relate only to printed copies of the image. If they have any effect on the screen image, it is due to the fact that they store more pixels.
bangster
08-04-2008, 01:24 PM
Does all this confirm what I said? Or disconfirm it? Or what? I'm not sure where this is going.
kirxklox
08-04-2008, 02:01 PM
It mostly confirms it. With a Few exceptions.

You should t least use 100 DPI instead of 72 to allow for the Monitors that use better resolution.

Lets say you want to show a particular piece and some of us that really want to get a close look at it. So we download it and try to expand the view to really take a up close view. With a LOW RES image as soon as we try to Zoom In the image will ge fuzzy. With a Hi RES image it will not do that.

And then you have some progrrams that LIE to you.
bangster
08-04-2008, 02:52 PM
Gotcha. But I doubt that PhotoShop is one of the Liars.
kirxklox
08-04-2008, 03:01 PM
Nope, but Photo Editor is. It is still my favorite resizing tool.