Reducing JPGs

SteveM · 02-07-2009, 11:28 PM

I want to show pics to compare various lenses and I seem to be able to reduce a 5gb JPG via CM3 down to 870k at 72 pix per inch. I can't drop the size to 600k that this site needs without clobering quaility via a different program. Any ideas?

Ole · 02-07-2009, 11:37 PM

Reduce the pixel count to 2000 x 3000, 1200 x 1800, or whatever it takes.

xjjohnno · 02-07-2009, 11:45 PM

Is that CS3 or CM3?
In CS3 you can adjust the image size keeping the aspect ratio then save as JPEG and optimise for the web.
A nice freebie that has similar functions is Paint dot net.

SteveM · 02-08-2009, 09:00 AM

Sorry....CS3 and not CM3. I'll give it a shot again.....but dropping the size (pixel dimensions) is when I ran into trouble with quality. I may need to drop quality a bit but at least it will be consistent between shots to be compared..... Thanks!

Marc Sabatella · 02-08-2009, 12:42 PM

If you're serious about comparing lenses, you're better off cropping than resizing, as most of the subtle differences would be rendered moot by the resize. Most people want to see 100% crops - that is, crops of any size but made without resizing.

02-07-2009, 11:28 PM	#1
SteveM Veteran Member Join Date: Jan 2009 Location: Vancouver Island, BC, Canada Photos: Gallery Posts: 3,294	Reducing JPGs I want to show pics to compare various lenses and I seem to be able to reduce a 5gb JPG via CM3 down to 870k at 72 pix per inch. I can't drop the size to 600k that this site needs without clobering quaility via a different program. Any ideas?

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02-07-2009, 11:37 PM	#2
Ole Administrator Join Date: Sep 2006 Location: Copenhagen, Denmark Photos: Gallery \| Albums Posts: 4,408	Reduce the pixel count to 2000 x 3000, 1200 x 1800, or whatever it takes.

02-07-2009, 11:45 PM	#3
xjjohnno Veteran Member Join Date: Jan 2009 Location: Melbourne Australia Photos: Gallery Posts: 2,115	Is that CS3 or CM3? In CS3 you can adjust the image size keeping the aspect ratio then save as JPEG and optimise for the web. A nice freebie that has similar functions is Paint dot net.

02-08-2009, 09:00 AM	#4
SteveM Veteran Member Join Date: Jan 2009 Location: Vancouver Island, BC, Canada Photos: Gallery Posts: 3,294 Original Poster	Sorry....CS3 and not CM3. I'll give it a shot again.....but dropping the size (pixel dimensions) is when I ran into trouble with quality. I may need to drop quality a bit but at least it will be consistent between shots to be compared..... Thanks!

02-08-2009, 12:42 PM	#5
Marc Sabatella Veteran Member Join Date: Sep 2006 Location: Denver, CO Photos: Gallery Posts: 10,685	If you're serious about comparing lenses, you're better off cropping than resizing, as most of the subtle differences would be rendered moot by the resize. Most people want to see 100% crops - that is, crops of any size but made without resizing.