Re: [Adobe_Photoshop_Techniques] JPEG size and resolution vs file size

Bruce, what size is the original image in pixels?

Andy

> **
>
>
> Hopefully someone in the group can clear up some confusion for me.
> I am using CS5 but I think this apples to most versions of PS and PSE.
> I set my image size and resolution and crop, example:
> w-4"
> h-6"
> 300ppi.
> When I save as a JPEG, I an give a dialog box asking to select file size
> from small to maximum. The example will yield the following results for
> file size:
> Large - 1.45 MB
> Medium - 157 KB
> Small - 85 KB
> When re-opened in PS, all will still show as having the original settings
> of 4" x 6" x 300ppi and when zoomed to 100%, seem to have equal detail.
> How can different file sizes contain equal amounts of information?
> What am I missing here?
> Thanks,
> Bruce A.
>
>
>

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