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Re: Lenses and sharpening

Eric Stevens
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SubjectRe: Lenses and sharpening
FromEric Stevens
Date09/20/2014 05:00 (09/20/2014 15:00)
Message-ID<j1rp1atk2jersfku8fk3r7r7mg1s04tedq@4ax.com>
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Newsgroupsrec.photo.digital
Followsnospam
FollowupsSavageduck (27m)
On Fri, 19 Sep 2014 15:34:07 -0400, nospam <nospam@nospam.invalid> wrote:

nospam
In article <87vbojttf4.fld@barrow.com>, Floyd L. Davidson <floyd@apaflo.com>wrote:

Whisky-dave
original file but 'rendered' at 72DPI rather than the final copy which is mostly likely to be 300+ DPI for printing ?

nospam
there is no dpi or more accurately ppi until you print. everything is always done to the original image.

Floyd L. Davidson
Until you print... or display an image on a monitor screen. Same thing, and a different value for DPI/PPI.

nospam
not the same thing at all. set the ppi to whatever you want and the image does not change.

however, if you change the ppi the print will be different.

When it comes to printing ppi, dimension in pixels and physical dimensions are interrelated.

If you don't want your printer driver resampling your image you set the ppi to your printer's native resolution. You then chose final image size and it is resampled to produce the required number of pixels to produce the dimensions at the selected ppi. What you must also do is set your printer driver to not resize the image i.e. print at 100% or full size or whatever the terminology may be.

You should do this before you start any significant editing (except for cropping). --

Regards,

Eric Stevens

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Savageduck (27m)