I'm not sure who might have made such an erroneous statement since all
digital images do require sharpening (including those from a scanner).
In fact, when done properly, digital images should be sharpened twice.
The first sharpening is called "capture sharpening". It is a light
sharpening and is independent of any planned use of the image. This is
the type of sharpening done in Camera Raw. The next sharpening is called
"output sharpening" where the degree of sharpening is related to output
print size. Such sharpening is obviously not done until a final image
is cropped and sized for a particular print size. I'll leave the
discussion to this link
<http://lightroom-news.com/lightroom-11-update/sharpening/>
Brian Swale wrote:
> A little while ago, somebody stated categorically that images from digital
> cameras do not need sharpening. Or that's how I remember it, anyhow.
>
> My experience is the opposite. I have so far only had Olympus digital
> cameras, and of these only in the E series.
>
> To use one constant measure, I refer to the sharpening/blur tool in
> Faststone Image Viewer. This runs from 0 to + (I have never looked for the
> upper limit) to sharpen, and conversely to - (an increasing degree of blur).
> When sharpening is applied to a jpeg image, the effect can be seen quite
> rapidly, and it is easy to see if any particular image needs 1, 2, 4 or
> whatever levels of sharpening, and similarly, but observing the effect on
> edges such as a mountain ridgeline, it is easy to see if to much sharpening
> has been applied in any particular instance. In my experience, too much
> sharpening shows up as a "halo" effect. So, one can undo, and try again.
>
> So I have found that (with cameras on tripods) the E-1 images generally
> need +4 degree, and the E-3 & E-510 about +2 or +3; but sometimes
> nothing is to be gained by sharpening. Only trial shows this.
>
> As far as resizing in steps with a sharpen after each resize, I think it was
> CH
> Ling who showed me how to do this and demonstrated what there was to
> gain, when I was trying to resize this picture for the Olympus Odyssey; just
> look at all the lines, and with the wrong technique, they all had massive
> jaggies, even though the lines seem to be curved (they are not - just lots of
> straight lines).
> http://www.reflective-moment.com/olympus-odyssey/bswale/picture4.htm
>
> Brian Swale.
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