EXCERPT page containing first few paragraphs. 2024-04-18 07:58:41
UA_SEARCH_BOT_null @ 18.222.23.119
For full access, subscribe here. Or click title to login. 
Sharpening Images After Downsampling
See the previous page on sharpening during RAW conversion.
For presenting less than full resolution images on the web, downsampling is required, which is a form of discrete digital sampling, and thus some post-downsampling sharpening is needed to restore acutance (edge sharpness).
My tool of choice for sharpening after downsampling is Topaz InFocus, at its very lowest setting. I generally do not use the other deblur facilities of Topaz InFocus.
One can also use the Smart Sharpen facility in Adobe Photoshop, but I prefer the deconvolution sharpening of Topaz InFocus for my purposes.
See Making Sharp Images for more on sharpening.
Article continues for subscribers...
Diglloyd Guide to Leica is by yearly subscription. Subscribe now for about 25 cents a day ($90/year).
BEST DEAL: get full access to ALL 8 PUBLICATIONS for about 75 cents a day!
Diglloyd Guide to LEICA contains in-depth coverage of Leica M system cameras and lenses, with additional coverage of Leica M Monochrom, Leica Q.
Special emphasis is placed on Leica M lenses and certain Zeiss ZM lenses.
- Make better images by learning how to get the best results right away.
- Save money by choosing the right lens for your needs the first time, particularly the Summilux/Summicron/Elmarit choice and/or Zeiss ZM.
- Make better images, a sort of “cheat sheet” saving yourself months or years of ad-hoc learning. Processing parameters are discussed and shown.
- Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to full camera resolution, plus large crops [past 2 years or so].
- Real world examples with insights found nowhere else. Make sharper images just by understanding lens behavior you won’t read about elsewhere.
- Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
- Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.
Want a preview? Click on any page below to see an excerpt as well as extensive blog coverage, for example on Leica.