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2. Comparison gallery of image scaling algorithms - Wikipedia

   en.wikipedia.org/wiki/Comparison_gallery_of...

   Simple Fourier based interpolation based on padding of the frequency domain with zero components (a smooth-window-based approach would reduce the ringing).Beside the good conservation of details, notable is the ringing and the circular bleeding of content from the left border to right border (and way around).

3. Photo print sizes - Wikipedia

   en.wikipedia.org/wiki/Photo_print_sizes

   The alternative Super series, denoted SnR, nR Plus or nR+, has an aspect ratio of 3∶2 (or as close as possible) and thus provides a better fit for standard 135 film (35 mm) at sizes of 8 inches or above. 5R is twice the size of a 2R print, 6R twice the size of a 4R print and S8R twice the size of 6R. 4D/6D is a newer size for most consumer ...

4. Enlarger - Wikipedia

   en.wikipedia.org/wiki/Enlarger

   For example, an enlargement from a certain negative as a 12 x 18 cm (approx. 5 by 7 inch) print may be sufficient for a scrapbook viewed at 50 cm (20 inches), but insufficiently detailed for an A4 print hung on a hallway wall to be viewed at the same distance, though usable at a larger 120 x 180 cm (ten times larger) on a billboard to be viewed ...

5. Contact print - Wikipedia

   en.wikipedia.org/wiki/Contact_print

   Since this process produces neither enlargements nor reductions, the image on the print is exactly the same size as the image on the negative. Contact prints are used to produce proof sheets from entire rolls of 35 mm negative (from 135 film cassettes) and 120 (2 1 ⁄ 4 film rolls) in order to aid in the selection of images for further ...

6. Image scaling - Wikipedia

   en.wikipedia.org/wiki/Image_scaling

   Image scaling can be interpreted as a form of image resampling or image reconstruction from the view of the Nyquist sampling theorem.According to the theorem, downsampling to a smaller image from a higher-resolution original can only be carried out after applying a suitable 2D anti-aliasing filter to prevent aliasing artifacts.

7. Mat (picture framing) - Wikipedia

   en.wikipedia.org/wiki/Mat_(picture_framing)

   Caution must be exercised in selecting the type of framing desired. Art work that is desired to last long term (more than 75 years) can be damaged by improper mat boards that are used intentionally to lower cost. However, non-archival quality mat boards may be suitable for a photographic print, laser print, etc. that is not meant to last long term.