It is generally accepted that you can print an A3 format (30x42 cm) from a 6MP camera. Even though this is NOT enough for a 300 ppi resolution. You could choose to up-res the image in PS (remember - a little at the time - do this in several steps, choosing "new calculation" in PS).
42 cm equals appr. 16.8 inch. Deveided by 3008 pixel or dots it is only about 180 dots/pixel pr. inch (dpi or ppi). This is actually good enough for prints, you hang on the wall for viewing. I have had a professional printer print out two of my best panoramas in the size 0,5m x 2 m. He used 150 ppi (pixel pr. inch) for large prints like these. He does this for a living - for billboards and posters etc. for commercial use. My panoes looked very, very sharp. At the exibition where they were dispalyed at eye level, I got a lot of positive comments as too the great sharpness (made from many "frames" from the *istD) of my images/prints. 300 ppi is for small prints, that you hold close to your eyes (like a book or a newspaper), for magazines and for books. Not necassarily for prints you hang on the wall. Jens Bladt http://www.jensbladt.dk +45 56 63 77 11 +45 23 43 85 77 Skype: jensbladt248 -----Oprindelig meddelelse----- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af Bob W Sendt: 25. juni 2006 23:26 Til: 'Pentax-Discuss Mail List' Emne: Print sizes and megapixels Hi, I've been doing some calculations of print sizes and megapixels, and found something I don't understand. If we assume the correct viewing distance for a print hanging on the wall is about 90cm, and we accept that the maximum size of the diagonal of the print should be half the viewing distance, then for the 4:3rds system the print should be 36x27cm, giving a diagonal of 45cm. This fits comfortably on A3 paper (29.7x42.0cm, about 11x16" in American). Printers generally seem to print at about 300 dots per inch, which is 118 dots per cm, as near as makes no difference. So for the printed area we need (27x118)x(36x118) = 13,534,128 pixels. Yet I'm sure I read about people making high quality 20x16" prints from 6 - 10 megapixel cameras. What gives? Thanks, Bob -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.9.3/374 - Release Date: 06/23/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.9.5/376 - Release Date: 06/26/2006 -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
