960 = (2*2*2*2*2*2)*3*5 = (2^6)*3*5 so it's divisible by 2, 3, 5, and lots of powers of 2. Prime decomposition from elementary Number Theory. Regards, Bob S.
On Sun, Aug 28, 2011 at 2:11 AM, Bob W <p...@web-options.com> wrote: >> From: pdml-boun...@pdml.net [mailto:pdml-boun...@pdml.net] On Behalf Of >> Brian Walters > >> The main requirements are: >> >> * Max. pixel dimensions: 800 x 800 pixels > > Godfrey mentioned a few weeks ago that pictures on my website seemed quite > small at 600x400. I orignally chose this when the PUG was limited to 700px > on the long since because it covers the 35mm ratios easily, whereas 700 > doesn't quite. > > I replied to Godfrey that my normal maximum for the long edge now is 720px > because it subdivides nicely and means that every picture can have the same > size long edge, which is good for consistency on the website. For example > 4/3rds is 720x540, normal 35mm dimensions are 720x480. > > The maximum of 800 has the same problem (perhaps too strong a word) as 700 > in that for some aspect ratios setting the long side to 800px means that the > short edge ends up as a fraction so you have to let your resizing software > choose which pixels to remove. For example, 35mm dimensions become > 800x533.33333... So the biggest you can actually have without this monkeying > about is 798, whereas for 4/3rds you'd get the whole lot in 800. > > This means that the website is likely to have different maximum dimensions > on each page, which makes for a jerky and inconsistent appearance in the > page transitions. > > Purely by coincidence, when I was googling something work-related last week > I found a website which pointed out that 960 is one of those magic numbers > like 720 which subdivides into zillions of different whole numbers, namely: > 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, > 120, 160, 192, 240, 320 and 480. This gives you plenty of options for > different dimensions and cropping, while retaining that important > consistency. > > Something to consider next time the max dimensions are reviewed. > > B > >> * Max file size: 300k >> * Third party equipment is acceptable provided either the camera body >> or >> lens used is Pentax. >> >> Also - as not all browsers are colour space aware, if you embed a >> colour >> space in the image, it should be sRGB to ensure the image looks right >> on >> line. I usually check the colour space of submitted images but I've >> been known to forget. > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
