On Fri, Feb 18, 2011 at 08:01:14AM +1100, Brian Walters wrote: > Hi all > > Currently images submitted for inclusion in our Pentax Users Gallery > (PUG) are supposed to meet the following criteria: > > # Maximum file size is 256kb. > # Maximum image dimension is 720 pixels on the longest side. > > >From time to time there are suggestions that these limits are too > restrictive. So, a review is in order. > > I've discussed this with Igor, and here are some general thoughts to > ponder: > > 1. We have free access to the Komkon server to host the PUG. > > 2. While space at Komkon is not a big issue, it needs to be remembered > that the PUG galleries are hosted permanently so each new monthly > gallery adds to the storage requirements.
True. But disk sizes continue to increase, while the cost per byte falls. It seems overly restrictive to limit the size of images today to what could be done affordably several years ago based solely on disk space usage. I will repeat an offer I have made in the past - I can provide free hosting on a webserver in the USA with effectively unlimited storage (starting at perhaps 50GB; beyond that I might have to request a dedicated spindle). Bandwidth shouldn't be a problem, either; the machine I'm thinking of is located at a major colo site, and the amount of bandwidth we'd use is lost in the noise). I already own the domain name pdml.us, as well. I'm not offering to set up and maintain the website, but I can provide the hosting. > 3. An increase from 720x480 pixels to 800x536 produces about a 15-25% > increase in file size while an increase to to 900x600 pixels produces a > 45-55% increase in file size (using an 80% compression factor for jpg). I'm more than a little suspicious of these figures. While the size of an uncompressed images increases predictably as the resolution is increased, the size of JPEG-compressed files is a lot harder to quantify. While JPEG file size at the same quality settings tends to increase somewhere between linearly and quadratically with increase in image pixel dimensions, that's by no means the whole story. Sometimes perceived image quality doesn't change much as the aqmount of storage consumed increases; at other times any change is very noticeable. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
