ron_goodenow Posted February 5, 2005 Share Posted February 5, 2005 I do railroad photography as a hobby and publish a great deal on theweb. Seldom do prints. Normally I post images at 650x size, sometimessmaller. Until recently I used an Oly 2020z and 560 and when shootingin SHQ or HQ could easily do my cropping, editing, etc, and downsizean image that retained its sharpness at about 30-35k. Having steppedup to an Oly 5060, I find that I cannot get equal sharpness from anSHQ image unless I maintain a file size of about 80k. This, of course,drains server space. This happens whether I am using Elements 3.0 orbatch processing with Ifranview. Stopped off at my camera store yesterday and the guys there weretelling me that recently several customers have stopped by to discussthis issue. So.....is this a natural occurance related to the original resolutionof the photo? Is it something related to my camera and its jpegcompression in particular? Obviously, I can set the camera for HQ or one of the SQ settings andend up with more shots on my card (I have several so that is probablyirrelevant), but then should I decide to print at a large size I maybe up the creek. Another solution would be to stick with the 2020 andits faster lens for railroad photography, but then that's not all I dowhen traveling. Just wondering about this, and some practical advice (aside fromchanging resolution for each shot). I haven't noticed anyone sayingthat if one is going to publish extensively on the web one shouldshoot at lower resolutions if worried about disc or server space. Thanks for bearing with me. Link to comment Share on other sites More sharing options...
phil_young3 Posted February 5, 2005 Share Posted February 5, 2005 Hi Ron: Sorry I can't answer your question, but you gave me a great lead on the batch conversion freeware "Ifranview". I have been using "Ulead Explorer" and thought that was great, but Ifranview has some great extra stuff that Ulead doesn't have. Really appreciate it. Phil, Simi Valley, CA. Link to comment Share on other sites More sharing options...
phule Posted February 5, 2005 Share Posted February 5, 2005 I'm curious, how little disk space do you have that you need to worry about a 40-50K difference in the file size? Is it so expensive to just buy more space? It would also be helpful if you posted some of these sample photos from both cameras. Are you using an UnSharp Mask filter on these images? Link to comment Share on other sites More sharing options...
hakon_soreide Posted February 6, 2005 Share Posted February 6, 2005 If in doubt, it's always wiser to save your images originally at as large a size and quality as your memory card and shooting quantity allows, and then at a later stage resize and compress for web publishing while keeping the option open for future printing and other uses. <p> I'm using Adobe Photoshop for this, which offers a preview of the original and jpeg image when adjusting jpeg settings, but I'm sure there must be some freeware or cheaper shareware programs able to do this. This has the added benefit that it's possible to compress each image individually to what is acceptable for its image content, or to batch convert (as well as for instance adding USM) at a setting you find a good compromise between file size and image quality.<p> <a href="http://www.hakonsoreide.com/Photos">www.hakonsoreide.com</a> Link to comment Share on other sites More sharing options...
ron_goodenow Posted February 7, 2005 Author Share Posted February 7, 2005 Thanks for tips. I am not so concerned with HOW to downsize as I am interested in why SHQ files on my camera need to be saved at a higher resolution than HQ files if they are to retain sharpness for web use. Is it the camera, is it a 'natural occurance', etc.???? And, sure, I can increase server space, but because I share my photos with numerous sites, some of which I do not control, would prefer to go as light as possible. Link to comment Share on other sites More sharing options...
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