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General Photography
Project 365 & Daily Photos
cbay's 2015 Journey Along
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<blockquote data-quote="Stoshowicz" data-source="post: 481375" data-attributes="member: 31397"><p>About the limiting to 1000 pix horizontal , I was looking at some results for my pix closely, it looks like it does actually help, but trying to figure out exactly what gives the best result , still defies me. I take a 24 megapixel image , and then compress to jpeg it still may be four megabytes , If I dont cut it to 1000 along the top edge it may compress further to about 30 ! Kilobytes , if I cropped it It should end up around 300 kilobytes. Basically theres a penalty for high resolution, a penalty for subtle sharpening which doesn't survive the compression , and penalty for not resizing small enough. The smart plan should be to prepare a seperate image to post up from the raw file , do no sharpening or smoothing until youve cut the size down to what will get shown, then do your sharpening and if all that compression still requires noise reduction do it then. ( but yours look good to me so I guess you dont need the prompt,, but it seems odd that <u>landscape shots</u> get scrunched down to a four or six inch presentation. One tern I posted started out as three megabyte jpeg and got crushed down to 16 kilobytes! at a 100% crop the tern wouldn't even fit on the screen but ends up looking like an upsized thumbnail <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="Stoshowicz, post: 481375, member: 31397"] About the limiting to 1000 pix horizontal , I was looking at some results for my pix closely, it looks like it does actually help, but trying to figure out exactly what gives the best result , still defies me. I take a 24 megapixel image , and then compress to jpeg it still may be four megabytes , If I dont cut it to 1000 along the top edge it may compress further to about 30 ! Kilobytes , if I cropped it It should end up around 300 kilobytes. Basically theres a penalty for high resolution, a penalty for subtle sharpening which doesn't survive the compression , and penalty for not resizing small enough. The smart plan should be to prepare a seperate image to post up from the raw file , do no sharpening or smoothing until youve cut the size down to what will get shown, then do your sharpening and if all that compression still requires noise reduction do it then. ( but yours look good to me so I guess you dont need the prompt,, but it seems odd that [U]landscape shots[/U] get scrunched down to a four or six inch presentation. One tern I posted started out as three megabyte jpeg and got crushed down to 16 kilobytes! at a 100% crop the tern wouldn't even fit on the screen but ends up looking like an upsized thumbnail :) [/QUOTE]
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