Large Photos

[mvonditter]

Ok, since there is a 100k limit for uploads, how are some of you getting such large pics up here? Dropping the resolution or what?:o What about quality loss? Any clue what the pottom end limits are?

[tim]

Resolution dropped to 800*600 or 640*480, and use "save for web" in photoshop. Tweak the compression until it's below 100kB.

[mvonditter]

Thanks Tim, I'll try that. If it works you get all the accolades, if it doesn't. well....are you married? :-)

[BigRed450]

Drop your dpi to 72 set your image size to 600-800pix on the long side, sharpen with USM of A-500 R-0.2 and save at jpeg compression 8. On average it will give about a 70KB file... Sharpening after resize is a critical step when resizing for the web....

[felix21685]

you know im not a big fan of microsft prods.
but theres a image rezizer power toy ..i think thats what its called.
you just right click on the picture then click rezize and you can choose what size and its done usually very small..try it out..

[drewmk2]

I generally dont like the "save for web" function in photoshop for these type of saves, because you loose the exif data.

All you firefox users might like this little plug-in. I know i do.

http://ted.mielczarek.org/code/mozilla/fxif/

[tim]

Drop your dpi to 72 set your image size to 600-800pix on the long side, sharpen with USM of A-500 R-0.2 and save at jpeg compression 8. On average it will give about a 70KB file... Sharpening after resize is a critical step when resizing for the web....

DPI is irrelevant when you specify the image width in pixels. Giving incorrect information is worse than not saying anything. Read this thread (http://photography-on-the.net/forum/showthread.php?t=75503) if you want to understand this stuff.

I generally dont like the "save for web" function in photoshop for these type of saves, because you loose the exif data.

That's part of the idea - exif takes space in the image, and often I want to strip it out. Save for web makes significantly smaller files than "save as".

[BigRed450]

Giving incorrect information is worse than not saying anything. Read this thread (http://photography-on-the.net/forum/showthread.php?t=75503) if you want to understand this stuff.



EXCUSE ME! I understand "this stuff" Very well Thank you. I guess if it is IRRELIVANT Tim, then it doesn't matter if you change it or not does it, really. However, It does make a difference when someone tries to print said image from the web... A bigger 72dpi image gives a very unacceptable printout which generally dissuades "most" people from printing online images. Another reason to drop your jpeg compression as much as possible ... PhotoShop "Save for Web" does not give acceptable results.

[tim]

However, It does make a difference when someone tries to print said image from the web...

Who prints low res images from the web? They're put up there to share, not to let people print them. The quality would be pretty bad if you printed at 72dpi. Anyway, what's important is the number of pixels, because even if I wanted to print it i'd decide on the size I want to print it myself, i'd not rely on data in the image. Does a jpg even store the ppi value? I have no idea.

[BigRed450]

Who prints low res images from the web? They're put up there to share, not to let people print them. The quality would be pretty bad if you printed at 72dpi. Anyway, what's important is the number of pixels, because even if I wanted to print it i'd decide on the size I want to print it myself, i'd not rely on data in the image. Does a jpg even store the ppi value? I have no idea.

Tim .. I showcase photo proofs on my website for MotoSports racing and you would be surprised at how many people try and print those proof and showcase photos from my website. The very large majority of these people have no idea how to save and resize these already downgraded images so it has become habit to change the dpi when resizing. As a matter of fact, at one point, I lost sales because potential customers thought that the poor quality that they were trying to print off the net was the quality of my work. Yes the jpg does store the image size data and 72dpi images print out large and aweful, just a waste of ink.

[tim]

Tim .. I showcase photo proofs on my website for MotoSports racing and you would be surprised at how many people try and print those proof and showcase photos from my website. The very large majority of these people have no idea how to save and resize these already downgraded images so it has become habit to change the dpi when resizing. As a matter of fact, at one point, I lost sales because potential customers thought that the poor quality that they were trying to print off the net was the quality of my work. Yes the jpg does store the image size data and 72dpi images print out large and aweful, just a waste of ink.

There are a lot of stupid people out there eh? I still don't think the 72ppi information is relevant for posting photos on POTN, just the pixel dimension, becuase in this case I really don't think people will be printing the photos. For your website, sure.

[Chazs]

Ok, since there is a 100k limit for uploads, how are some of you getting such large pics up here? Dropping the resolution or what?:o What about quality loss? Any clue what the pottom end limits are?

Also, many pictures are stored elswhere and just linked to in the message (i.e., not uploaded or stored to POTN).

[drewmk2]

"That's part of the idea - exif takes space in the image, and often I want to strip it out. Save for web makes significantly smaller files than "save as"."

I just figured that most of us here are looking at an image photographically, so we'd like seeing the EXIF. The extra 2k is worth it when you're posting on this forum.

[tim]

I just figured that most of us here are looking at an image photographically, so we'd like seeing the EXIF. The extra 2k is worth it when you're posting on this forum.

For sure, it's handy. I think "save for web" does more optimisation, "save as" sometimes makes files that are quite a bit bigger, and EXIF can't be too large.

[KennyG]

Why does everyone make it so complicated? Resize so the horizontal is 800. USM at 50, 0.6, 0 Save as JPG and you should find that quality 7 or 8 will come in between 80 and 100K, leaving the Exif intact.

[BobL]

Drop your dpi to 72 set your image size to 600-800pix on the long side, sharpen with USM of A-500 R-0.2 and save at jpeg compression 8. On average it will give about a 70KB file... Sharpening after resize is a critical step when resizing for the web....

I don't wish to aggravate the discussion but I agree with Tim that your post does lack clarity. I also do not think it is irrelevant because it perpetrates a misconception about resolution that I have to deal with in classes everyday, and hopefully those of us on POTN that know should be helping those that do not. Perhaps it would have been helpful to preface the advice with "To assist novices who wish to print your pictures directly from the web . .. . . . . ".

[BigRed450]

I don't wish to aggravate the discussion but I agree with Tim that your post does lack clarity. I also do not think it is irrelevant because it perpetrates a misconception about resolution that I have to deal with in classes everyday, and hopefully those of us on POTN that know should be helping those that do not. Perhaps it would have been helpful to preface the advice with "To assist novices who wish to print your pictures directly from the web . .. . . . . ".

IMHO some are aggravating this Whole discussion by arguing about something so trivial as resetting the DPI figure, which does not affect the web view of the image.... How clear does it need to be BOBL. Resize, sharpen, save at quality 8 jpg ...... WE do not want novices to print our images off the web and that is the point of changing the DPI.

Bob what is this misconception that you have to deal with? I apologize if my explaination for the DPI change was not clear enough.

Like chaz has also mentioned, Photos I post here are linked from my website where they are showcased, therefore the DPI is changed to 72dpi as explained in previous posts. I could of just as easily said change the DPI to a very large amount like 800dpi which would have also acheived the same result. Simply to dissuade people from printing from the net. Explaining that DPI change is "for the benefit of those unfamiliar with web resizing and showcasing". If they require an indepth explaination for the resolution change they simply need to ask...

[Titus213]

I generally dont like the "save for web" function in photoshop for these type of saves, because you loose the exif data.

All you firefox users might like this little plug-in. I know i do.

http://ted.mielczarek.org/code/mozilla/fxif/

My thoughts too. Thanks for the link. It is a neat plug-in...

[tim]

I use a similar plugin by opanda.