 Michelle Ross |
Saving in JPEG??? Hello! I am working with PS Elements 1.0 I think . . . and I'm getting along really well with it ... however, I am a bit confused when I go to save the image. When posting on websites, many only want the image at the 800X600 size. But then in other situations I see they want high dpi. .. when I resize my image I can change the pixels as well as the dpi but I have to uncheck the constrain proportions that is with the document size section. Then it takes me to a screen after that with 3 options Standard, optimized and progressive? Can someone help me please. I know JPEG loses quality and if it's a real important photo I save it in TIFF first after any editing/altering. . . if someone could please give me some general guidelines for saving JPEGS it would be great! Thanks
|
|
|
|
||
|
Kimberley Broyles |
Hi, Michelle - The numbers and compression rates can be really confusing. A rule of thumb to remember is that no monitor is able to display beyond 72-96dpi. Therefore, the dpi can safely be left in that range for anything you're posting online. Like you've found, constraining proportions is important. The Progressive option saves your image in a way optimal for the web; when displayed, the image will appear on the screen in a series of steps, each giving more detail and better quality, until the image is loaded. You've probably seen images like this here at BetterPhoto. If you're saving an image for print, then Standard or Optimized are fine. JPG quality is a separate issue, and it makes a big difference. Highly compressed JPG's have small file sizes, but will also be of poor quality with a lot of artifacts (chunky blocks in the image, especially on areas of solid color). Low-compression results in great quality, but large file sizes. I'd suggest you do a save-as several times from your original, saving the image in various quality settings. Then, open them and see which turn out the best. That is the best way to get a feel for the relationship between compression and quality. Hope that helps! :) Kimberley
|
|
|
|
||
|
Michelle Ross |
Thanks Kimberley. That information makes sense! One question still though . . . do I want to change the DPI for pictures that I might want to print larger than an 8 x 10? or can I keep it at the 72? Thanks again!
|
|
|
|
||
|
Tommy Luca |
Michelle, when printing any images out you generally want to set the dpi at 300, anything over is overkill. Like Kimberley stated 72-96dpi is fine for web display and 150-300dpi is sufficiant enough for printing. Kim which pet sponsor contacted you? and by the way that was right around in the ball park range for price of images question from http://www.betterphoto.com/forms/qnaDetail.php?threadID=12095 , please answer? Thank you, Tommy
|
|
|
|
||
|
Christa |
Hi Michelle, I don't don't want to confuse you now about JPEG, etc. but Popphoto.com have an article about file formatting. It's not completely relevant to your question, but it might be worth it to check it out. http://www.popphoto.com/article.php?section_id=4&article_id=1184&page_number=1 Hope this helps.
|
|
|
|
||
|
Kip T. Berger |
Great info already posted here Michelle. Further: 72ppi is resolution optimum for PC computers; and 96ppi is the optimum for Mac computers. Always save your original photo at the highest size & resolution possible without compression. Then work on copies to change any sizes for output to web,etc. Keep "constrain proportions" when resizing to keep your image proportions from being skewed. Try to use a large image and then crop the size you need from it when possible. When not possible, and you need to resize, use bi-cubic interpolation to get the best results for photos. When working on an image, try to save the final as the format native to the program you do your work in, as generally they offer saving layers, and lossless compression options. Then save a duplicate as a tif or jpeg for output.Good luck with your learning!
|
|
|
|
||
|
John P. Sandstedt |
You should do all editing in Photoshop Elements' native file format PSD, or in TIFF. That's because there's nothing lost. Of course, the files are large. When I scan an image, I scan at 600 dpi. If I choose a 4X6 file I wind up with a +/- 20 MB file. This gives me lots to work with - for cropping, etc. Remember, when you crop, you cut off pixels that can't be recovered as such. If I want to print an 8X10 print [the limit of my printer, I change to 300 dpi. The file size stays about 20 MB because the number of pixels stays the same. Almost all printers are set to a default of 240-300 dpi [amount of ink laid onto paper.] Don't be fooled into any setting below 240 dpi. But, anything higher than 300 is wasted since the printers don't know what to do with these settings. When you go to send a file via e-mail or, if you're only interested in viewing on your monitor, you only need 72-96 dpi. That's because of the monitor's resolution. Once again you can save in TIFF, but PSD sometimes can't be read by everyone's systems. When you go to JPEG [a lossy file format] you'll lose pixels that can't be accurately recovered. So, if you have any plans for a recipient to print one of your files, be very careful about JPEG's. That is, don't shrink them to 72-96 dpi, keep them at 300. Generally, this will not be acceptable for uploading to web contests, but your addressee may be able to get a decent print. If you're digital camera records images in JPEG, you'll need to check things very closely once you go into Elements. My daughter-in-law sends my pictures she took with he Canon S230; typically, I see a 21" X 28" picture at 72 dpi. I shrink the file to 4X6 at 300 dpi to keep the total pixel count and avoid lossy issues. Once I have the smaller file, I can edit it as I would a scanned image. Hope this helps. Happy New Year.
|
|
|
|
||
|
Michelle Ross |
Thank you everyone for your reponses. I can comprehend the concepts of all of this but am still unsure exactly how I'm supposed to do it. This is the situation. I take the photos on XFine/Large format which is giving me a 3008X2000 JPG image. Because I only have two memory cards I've been transfering them to my hard drive AND a CDRW(separately). I've then been doing any editing from there. What my end situation will be on some of these photos is I will upload them to various websites for printing purposes. Occasionally I will print from home but for the real important/special ones I will upload them. I open the file which is already a JPG to start with .. . I do the editing. . . then I save in TIF if I think I may have additional editing to do or if I'm ready to send it to print then I save it as a JPG. when I go into the image resize option The top section is Pixel Dimensions which is the same size I take my pictures on and it is 3008X2000. Then the next section is Document Size which is set automatically 41.778 X 27.778 and then under that it says Resolution 72 pixels/inch. Then under that is Constrain Proportions with a check(default) or I can uncheck then under that Resample Image with :Nearest Neighbor;bicubic;or bilinear and it is set to bicubic. If I put 200 in the Resolution then it knocks up the pixel dimension to 8356x5556 but the document size stays the same? Does this increase the file size? I guess I need to buy Photoshop for Dummies because I read and read then then mass confusion sets in. I hope this isn't total confusion to everyone.
|
|
|
|
||
|
Kimberley Broyles |
You should be able to resize your pictures to the desired print size while saving them - saving a 3008x2000 image for a 4x6" print, for instance, is overkill. Tommy, the company was Natura Pet* and they used the photos to market their Karma Organic dog food. They made huge tradeshow banners from my 2.11mp images...Amazing! There is a collage of the four images posted at TrekLens. If you go to my blog and search for Natura, I have more info there. *We'll see if HTML works here in the discussions! ;)
|
|
|
|
||
|
Michelle Ross |
Okay Next dumb question for the day .. . If I burn the edited images in JPG format to a CD will they lose any quality? If not then I will take these images from CD and upload to my websites. I only have dialup at my house but have access to DSL connection with our laptop. So in essence I need to be able to burn the large files to a CD and then upload them later. thanks for all your help!
|
|
|
|
||
|
Kimberley Broyles |
That's not a dumb question at all, especially judging from how many times I've heard it asked through the years. I wondered the same thing, until someone pointed me in the right direction, too. JPG images only lose quality if opened and saved again as JPG's or another lossy format. Just copying the original files to a CD does not denegrate their quality at all.
|
|
|
|
||
|
Bunny Snow |
Kimberley wrote: < Is that the reason for copying altered pictures to PSD or PDD until the work is complete, before copying them to JPG to final display or use? I have no knowledge about PhotoShop, as yet. Bunny
|
|
|
|
||
|
Kimberley Broyles |
Hi, Bunny. Yes, that's why. You never want to save and resave JPG's. What I usually do, just so I don't have a "D'OH!" moment, is copy my file to a new file name first, then open my duplicate and use that.
|
|
|
|
||
|
This old forum is now archived. Use improved Forum here
Report this Thread |
||