I have posted an image in the Avian gallery and Bob Steele has come back saying that I have only uploaded 100k image at 640k on the longest side.
My image was full- frame (bar straightening) and all I ever do is in CS2 select Save for web, Reduce my image size to 640k, select high quality jpg and then optimize for 200k.
This image came out at 100k.
How could I get more from the image and keep to the upload constraints?
Graeme, CS2 is a very expensive way to go if all you do is Save for Web
I suggets the following for starters:
* Do whatever color/contrast corrections you like, save the image, and flatten it
* Image -> Image Size (set the longest dimension to 600 pixels or so)
* Filters -> Sharpen -> Unsharp Mask (start with 300/0.3/0 and tweak form there if needed)
* Edit -> Convert to Profile (convert to sRGB)
* Save for Web - set the quality at about 50-60%
This will most likely yield a file that fits with NPN guidelines.
You sound a little confused. I think you mean that your resize your image to 640 pixels on the long side and then save it optimized to 200k file size. Are you watching the slider numbers and the estimated file size, or using a number that has worked in the past. Jpeg effective compression is different from image to image. The more detail in the shot, the less effective the compression is. Less detail means more effective compression and smaller file sizes at the same compression setting in Photoshop. Your image has lots of solid tones that would compress very well making a smaller file size than say a full frame shot of something with lots of detail and texture. You can afford to go to a higher number and try saving it again. Don't rely on what Photoshop tells you, that's an estimate, check the actual file size afterward,
Thanks Guy!! I do a little bit more - but only a little bit more than save for web :o) I'll have a go at that. I've also just read the article on NPN about posting and resizing etc, so with your help, I'm sure I'll crack it!!
Rob, yes I am confused...generally :o) - Sorry, reading my post again, I can see why you think I maybe slightly derranged!!! I have put a "k" after the 640 bit on , not one, but all occassions I've written it. Apologies - was in a rush.
I usually do all my adjustments in PS etc, then sharpen last, then select Save for web, where I adjust image size to 640 x whatever, select "High quality jpg" at 100%. If it is outside the 200k posting limit, I then select 'optimise to file size' of 200k and this reduces the JPG quality slider and compresses it more I assume.
Thanks for you comments - appreciate it.
You're image was sized correctly to 640 pixels, but saved at only 100KB file size. In the "Save for Web" window, click on the right facing triange inside a circle button (just above the "Optimized" check box), select "Optimize to File Size" and enter your desired file size in the box. For an image like your Tufted Duck with a smooth background, 150KB is more than enough to prevent any noticeable jpeg artificts.
Instead of using "Save for Web" I go to "Edit in Image Ready", do a 2 up so that I can check the original and the "Optimized" version and then use the quality control slider to bring the image as close to 200KB as I can get. Then click on "Save Optimized" . Anything wrong with this? I do notice a little loss of contrast sometimes.
Richard, you're doing the same thing, only using the Image Ready interface to get there. As long as you convert your image to sRGB color space prior to saving, you shouldn't see a dramatic loss in colors or contrast. On some images I bump the saturation up +10 to compensate for the sRGB conversion (depending on the colors and tones in the image).
I scan 4x5 trannies. I have found that if I convert to sRGB toward the end of the process, I lose a lot in colors and contrast. If I convert while the image is full size, I do not. Not sure why, but I have confirmed it numerous times.
Discussion
7 repliesMy image was full- frame (bar straightening) and all I ever do is in CS2 select Save for web, Reduce my image size to 640k, select high quality jpg and then optimize for 200k.
This image came out at 100k.
How could I get more from the image and keep to the upload constraints?
Any help appreciated.
Regards
Graeme
I suggets the following for starters:
* Do whatever color/contrast corrections you like, save the image, and flatten it
* Image -> Image Size (set the longest dimension to 600 pixels or so)
* Filters -> Sharpen -> Unsharp Mask (start with 300/0.3/0 and tweak form there if needed)
* Edit -> Convert to Profile (convert to sRGB)
* Save for Web - set the quality at about 50-60%
This will most likely yield a file that fits with NPN guidelines.
Guy
You sound a little confused. I think you mean that your resize your image to 640 pixels on the long side and then save it optimized to 200k file size. Are you watching the slider numbers and the estimated file size, or using a number that has worked in the past. Jpeg effective compression is different from image to image. The more detail in the shot, the less effective the compression is. Less detail means more effective compression and smaller file sizes at the same compression setting in Photoshop. Your image has lots of solid tones that would compress very well making a smaller file size than say a full frame shot of something with lots of detail and texture. You can afford to go to a higher number and try saving it again. Don't rely on what Photoshop tells you, that's an estimate, check the actual file size afterward,
Rob, yes I am confused...generally :o) - Sorry, reading my post again, I can see why you think I maybe slightly derranged!!! I have put a "k" after the 640 bit on , not one, but all occassions I've written it. Apologies - was in a rush.
I usually do all my adjustments in PS etc, then sharpen last, then select Save for web, where I adjust image size to 640 x whatever, select "High quality jpg" at 100%. If it is outside the 200k posting limit, I then select 'optimise to file size' of 200k and this reduces the JPG quality slider and compresses it more I assume.
Thanks for you comments - appreciate it.
Graeme
You're image was sized correctly to 640 pixels, but saved at only 100KB file size. In the "Save for Web" window, click on the right facing triange inside a circle button (just above the "Optimized" check box), select "Optimize to File Size" and enter your desired file size in the box. For an image like your Tufted Duck with a smooth background, 150KB is more than enough to prevent any noticeable jpeg artificts.