View Full Version : NEWBIE Help with UpSample & Color Correct 60 Photos
GHO64
17th of March 2004 (Wed), 13:16
NEWBIE Question, PLEASE HELP
I have 60 low resolution photos that I want to UpSample, Color Correct & Sharpen in photoshop 7 to
produce a Slide Show. The size of the image is "Width=1000 Pixels & the Height=1488 Pixels"
I have the following questions:
1..... What is the best size for slide show display?
2..... Where can I find an action that will Upsample to the size you suggest?
3..... How do I post a sample image for your review & suggestions?
I also need advise on the fastest & simplest
method to correct & up size these 60 photos. Any suggestions would
be greatly appreciated
Thanks Again & Best Regards, GHO64
http://home.att.net/~gho64hersul/048_12.JPG gho64
maderito
17th of March 2004 (Wed), 14:25
NEWBIE Question, PLEASE HELP
I have 60 low resolution photos that I want to UpSample, Color Correct & Sharpen in photoshop 7 to
produce a Slide Show. The size of the image is "Width=1000 Pixels & the Height=1488 Pixels"
I have the following questions:
1..... What is the best size for slide show display?
2..... Where can I find an action that will Upsample to the size you suggest?
3..... How do I post a sample image for your review & suggestions?
I also need advise on the fastest & simplest
method to correct & up size these 60 photos. Any suggestions would
be greatly appreciated
Thanks Again & Best Regards, GHO64
http://home.att.net/~gho64hersul/048_12.JPG gho64
1. 1000 X 1488 pixels provides adequate resolution for any web or computer-based slide show. You will probably be "uploading" from the digital camera storage media to the computer application. You may want to resize (to a height of 600 to 800 pixels) and otherwise adjust image parameters to keep file sizes within reasonable limits. 60 pics can represent a BIG slide show, depending on the application.
2. What application are you using to present your slideshow? This is a digital forum, so we can presume you're not talking about film transparencies.
3. Why do you need Photoshop? It looks like you're using a point & shoot camera which should provide pics ready for display right out of the camera.
4. I corrected your "image" tags so that you example pic would show up on the forum here. The tag is [img]...[/img].
GHO64
17th of March 2004 (Wed), 14:54
Hi Maderito,
These are digital images supplied by the Film Processing Lab from negative film taken with a Canon EOS V Camera. The film is not available and the quality of the sample image JPG file is not acceptable. That is why I have the following questions:
1. What is the best size resolution for slide show display?
2. Where can I find an action that will Upsample to the size you suggest?
3. What is the fastest & simplest method to correct & UpSample these 60 photos.
Any suggestions would be greatly appreciated. Thanks GHO64
Roger_Cavanagh
17th of March 2004 (Wed), 15:08
As Woody says your image size is OK for a slideshow. Those dimensions will fill all but the highest res screens.
Unfortunately, I don't think batch colour correction and sharpening will work very well. You might get away with standard colour corrections, if all the pictures have been taken under the same conditions.
What I would do is record an action while you fix one image, and then apply that to the others. DO NOT TRY Auto-levels - this will most likely give crap results on some images. Try to find a picture that has some neutral coloured object and use that to set gray balance with levels or curves.
If the sample image is typical, I am not certain what to recommend wrt sharpening. I would not want to sharpen a batch of images with the same settings. But if all else fails maybe a light USM at 100/0.5/0 would so some good. There is a lot of noise in the sample picture, which will look bad, if you do much sharpening.
I've some articles on creating batch actions here:
http://www.rogercavanagh.com/actions.htm
Regards,
GHO64
17th of March 2004 (Wed), 15:21
Hello Roger,
I am happy to see your reply on this forum. All of the images look DEAD as the sample does. If anyone could salvage these files, it should be you (smile). There must be some simple way to improve the appearence of these files. Thank You for your response, Best Wishes. gho64
Roger_Cavanagh
17th of March 2004 (Wed), 16:51
If anyone could salvage these files, it should be you (smile). [quote]
[sound of big kissing up...] :D
[quote]There must be some simple way to improve the appearence of these files.
Says who? :)
I took another look at your sample image
1. I used Neat Image to get rid of some noise.
2. There's a nasty yellow cast. There's nothing that can be sensibly used to take a gray balance from so I used the colour balance tool, and shifted the yellow-blue slider 50 points towards blue.
3. I applied USM 150/0.5/0
I tried the same USM on the picture before Neat Image - yuck! Nasty sharpened noise artefacts - no good at all.
If these are all 8-bit images, then maybe the free version of NI will do for you.
Regards,
GHO64
17th of March 2004 (Wed), 17:06
Thanks Roger,
What is the URL for Neat Image & Please Post your results with a simple step by step explanation on how you did it so I can duplicate it on all 60 images. GHO64
maderito
17th of March 2004 (Wed), 19:57
My suggestion: keep it simple.
Your posted pic has the severe yellow caste Roger noted. It actually corrects fairly well with "auto color" which in my experience is unusual. If all the pics were taken with flash, you might get away with the same color correction approach with batch processing.
So here's your action:
1. File -> Automate -> Auto fit: choose w=800 and h=800 pixels
This will resize landscape orientation shots to 800 pixels wide and portrait orientation to 800 pixels high. Choose another dimension if appropriate.
2. Image -> Adjustments -> Auto Color
3. Filter -> Sharpen -> USM: 100/0.5/0
4. Save As (in different folder), JPEG, quality=8 or 10.
5. Close
Run the 60 pics again substituting "Auto contrast" for "Auto Color." You won't get bad color shifts if the original image is OK.
Choose your best pics from the 2 batch runs.
Here are 2 examples.
Removing color cast by adjusting white point in levels (before/after):
Pic1 (http://display.lifepics.com/imgdisp.asp?filespec=%60foxhx2cuxmwdogx%5D9%3C%3D8 %3B9dOjeOrmlfsqe6%6087ptq%0C8288%3AB%0F4%3A385%3A)
Auto Color:
Pic2 (http://display.lifepics.com/imgdisp.asp?filespec=%60foxhx2cuxmwdogx%5D9%3C%3D8 %3B9dOjeOrmlfsqe8%60%3A7ptq%0C8288%3B%3C%0F4%3A385 %3A)
Happy batching. :)
vBulletin® v3.6.12, Copyright ©2000-2012, Jelsoft Enterprises Ltd.