change images to widescreen images

with no loss in Q and no stretching of image

[zeus]

I have 10.000 of pictures and now I want those to be for widescreen resolution, but I dont want any quality loss and the picture shall be in original without stretching of the image, is there a good solution here.

example 1024x768 to 1280 x 768 or 1920 x 1200

I can say I got Photoshop CS, but not a expert.

[tedster]

If you have the original source for the images and they are at least as large as your target size, then use Photoshop to create a new image. But if all you have is the smaller dimension file, then making the image larger WILL degrade the quality. There's just not enough image data to make it happen the way you would hope.

You need enough original pixel data to make the pixels for your larger image.

[zeus]

the pics are In good quality so no troubles, but i got 10.000 images and I dont want to change them 1 by 1 a few clicks would be ok

[travelin cat]

zues,

a batch processor like debabelizer will do this easily. Not an inexpensive solution but with 10,000 images, time will be $$$

[Don_Hoagie]

Photoshop has its own batch processor, which you combine with the Actions panel to basically do whatever you want to a set of files. Record what you do to the first file as an Action, then batch the rest using that Action. That would be the way to go in this case.

Resizing and cropping images are basic commands in Photoshop... no expertise needed, just read the navigation tabs. As for the quality changes...

If you are cropping the image, you'll have no issue. If you're sizing down the image, you won't have too much of an issue. If you are stretching/increasing the image size, you will have a big issue. More accurately, you can't stretch an image without it looking stretched, period. You can't increase the size of an image without adding fake pixels, period. Either of those tactics are not what you want to be doing if you have any concern for image quality. If you have a 800x600 image, and want it to be 1600x1200... well then, you have to throw that one out and make a new image at 1600x1200.

The other thing is that a lot of people say they want "no loss of quality" but the fact is that 99% of people will not notice the difference between a JPEG saved at the highest quality ("12" in photoshop) and one saved at "9". Quality loss is not important... what's important is whether it looks good enough for what you're using it for. 30 foot billboards look great when you're driving by, but horrible when you're 2 feet away from them... it doesn't mean we need higher quality billboards; it means we need to stop standing 2 feet away from them.

[DrDoc]

There's also Batch Image Resizer which does wonders.