Resize after cropping

Hi,

I have read the various posts on resizing etc. and I just don't get it all. All I am interested in is getting a photo back to the original size after I may have to crop it a bit due to straightening the horizon. I use cs3; any help will be appreciated.

Thanks

Why, exactly? You'll have to resample to do so, and that's not something that should be done lightly.

Just edit the photo as it is, and only resize at the end when you have specific purpose to do so.

CameraBuff wrote in post #11322358
Hi,

I have read the various posts on resizing etc. and I just don't get it all. All I am interested in is getting a photo back to the original size after I may have to crop it a bit due to straightening the horizon. I use cs3; any help will be appreciated.

Thanks

Maybe you could clarify -- the actual image size is the pixel dimensions that are in an aspect ratio which for a Canon DSLR is 2:3 (1.5). If you crop/rotate while retaining the original aspect ratio then you don't need to resize -- you can print say a 4x6 or 8x12 image using that aspect ratio. If you crop in a way that cuts into those proportions then a print will be different. Common print sizes like an 8x10 or a 5x7 or an 11x14 require that some portion be cropped off the longer dimension of an image.

So, a print size is either determined by your crop or chosen and you crop accordingly.

I see no point in resizing after cropping, it will decrease image quality. You can crop in RAW/ACR, it's quicker and easier, then you batch to jpeg.

Thanks,

To clarify what I would like to do; say I take two landscape shots in the portrait mode, one shot needs the horizon straightened and in doing this I lose some of the size in comparison to the other shot. When I print these I would like both to match in size.

When you crop the image, even just to rotate the horizon, you lose some pixels, meaning it will be a different "size" as an uncropped image although in practice you could print them at exactly the same size and not notice a difference unless you cropped a lot.

Now, if you wanted to get the cropped image back to the original pixel dimensions you will have to resize/resample it -- you can use the Image/Image Size function in PS to do this easily, just enter the original pixel dimensions (or the ones from the other image you want to match).

But, like I said, for practical purposes you can view/print your images at the same time without going through that step.

I should mention that I was assuming that when you cropped/rotated the image that you kept the original aspect ratio (you need to ensure that option is chosen in your crop tool). ACR makes it pretty easy, or you can do it in PS. That way when you resize the image it will properly "fill in" the pixel dimensions you specify without distorting the image.

Thanks tony. I will try that over the long holiday weekend. I knew I was missing the boat on this process.

CameraBuff wrote in post #11335674
To clarify what I would like to do; say I take two landscape shots in the portrait mode, one shot needs the horizon straightened and in doing this I lose some of the size in comparison to the other shot. When I print these I would like both to match in size.

You haven't clarified, because you haven't said how you are measuring size. How about posting two after-crop examples so we can see what you mean by "different sizes"?

Ok, here are two examples. If I remember correctly I had to straighten the horizon on the one with the less amount of sky

OK, the two pics you posted are exactly the same size, and if you printed them out of you software to the original they would print the same size at pretty much the same resolution (ppi) although sure, the cropped one loses some pixels.

The only time where precise pixel sizes is likely to come into play is if you submit and image and they require a certain specification in image size or resolution. The uncropped image has a bit more resolution and if that is a critical matter you have to deal with that. Sometimes you can get away with resizing/resampling to a larger pixel size -- it doesn't hurt to experiment...

CameraBuff wrote in post #11342766
Ok, here are two examples. If I remember correctly I had to straighten the horizon on the one with the less amount of sky

Both are 427 x 640. So, by "same size" you obviously don't mean pixel dimensions. What do you mean?

EDIT: My mistake. They are not both the same size (in pixel dimensions).

The one on the left is 427 x 640. The one on the right is 457 x 640.

I think what he wants is to rotate the image and maintain the size of the subject matter. When you rotate an image you get blank areas at the corners, so you have to crop to get rid of them. When you crop, it makes the image "zoom in", so you lose the original size of the subject matter.

Simply duplicate the layer, and then rotate a single layer. Then use the eraser tool on the rotated layer to make the layers match, then merge the layers.


For example...


No duplicate layer...

HTTP response: 404 | MIME changed to 'image/gif' | Byte size: ZERO | PHOTOBUCKET ERROR IMAGE

HTTP response: 404 | MIME changed to 'image/gif' | Byte size: ZERO | PHOTOBUCKET ERROR IMAGE

ok when I look at the image size of these in cs3 one shows width 10.8 height 16.2 the cropped 10.7 by 15.004 so when I set my image size to have these print as large as my printer prints I make the height 11 and the width becomes 8; the cropped height set to 11 but the width becomes 7.858 which when I print these I assume I will have more of a white border and two slightly different size prints. I have to get some more ink but I will print these later to verify what I am trying to explain.

CameraBuff wrote in post #11344783
OK, when I look at the image size of these in cs3, one shows width 10.8, height 16.2. The cropped 10.7 by 15.004. So, when I set my image size to have these print as large as my printer prints I make the height 11 and the width becomes 8. The cropped height set to 11 but the width becomes 7.858, which when I print these I assume I will have more of a white border and two slightly different size prints. I have to get some more ink but I will print these later to verify what I am trying to explain.

First, and this is only a suggestion to help us help you, but you should try to form complete sentences and use punctuation. Otherwise we see a jumbled mass of words and it's hard to interpret what you're saying.


Okay, so what you want to do is print two images at the same size, with the white borders around each to be equal? Unless you start with two images that are the same dimension, you won't be able to accomplish this. You need to crop your image to the size you want before you print, and if you crop each image to that specification then they will all print to the same size on paper.


For example, if you want to print an 8x10 image, you need to crop it to 8x10 before you print it, before you even click "Print". If you want to get the most out of your paper, you have to make a crop box that will fit the dimensions you want and use that as your template for your images. Again though, you have to do this before you print.

Using the features of your printer to "crop" your images will not accomplish this, because the printer will only fit your image, at whatever size it is, to the paper at whatever dimensions you make it. If you take an image that is 10.5x7.5, and then size in it your printer options to 11 on the long side, the printer will enlarge the image, it will not fit the image to the paper. In the same regard, if you "fit image to paper", the printer will stretch the image to fit the paper, and it won't come out at the right dimensions at all.


Starting out with images that aren't the same dimension will cause them to print at varying dimensions, regardless of what you do. You have to crop the image to the size you want, and then print it. If you want to fit images onto paper at 11x8, you need to crop all of those images at 11x8 for them to come out the same.

Did I get it right this time, or am I still missing what you want to accomplish??