cropping

[mav]

lots of photos show cropped 100% 50% etc, what is 100%. or 50% crop , ive no idea, i crop untill i am happy with the image

 

[woof woof]

To me it's when I zoom in in CS5 (my processing package) to whatever percentage and then crop what's on the screen to be my final image.

For example, this is a whole picture.

But I decide to zoom in and crop it...

and I end up with a xx% crop.

 

[sk66]

Interesting question; or rather, my answer isn't as straight forward as one might expect.

Whenever I say it's a 100% crop it means the image is full resolution; and usually at such a size that it will display unresized by the browser/forum/etc... e.g. it's a section of the original capture that is 800px wide, uploaded at 800px wide, and displayed at 800px wide; like this.





But if I say it's "approx a 50% crop" that means in image area/pixel dimensions... I.e. the whole image was 8256px wide and I cropped it to ~ 4100px wide. Even though the image was then resized or is being displayed smaller (such as the 1024 resize this forum applies).
This is an example of an ~ 50% crop of the same image the 100% crop above came from. Original 8256x wide, cropped to 4130px wide, and currently at 1024px tall.



Note that a 50% crop in both height and width is a 75% crop (25% of original image area remaining).

 

[TimHughes]

as far as I know 100% means cropped so the pixels on the screen are 1:1 as captured on the sensor. i.e. 1024px wide out of 6000px that was available.