Crop ratios still 'broken'

[Daniel Warner]

I have mentioned this before but I had hoped it would be fixed by now.

 

When I crop an image and choose a preset, say for example 16:9, I apply the crop.  When I then wish to resize the image, it doesn't maintain the crop dimensions precisely. It is always slightly out by a few pixels.  It's not the end of the world but it is pretty annoying.  I find I have to create a blank document with the exact dimensions I need and insert the image and drag in where I need it - this works, but it's an extra step I'd rather not have to make.

This used to work perfectly before the 1.7 update.  I can show you that if you need me to.

 

I've attached a video that shows what I am talking about

[walt.farrell]

For reference, here is your original topic:

You discussed that in the Questions forum, and you're still in Questions. At this point, you have not raised a Bug report, so it is unlikely that anything would be "fixed", especially as in your earlier topic the conclusion seems to have been that fractional pixels happen, and must be dealt with.

In the example you just gave (above, in your video) you did a 16:9 crop, and the crop tool gave you an image that was 2500 x 1406px. The Crop Tool forced the crop to an exact pixel boundary.

16:9 is an aspect ratio of 1.77777... to 1. But when rounded to a pixel boundary, 2500:1406 is 1.77809 (and some more decimals) to 1. To be 1.7777... to 1, the crop would have had to give you 2499.55555... rather than 2500px.

Resizing is willing to give you fractional pixels, even though Cropping won't, but it's not starting with an exact 16:9 aspect ratio because your after-Crop image that you're trying to resize is not 16:9, but the closest approximation to 16:9 that integer pixels can provide.

Perhaps, rather than Cropping and then Resizing, you should use the Resample mode of the Crop Tool. There you can specify the final size that you want, and the crop box will maintain that ratio while you adjust the box. And when you're happy with the composition and press Apply, you will get a final image the size you asked for.

[Daniel Warner]

Well, I managed to find a download for the pre-1.7 update and have made a video showing how it works perfectly on that version.