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Subject: Re: Windows freeware to lock in a 3: or 4:3 aspect ratio for cropping
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From: nospam <nospam@nospam.invalid>
Newsgroups: rec.photo.digital,alt.comp.freeware,alt.windows7.general
Subject: Re: Windows freeware to lock in a 3: or 4:3 aspect ratio for cropping
Date: Sun, 18 Feb 2018 13:15:14 -0500
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In article <1sucv1hqkm69j.1srj76gl8tuo7$.dlg@40tude.net>, JJ<jj4public@vfemail.net> wrote:

> >>>>   This is designed to be simple, quick cropping and
> >>>> resizing, while retaining the best possible image
> >>>> quality when desired. (Crop a JPG and you'll
> >>>> lose some quality, 
> >>> 
> >>> not when it's a lossless or non-destructive crop.
> >> 
> >> That's true for lossless. But the cropping itself is always destructive.
> > 
> > no it isn't.
> 
> You misunderstood.

nope.

> If you crop an image to keep only the left side, the
> right ride of the image will be gone. Meaning that the crop function itself
> removes data. Whether there's an undo or redo functionality or not, that an
> entire different function.

undo/redo can only be done *if* the crop is non-destructive.

with a destructive crop, there is no undo. those pixels are *gone*.
forever.

> > bmp is obsolete.
> 
> In a Mac OS, BMP isn't even the native image container. So, I would be
> obvious that most, if not all of Mac softwares don't use BMP.

macs can read bmp, but given that the format is obsolete, it's
exceptionally rare that anyone would need to do that, on any platform
(even windows).

> In Windows however, not so. BMP is the native image format in that OS. i.e.
> used by the graphic kernel.

bmp is a file format.