From: ultred ragnusen <ultred@ragnusen.com>
Subject: Re: Windows freeware to lock in a 3: or 4:3 aspect ratio for cropping
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From: ultred ragnusen <ultred@ragnusen.com>
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 11:53:56 -0800
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wrote:

> In Irfanview:
> # Create a pre-selection for your crop by Click&Drag with your mouse.
>   (Be sure, the upper left corner starts on the correct position.)
> # Press <Shift+c> to get the CustomCrop dialog.
> # Adjust the Crop to 3:2 ratio (or whatever ratio you like) and click
>   the button <SaveAndDrawOnImage>
> # Fine-tune the extent of your crop by dragging the borders of the crop
>   with your mouse while *keeping the <Alt> key pressed*.
> # If need be: Re-position the crop area by dragging it with the *right*
>   mouse button.

Thank you for answering the question, as your answer is perfect, if
unintuitive!

Q: What Windows freeware locks in a 3:2 or 4:3 aspect ratio for cropping?
A: Irfanview (and Microsoft Photos and The Gimp - but they're cumbersome).

How to force a fixed aspect ratio in Irfanview crop commands:
# Doubliclick on the image (which opens very quickly in Irfanview)
# Left click drag & then lift up at your approximate desired crop area 
# Irfanview: Edit > Create custom crop selection (aka <shift+c>)
# In the "Create custom selection" form, choose your desired aspect ratio
# In the "Create custom selection" form, press "Save and draw on image"
# To adjust just the location, right click on the selection box & drag 
# To adjust the area, hold the keyboard <alt> key & left-click drag an edge

By far, Irfanview is more convenient than Microsoft Photos (slow) or The
Gimp (complicated), so this is clearly the way to go - and - besides -
nobody suggested a better solution anyway! :)