Hi,
Not precisely what you want, but if you enable ‘Plugin Associate IDs
‘ in the Amazon Link Setup page, you then have access to the Amazon Link > Extras menu.
Install the Amazon Link Extras – Images plugin from there, and you can modify the image and thumbnail sizes in the Amazon Link > Settings page.
Extra options provided:
Preferred Image Size Modifier
: SL800
Retrieve the URL to an Image modified using this string, e.g. SL800 sets the width or height (the longest) of this size rather than the default ‘Large’ Image.
Preferred Thumb Size Modifier
: SL100
Retrieve the URL to an Thumbnail modified using this string, e.g. SL100 sets the width or height (the longest) of this size rather than the default ‘Small’ Image.