Upload & Sell: Off
Gary, I did some informal testing with different profiles with the ZM 25, and definitely the 24/2.8 is not the best choice.
Below are some photos in this order: Off, 21/2.8, 24/2.8, 28/2.8 (I), 28/2.8 (II), 28/2.8 asph, 28/2 asph. In my opinion, the best profiles are the 21/2.8 and 28/2.8 non asph (II), though there are subtle differences in the corrections applied. Not sure which is really the best one.
PS: Having scrutinized the files at 100% magnification, I believe the best profile would be the 28/2.8 non asph 11809. The 21/2.8 is really good, but it introduces a slight reddish cast all over the image which actually looks good but is different from the color balance of the original non corrected image.
L1001898 by edward karaa, on Flickr
L1001899 by edward karaa, on Flickr
L1001900 by edward karaa, on Flickr
L1001901 by edward karaa, on Flickr
L1001902 by edward karaa, on Flickr
L1001903 by edward karaa, on Flickr
L1001904 by edward karaa, on Flickr