« on: April 23, 2014, 10:38:00 AM »
if coma, astig, and vignetting are good I'd happily buy this over the Canon 24 L II. all of the canon offerings make a very poor showing of the corners when doing wide-field astrophotography.
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I'm not sure this is much of a disappointment, since as far as I understand the optical design is unchanged from the existing model. And we can be sure the new one will be significantly more expensive. Of course we have to wait and see if this is how it plays out.
I'm more annoyed the street price dropped some 20% since I bought the current version, but have no regrets as it is a good leans already.
Where did you read that it was the same optical formula? I'm not doubting you - I just hadn't read that and was curious.
I usually use it only from about 16 to 28mm, because my version is not very good at 35mm