On Mon, 09 Jul 2018 12:00:14 -0700, Savageduck
wrote:

On Jul 9, 2018, PeterN wrote
(in article ):

On 7/8/2018 11:06 PM, Savageduck wrote:

The only thing I can think of was the very strong wind factor, and the
possibility that the OIS was just not able to keep up.

Try my quick and dirty test to sharp. Shoot a brick wall. That will quickly tell you if you have a lens issue.

I think that this was a case of what area of the photograph was examined (or
pixel peeked). A very high percentage of the shots have the targeted
windsurfer sail quite sharp, while the wind blown wavetops are admittedly a
mess. If there were any issue they were probably due to shooting handheld in
gusty strong wind, and my having to familiarize myself with a new lens.

Check this shot and a 100% crop of the top of the sail.

https://photos.smugmug.com/photos/i-f5k8TQh/0/9ebe2259/O/i-f5k8TQh.jpg

Now that's better.

https://photos.smugmug.com/photos/i-xJ9w5gP/0/a2225efd/O/i-xJ9w5gP.jpg

.... and that's interesting ... umm.
--

Regards,

Eric Stevens