Speckles all over flash photo
Thanks for the replies.
There was no snow or rain and I was using an SB900.
All I can think of is that the air felt damp, but there was no precipitation, either in the air or on objects. Nor was there any visible mist.
That's enough to cause that effect. Due to the fact that the superfine drops were near the lens and they are out of focus, they are magnified and look larger.
Could also have been small flies or mosquito.
But the problem was the speckles were out of focus!