Sigma 18-35/1,8 coma

Started Mar 7, 2014 | Discussions thread
OP chary zp Senior Member • Posts: 1,464
Motion blur? Really?

AksCT wrote:

Calssic hallmakr of "coma" is when bright spots are off-axis. In both pictures, spreading is all over, most likely caused by motion blur.

Well, how come the "motion blur" is only present in the corners, namely going / in the top left corner and \ in the top right corner, and not present in the centre of the image? And how come that motion-blurred are only the stationary "sharp spot" lights and not the stationary buildings, for example? See the two church towers in the top left corner or the greenish flat windows in the buildings on the horizon on the top left corner.

If it isn't coma, what is this effect called? I seriously doubt it is motion blur, from stationary street lamps.

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