Quote:
Originally Posted by robski
Have you tried the same setup without your improvements to make a direct image comparison ?
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Rob I did suspect something like this after my clocking exercise, but when you see it in the flesh so as to speak its quite a shock.
The light was getting a bit poor and it was spitting with rain so this is not in the same conditions and I will wait for a decent day before I do a side by side. So this is a taster of the result I expect.
Ignore the red colour showing through the bar code label, its the red electrical tape sticking it in position showing through.
As before there is a full frame, crop 1, a more severe crop in crop 2, a 100% crop where the bounce really shows, and a side by side with the earlier test.
Whether lens vibration is a contributory factor to the general softness seen here is anybodys guess but the Slik tripod with 501 head is quite a heavy beast. The size of the lens footprint on the rubber of the sliding foot is I feel the major factor. When clocking it, I found that you cannot significantly reduce deflection no matter how tight you turn the locking screw. Hence I decided on increasing that footprint with the sub base.
Don