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Hi Jeff,
Nice photos of the Vulcan, with good lighting. Have you made any adjustments to the focusing on your lens using the Sigma dock, and how many photos are you getting at 600mm which are as sharp as the ones you've posted above?
I'm finding some of my aircraft photos at 600mm are fairly sharp before any PP, but a large number are soft or out of focus, but I haven't decided whether to devote a day to fine tuning the focus or to dismiss it as heat haze (assuming British weather has been warm enough to cause this!)
Cheers, John
Nice photos of the Vulcan, with good lighting. Have you made any adjustments to the focusing on your lens using the Sigma dock, and how many photos are you getting at 600mm which are as sharp as the ones you've posted above?
I'm finding some of my aircraft photos at 600mm are fairly sharp before any PP, but a large number are soft or out of focus, but I haven't decided whether to devote a day to fine tuning the focus or to dismiss it as heat haze (assuming British weather has been warm enough to cause this!)
Cheers, John