Poor copy of the Nikon 300 f4 PF ?

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Bmark Senior Member • Posts: 1,984
Poor copy of the Nikon 300 f4 PF ?

I was planning on using this lens for eclipse photos on a tracking motor, but I was not satisfied with the test shots of the sun, the sunspots were not that sharp.  So I've done some basic testing and determined that my lens needed a fine tune of +10 and that helped, but this lens is still not as sharp as I'd expect.  Here are test shots with the 300 pf, my 300 f4 D, and my 200-500 at 300 mm.  All at f5.6.  The only processing is to crop the images down to the size of the test chart and to export the files as JPEGs.  I used mirror up and a remote for all images.

300 f4 pf

300 f4 D

200-500 at 300 mm

To my eye, the PF is just not that sharp and the 200-550 is the best.

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