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<blockquote data-quote="Don Kuykendall_RIP" data-source="post: 516172" data-attributes="member: 6277">having just come from the DX world I do have a few questions.&nbsp; I always used the 1.5 time the lens length for shutter speed and if possible I did 2x.&nbsp; Went out with my 70-300 on the D750 today and shot at the Zoo. But first I did test/tune the lens.&nbsp; Sitting on a tripod and a longer than normal distance for tuning. I checked it at about 50 feet and it was less than 2 inches off. Now back to the zoo...I set the camera to auto ISO since it was late afternoon and the sun was dropping fast. shadow to sun and back to shadow... I also set Minimum Shutter speed to normal and it matched the zoom length all afternoon. Was also a test of low light capabilities of the D750.&nbsp; So many of the photos looked soft and I am thinking it looks like motion blur. I did check the focus point in Lightroom and it is dead on where I wanted it to be. I could also tell that there was no place anywhere that was in sharp focus .&nbsp; So my question is... What is the minimum shutter speed that you use when shooting?&nbsp; Is there anything else that might be causing my photos to be soft?&nbsp; they look good at full frame but when I zoom in on Lightroom to 1.1 that is where they lose it. By comparison the D7100 does not look soft.</blockquote>

[QUOTE="Don Kuykendall_RIP, post: 516172, member: 6277"] having just come from the DX world I do have a few questions. I always used the 1.5 time the lens length for shutter speed and if possible I did 2x. Went out with my 70-300 on the D750 today and shot at the Zoo. But first I did test/tune the lens. Sitting on a tripod and a longer than normal distance for tuning. I checked it at about 50 feet and it was less than 2 inches off. Now back to the zoo...I set the camera to auto ISO since it was late afternoon and the sun was dropping fast. shadow to sun and back to shadow... I also set Minimum Shutter speed to normal and it matched the zoom length all afternoon. Was also a test of low light capabilities of the D750. So many of the photos looked soft and I am thinking it looks like motion blur. I did check the focus point in Lightroom and it is dead on where I wanted it to be. I could also tell that there was no place anywhere that was in sharp focus . So my question is... What is the minimum shutter speed that you use when shooting? Is there anything else that might be causing my photos to be soft? they look good at full frame but when I zoom in on Lightroom to 1.1 that is where they lose it. By comparison the D7100 does not look soft. [/QUOTE]

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