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<blockquote data-quote="Chris@sabor" data-source="post: 658504" data-attributes="member: 40915">I used to think the same thing when I had the Sigma 150-600 C on my D7200. After getting the D500, things changed.I put the lens on my new D500 and was hoping to be impressed with the new autofocus system. My initial photos were worse than with the D7200. I was very disappointed. I was looking at my soft and out of focus images and noticed that many seemed to be front focusing. I didn't bother with the in camera lens correction, instead I made manual corrections for the front focusing issue. After two corrections I had it bang on. I also ordered the dock and updated the firmware. This made a HUGE difference in focus speed, acquiring focus much faster and more accurately.Bottom line, my relatively cheap long zoom is sharp at 600 @F6.3. I shoot almost exclusively between 500-600mm and F6.3-F7.1 with pretty impressive results and very minimal sharpening in post. Maybe I have a &quot;good&quot; copy but, the stiff, chattering zoom-in and the wobbly front barrel remind me that it isn't perfect. I'd show you some proof but it seems I can't upload images anymore unless I change browsers and I'm not doing that so you'll have to take my word for it.</blockquote>

[QUOTE="Chris@sabor, post: 658504, member: 40915"] I used to think the same thing when I had the Sigma 150-600 C on my D7200. After getting the D500, things changed. I put the lens on my new D500 and was hoping to be impressed with the new autofocus system. My initial photos were worse than with the D7200. I was very disappointed. I was looking at my soft and out of focus images and noticed that many seemed to be front focusing. I didn't bother with the in camera lens correction, instead I made manual corrections for the front focusing issue. After two corrections I had it bang on. I also ordered the dock and updated the firmware. This made a HUGE difference in focus speed, acquiring focus much faster and more accurately. Bottom line, my relatively cheap long zoom is sharp at 600 @F6.3. I shoot almost exclusively between 500-600mm and F6.3-F7.1 with pretty impressive results and very minimal sharpening in post. Maybe I have a "good" copy but, the stiff, chattering zoom-in and the wobbly front barrel remind me that it isn't perfect. I'd show you some proof but it seems I can't upload images anymore unless I change browsers and I'm not doing that so you'll have to take my word for it. [/QUOTE]

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