Hi Lynn.
Based on your info provided here
and on the info and replies on your thread, I get the impression that you
may be
missing some key info that will enable you to get many more AF hits out of your
current gear.
First of all, as others have eluded to, you should be getting much better images with your
70-200 f2.8 VR compared to the AF-S 70-300 VR. The
70-200 is a pro lens whereas the
AF-S 70-300 VR is a consumer grade lens. About 95% of the people on this forum indicate that their copy of the 70-300 VR lens is
soft after 220mm. I tried 4 copies of this lens and each one was soft after 220mm even at f8 with very fast shutter speeds. So, either your idea of a "sharp image" is not quite up to the same standards as others on these forums or something is wrong with your 70-200 f2.8 VR lens
and / or your D7200
settings need to be "corrected / refined".
AF Fine Tune... Have you used the D7200 AF Fine Tune feature for ALL of the lenses that you are using (70-200 f2.8 and 70-300 VR)? If not, then I would definitely look into that aspect. One simple setting (for each lens) can have amazing
AF accuracy results. You can have one AF Fine Tune setting
for each lens and / or lens and TC combo. The camera will remember the specific setting for each of your lenses.
AF Calibration and lens alignment... If your 70-200 f2.8 VR lens has not been serviced, then perhaps you might want to send it in (during your off-season) for lens element adjustment and AF calibration. After sevice, you may need to change the D7200 AF Fine Tune setting for that lens.
AF Settings... For your moving subjects... Ensure that you are using AF-C mode, Dynamic single AF point or Dynamic 9 AF points (not Dynamic Area AF). Set the AF-S and AF-C Focus Priority options (2 settings) to "Focus" (not "Release").
Shutter Speeds... Pixel density... With today's very high pixel density sensors like the one in our D7200 cameras, we must keep the shutter speeds up. Why? Because unlike the previous 12mp sensors (D300), these sensors will "pick up" / capture even the slightest of movements.
Shutter Speeds... ISO... The use of higher ISO settings can be greatly enhanced with a good, dedicated, NR (noise reduction) software ap. I like Topaz DeNoise. Knowing that you can easily clean up any noise with a simple button click within a good NR ap will allow you to use higher ISO values to keep your shutter speeds up.
200-500 VR... With regard to your comments about the 200-500 VR... So many very experienced / knowledgeable people on this forum have shared numerous sharp-at-500mm images from this lens. I would look at several of the previous threads about this lens. Just use the "Search this forum" box at the top of the list of threads to search for 200-500. When the results are displayed, click the "Only in titles" chkbox. You will find lots of great images from that lens.
Here is one thread about the sharpness between 80-400g VR and the 200-500...
https://www.dpreview.com/forums/thread/3952343
New AF-P 70-300 lenses... I have the
DX version of the new AF-P 70-300 VR lenses. I have a great copy. Unlike Nikon's previous 70-300 lenses, a
good copy of this AF-P
DX 70-300 VR lens is
sharp wide open at 300mm (f6.3). But, unlike the brand new
FX model, the DX model
does not have an external VR switch. Many Nikon bodies, including our D7200 bodies, are
not yet "fully compatible" with these new AF-P lenses. There are problems in AF-
C mode with the
DX version when the shutter release button is used to
initiate AF. Using BB AF is a work-around - but, not a good option for me. We need firmware updates.
If you wanted to get one of these new AF-P 70-300 lenses, then I would suggest the DX non-VR (very cheap) or the new FX VR version.
Prior to the announcement of the new FX version, if I had to do it all over again, I would have purchased the non-VR version of the AF-P DX 70-300 lens. These new AF-P lenses have very
fast AF and
great IQ and
bokeh. The
DX version has a
very short MFD - that makes it great for butterflies.
I hope this helps in some way. Please get back to us if you have made any progress with capturing better images with your current gear.
Wayne