DoninIL wrote:
I’m seriously considering getting a second camera. Too often I have the wrong lens on for the picture and don’t have time to change to the right one.....
For this type of use, rapidly switching back and forth between two cameras that are fitted with different lenses, I'd recommend you get another D7000.
It is far easier to use identical models this way, rather than having to pause to remember even slightly differences between a couple different models.
I shoot this way a lot with a pair of Canon 7DII now... previously used a pair of 7D... before that three 50D... and before that a pair of 30D. I tried using different models together, but found it made for a lot of mistakes when shooting rapidly if the controls were even just slightly different. For example, a full frame camera I also use (but almost exclusively in more sedate shooting situations) has controls slightly different than the 50D that I used alongside it at one time. The image playback and image delete buttons are reversed from one model to the other.... always had to slow down and be sure not to accidentally delete an image! There were several other small differences, that made switching back and forth a little bit slower process.
So, for your purposes, I highly recommend two identical models. Get another D7000 and continue to use the one you've got. Or, if you are going to upgrade to D7200.... get two of them and sell off your D7000.
As I understand it, one of the biggest improvements with the D7200 was a much bigger buffer than the earlier models. This allowed for more shots in a continuous burst, something the D7000 noticeably lacked, especially if shooting 14 bit RAW.
it also helps that two identical models are certain to use the same memory, batteries, chargers and accessories that can be rather model-specific such as remote releases, quick release plates, battery grips, etc.
There
are times and places a full frame (FX in Nikon-speak) camera can be useful. But, in all honesty, most people really don't need FF/FX... DX is perfectly adequate for all but the largest prints or highest ISOs. Problem is, people buy into the myths and evaluate their images at utterly ridiculous magnifications on their computer monitors. An 18MP image at 100% on a monitor is equivalent to making a 40x60" print from it, then viewing it from 18 or 20" away.
Of course it looks like crap! But if you back off to actual size (25%? 33%?) it will be printed such as 8x10 or even 11x14 or 13x19.... you can hardly tell any difference between the shots from FX or DX. FX is even less necessary if all you'll be doing with the image is sharing it online in typical Internet size and resolutions. In other words, most FX users are themselves the only person who ever actually sees the difference, when evaluating their images at really high magnification on their computer monitors. By the time they have resized for the intended usage, unless that happens to be for a particularly large print, other folks viewing the images quite likely won't be able to see any difference.
FX does have a few advantages, besides the ability to make larger prints. They also typically can be used at a bit higher ISOs... simplistically, less crowded sensors make for less heat and cross talk, both of which can mean less image "noise". Also, Depth of Field is a little different. Actually DoF itself is the same, except we use different focal lengths or working distances with FX, making large apertures "seem" larger.... FX also allows a bit smaller apertures before diffraction is an issue. However this is because any given print size is less enlarged from an FX image. For example an 8x12" print from DX is roughly 13X magnification.... while the same print from FX is 8X mag (both assuming little or no cropping).
For those reasons I have a FF camera in my kit, to complement my crop sensor cameras. But shooting rapidly, switching back and forth between cameras... I always use two identical crop sensor cameras. And, I find I use the crop cameras at least 10X as much as the FF. I've upgraded my crop cameras twice, but am only now starting to consider upgrading my FF.
Besides... if a pair of D7200 refurbished is going to stretch the budget, heck an FX camera will typically be even more expensive. In addition to the cost of the camera body itself, to take full advantage of it you'll also need FX lenses, which tend to be bigger, heavier and more expensive.