PCB_smv wrote:
I am thinking of getting a mirrorless Camera and would appreciate any advice. I have a Nikon D700 and lenses but due to severe arthritis in my hands the weight of the Camera is making it difficult to use. I have read that the mirrorless Camera are lighter in weight. Again, any advice will be appreciated.
I am new here but have enjoyed the posts.
The only
systems (bodies plus native lenses) that are *significantly* lighter are Micro 4/3 systems made by Olympus and Panasonic. A Micro 4/3 system can be 1/3 the size, bulk, and weight of an APS-C/DX system, or 1/4 the size, bulk, and weight of a full frame/FX system.
If you want the "top of the heap," look at the Olympus OM-D E-M1 Mark II, and the Panasonic Lumix DMC-GH5. Those are $2000 bodies. If you want something less pricey, look at the OM-D E-M5 Mark II and the Lumix DMC-G85 (G80 in Europe).
Over 90 Micro 4/3 lenses are available. At least a quarter of them are of professional quality (and price), but overall, you'll spend less on lenses. The focal lengths are HALF what full frame lenses need for the same fields of view — i.e.; a 25mm lens on Micro 4/3 provides the same field of view as a 50mm lens on your D700. A 60mm lens on Micro 4/3 provides the same field of view as a 120mm lens on full frame, etc.
Because the focal length for a given field of view is cut in half, the depth of field for that same field of view is greater by about two f/stops. (A 25mm Micro 4/3 lens set at f/2 has depth of field similar to a 50mm lens on full frame set to f/4.)
Because a Micro 4/3 sensor has about 1/4 the surface area of a full frame sensor, each sensor site is about 1/4 as sensitive as an equivalent full frame sensor. So a 16MP Micro 4/3 sensor receives 1/4 the light that a full frame 16MP sensor does. That is equivalent to two f/stops less dynamic range and high ISO sensitivity. If you like your D700 up to ISO 6400, you will like your Micro 4/3 camera up to ISO 1600. (Put another way, a 16MP Micro 4/3 sensor has the "pixel density" of a 64MP full frame sensor!)
Knowing those three points about focal length choice, depth of field, and sensitivity is important, and will scare away some purists. In practice, however, I have not found them to be severely limiting for the kinds of work I do.