When the Nikon D100 came out it was adopted as a press and wedding camera almost immediately. And for good reason, at the time a digital camera that could create quality prints in black and white, as well as color, and that accepted all of the previous Nikon AF mount lens, and even the non-AF lenses (albeit without metering). It also accepted a slew of Nikon speedlights. Fast forward to today. The D100 is widely accepted as obsolete. But who cares? I love mine. It creates wonderful images if handled by someone who understands its oddities.Â
Pros:
·     Compatible with a large array of lens
·     6.1 megapixels is plenty for most applications
·     Light-weight
·     Accepts Lithium Ion batteries
·     Uses the widely accepted CF card
Cons
·     Doesn’t meter with non-AF lenses
·     Sometimes too light
·     Plastic exterior
·     Noise can get sloppy at high ISOs
·     Poor viewfinder
The Pros  Â
This camera follows the standard Nikon ergonomics, which are, in my opinion, almost perfect. The camera is a nice size that accepts a variety of hand sizes with ease. The camera has a magnesium sub-frame and a plastic shell. This allows the camera to be light, yet, as mine will attest to, still durable. The camera yields a standard Nikon Electronic Format (NEF) file. It can be either compressed or not (I recommend uncompressed, as using the compressed method causes the camera to lock up when it hits the buffer). An uncompressed NEF is approximately 9 megabytes, however, they nicely compress and archive to a 5 megabyte Adobe Digital Negative, which is a much more compatible and compact file type. The lithium ion battery accepted by the D100 is compatible with the D70, D50 as well as the ability to accept batteries used by the D200, D40, and D80. Also, when using the optional vertical release/battery grip, one can utilize 6 AA batteries in a pinch (be warned though, the battery life on alkaline batteries is very short).Â
The Cons
As with all things the D100 does have its faults, quite a few of them. The first major issue is the fact that the camera does not meter with non-AF lenses, quite a few of which are absolute gems. Although lightness in a camera is appreciated in some instances, a little bit of weight can add some stability when shooting. The plastic exterior can also be a huge disadvantage, unlike its follower the D200, the plastic can be damaged and makes the camera feel cheap. The biggest issue that people complain about in this body is the noisy sensor at higher ISO settings. I personally feel that it is just fine so long as the camera is kept on RAW and exposure is maintained properly. The largest single issue that I have with the D100, which is also an issue that I have with almost all non professional digital cameras, is the tiny and dim viewfinder. When I compare the D100 to my old Nikon FM it looks downright appalling. A quick hidden pro about the viewfinder though is that ability to turn on a grid overlay that aids in composing horizons and other geometric images.
Conclusion
If you have one of these cameras and it works for you, hang on to it. If you have a digital SLR now and are looking for a decent backup, this camera could serve you quite well if you get a decent deal on it. Although it is limited in certain ways, many of the limitations are more than made-up for through the low prices that can be had these days. I would however, recommend a D70s before I would recommend this camera.       Â