I use Eva-Dry rechargeable dehumidifiers in the cabinet where I keep my photography gear and other moisture-sensitive equipment. They're convenient because once they absorb all the moisture they can handle, you just plug them into a wall socket overnight and they're dry and ready to go again. No need to heat up the whole kitchen by drying them in the oven as some products require. They're relatively inexpensive (about $15 each) and supposedly good for 10 years. I also keep a sensor from my weather station inside the cabinet so I can monitor the humidity.

https://www.amazon.com/Eva-Dry-Improved-333-Renewable-Dehumidifier/dp/B000H0XFCS/ref=sr_1_cc_1?s=aps&ie=UTF8&qid=1532527708&sr=1-1-catcorr&keywords=eva-dry#customerReviews

Many thanks to everyone who responded to my original post - you've given me a lot to consider. Lots of great photos posted, too. Thanks again.

I've been using crop-sensor DSLRs (Nikon D-40x and D-7000) since switching from film cameras a number of years ago. I'm now looking to get a full-frame camera. I'm not a big tech guy, so I don't need all the latest bells & whistles or super-high MP sensors such as on the Canon 5D S and Nikon D850. I also don't shoot video. I mainly shoot landscape and nature subjects. I'd like something that's fairly user-friendly but is still capable of producing excellent results (assuming the user is competent!). Since I'll need new full-frame lenses I don't need to stick with Nikon. Some of the cameras I've looked at are Canon 5D Mk III and IV and Nikon D810. I'm also considering the Canon 6D Mk II or Nikon D750 to save weight and money. I've read tons of reviews, but now I'd like to hear from real people who have been using their cameras and lenses for awhile.

What camera and lenses do you prefer for general/landscape/nature photography?

Can you get as good quality images from the smaller cameras (6D MKII & D750) as the larger ones?

I'd like to be able to produce sharp prints up to 20 x 30.

Sorry for such a long post - thanks in advance for any ideas or suggestions you can provide.