Hi, Took my wife for her first time to Yosemite in Early May this year. My 7th trip. Some tips to share. Early April is Very EARLY. The northern highway along the mountains toward Nevada have been closed both years when I went in early May. Many other trails and parts of the park were also closed this year. But, the heavy snow melt created more waterfalls than I had ever seen before. Yosemite is best seen with reservations for the park tour buses to allow you to get back to your car or motel in the park. Make reservations at the lodge for dinner months in advance also. More advice, even in early May, there were no parking spots to be found on the weekend. Don't plan on getting one. Use your weekend outside the park or arrive before the weekend if you have lodging reservations in the park. - Bought a 15-30 zoom specifically for this trip and put it to good use with my d850. My 24-70 got a good workout, less for my 200-500. Carried d800E and d850 bodies, lenses, extra batteries, etc. Built up my stamina for months in advance by taking 5+ mile walks with a 26 pound backpack. The day we walked to mirror lake and many other areas of the park was somewhere between 15 and 20 miles. - Was planning to write about Yosemite and the heartbreak of seeing all the fire damage caused by the fires in 2018. More of that when I post an introduction or as a separate posting.

I shoot with D800e and D850. Nikon USA will not confirm a camera or lens is USA or gray market until you send it to them for service. If it is not USA s/n, Nikon USA will not repair it or supply parts to an outside camera repair. Even a pawn shop should give more $$$ for a D850 body than this selling price. If the price is real and the camera is real, and it works, it still smells fishy.

focus is a bit 'soft'. You are shooting with available light - diffuse soft lighting will NOT look 'sharp' compared to more directional lighting. Large lens apertures will not be as sharp as a mid-range lens aperture. You probably were shooting at slower than 1/250 second shutter speed equivalent. Learning how to hold and use a camera at slower shutter speeds/available light is a skill that takes time - like shooting a gun. Best bet is to use a monopod or tripod for dramatically sharper results with a smaller lens aperture and slower shutter speed. You have to experiment with your camera's ability to take available light pictures vs. how much the image is degraded by the camera's pretending to simulate high speed film. Many cameras can take great photos up to an ISO 400 or so but not at ISO 1600, 2400, etc. - If you want 'sharp/sharp', use a monopod, learn to exhale and calmly press the shutter release to cause less camera motion, use an ISO of no higher than 400 or so, see what image size and sharpness options are available for picture taking, experiment, experiment, experiment. And, all lenses are sharper at certain focal lengths and aperture settings. Try to learn if your camera/lens has been reviewed by one of the better photo mags. They should have many of the answers specific to your camera/lens/aperture resolution/ISO image degradation/etc. in their tests.