Sounds like a power supply issue. If no POST boot up messages, check it or have it checked. Also, make sure plug is firmly seated in wall receptacle. Don't laugh but I once had a similar problem from a dangling plug.

I remember that night well. I got home at about 2:00 AM and Mom was up watching it on the living room TV. I sat down with her and we watched it together. What an incredible accomplishment!

Copying any file to another location is a byte by byte (actually bit by bit) CPU "move" process. Unless something completely unforseen happens, like your drive crashes, the data at the two locations is identical. No compression, no losses.

Beautiful shot. The deep blue sky is stunning.

I haven't renamed my photo files in quite a while now, but I recall that Windows, going back to XP (I think), is able to batch rename files. You can do it from File Explorer for sure which is easy or probably from the command line using wildcards.

That's great. I have an old, beautiful Blaupunkt console radio from 1962 with AM, FM and shortwave bands. The FM even supports stereo hi-fi and the full, deep, wonderful sound that comes out of those vacuum tubes is even more pleasing than my top-of-the-line Yamaha system.

I also had to replace a tube about 20 years ago, which I was able to find at Radio Shack, but I've been fearful that if another tube went, I would just be out of luck. Glad to learn that probably won't be the case.

That's great. I have an old, beautiful Blaupunkt console radio from 1962 with AM, FM and shortwave bands. The FM even supports stereo hi-fi and the full, deep, wonderful sound that comes out of those vacuum tubes is even more pleasing than my top-of-the-line Yamaha system.

I also had to replace a tube about 20 years ago, which I was able to find at Radio Shack, but I've been fearful that if another tube went, I would just be out of luck. Glad to learn that probably won't be the case.

A reasonable quality air blowing tool will usually suffice to clean debris from your sensor, but if you have a particularly difficult speck of debris to remove, sometimes lens tissue wrapped around a Q-tip and very gently used will remove stubborn specks of "dirt."

In the old film days, the studio and magazine photographic "standard" was Kodachrome-25. It rendered the most accurate color, contrast and grain-free images available. I believe ISOs below 100 in modern DSLRs utilize a software algorithm for their implementation, but it wouldn't hurt to try examining comparative shots taken at 80, 64, or 50 (and 25 if available) to see if there is any visible image enhancement or deterioration with your specific camera. Of course, the lower the ISO setting, the longer your comparative shutter speed will be (at equivalent aperture), but you might find that to be quite useful in certain circumstances. I always stay at or around ISO 100 whenever possible, and go above ISO 400 (or 800 max) only when absolutely necessary.

With all the wildlife and other beautiful natural objects you will witness in RMNP, you shouldn't leave your wide to telephoto Sigma at home. I guarantee​ you will wish you had its long reach with you. It's an excellent lens as well. You will also use the CP quite a lot especially if you have beautiful sunny days. I'm not sure you will want to lug a tripod around, and there are improvisational ways to stabilize your camera if absolutely necessary. Have a great trip and show us your photos when you get back.

Just an FYI. I've experienced the fogging lens issue and it happens only to the front element. Actually, it only happens to the UV filter I always keep in place in front of the front element. I suppose the other internal lens elements are well enough sealed to keep out moisture as even the back element does not fog up.

To prevent fogging of goggles, skin divers use a little saliva on their glass. Get a standard UV filter out of your camera bag, spit on it and wipe it around. Attach "treated" UV filter to the front of your camera lens. It'll cost you nothing and it may even work.

There is another option you might want to try. There is product made by the Rain-X group to prevent fogging of mirrors, for instance in a bathroom after a shower. I can't recall its trade name but I'm sure you can find it on their web site.

I would apply it to a standard UV filter (both sides?) and screw that treated filter onto the front of your camera lens. Can't say for certain if it'll work in your situation, but the product does work very well in preventing condensation from forming in the house. It should do absolutely no harm to your lenses so I would give it a try.

Great images of the Chevy and Gulf station. Very nostalgic. I had forgotten about the ding but that made me chuckle. Thanks for the memory!

The color of the horse (roan?) is beautiful and warm, but for capturing only the quintessence of horse, I definitely prefer the B&W. Very nice.