The one that gets you the shot you want!

Ummm - I wonder if my fourth line is the same as yours? I guess we MUST have our browsers and text set the same as you!

BTW, your earlier snapshot shows multiple catalogs even some version 5 ones. Have you tried to open them all from V5? I assume you still have that Version installed.

As I said, a user issue...Assuming all your files are in the 6 catalog, you can Export them as DNG files. Then import them in the old catalog. This will write XMP data to the DNG file and get rid of the sidecar files. Do a Command A, then a Command S from the root picture directory first.

CAUTION--Backup, backup, and backup prior to doing this.

Stop and take a breath here, this is Five 9's a user issue, so we need to figure out what you did to cause this issue, so you understand and don't do it again.

LR Rule #1. Never, and I mean NEVER move, rename any photos outside of Lightroom. Doing so will cause the issue you are reporting. But I see a few issues here. You say you can't find a catalog, but in your screen shot, there is a .lrcat file. This is your catalog, it is a few up from what you have highlighted. Your Preview file is what you have your cursor on. Second there is a lock in place on your database (lrcat) file. So either you took the screen shot while your catalog is open, or you have a catalog issue. Close LR, go to that directory and if you still have a .lock file, you will need to delete it before opening LR again

Now, When you say your Catalog has no data, do you mean there are question marks by your photos in the Library Module? This would mean your catalog opens but LR Cannon find your photos. Show a snapshot of your Library module where your photos are supposed to be. Like the example I provided.

Yes, if you have a Time Machine, or are backing up your catalog with LR we can probably recover from there, but you need to understand what you as a user did to cause this so it does not happen again.

Do the two things asked for, and we can take it from there.
1. Screen shot of your Library Module. On a MAC (Shift+Command+4), and drag around the area to take a snapshot of.
2. Remove the .lock file if it exists while the catalog is closed (After shutting down LR)

The first time you plug it into your MAC, it should ask if you want to use this for a Time Machine backup. Just answer yes, and you can select any or all files to backup.

Agree with what others have said, it might also help to look at your histogram after the first shot to see if you were in the ballpark. If you had looked, you would have known to adjust. Theres the old saying of "Shoot to the Right". But if you're blowing things out your too far right.

If I set the ISO, it's the right ISO. I don't set the wrong ISO!

Correct, in reality the only time I change ISO on the fly is when I'm shooting Star Trails at night. I will then change on the fly, depending on the time of the year I bump up ISO 1/3 stop every 10 minutes or so until I get where I to my max acceptable. Guess what with my CamRanger I don't even need to stop shooting to do it, it's done on the fly and no shots are missed.

No, you asked how many I missed because I needed to change ISO!

Zero, I don't change ISO in the middle of shooting. Thats the point, I set an iso that works for the lighting I have. This is kind of like asking "How many shots did you mis because you had to change shutter speed"

Not rigid at all. I'm a photographer who started in film, what would you do if you did not have Auto-ISO. It's not needed. But if you feel you do want it good for you. If a photographer learns to do things without using auto anything, they will be able to create any shot. If they allow the camera to make decisions they are diminished as a photographer (thats my opinion). Arguing with it does not change my opinion

I hear people here say they need it because a car is moving in and out of shadows, birds are flying. yet I have seen others take and I have also made great shots like this on film. If you think changing ISO takes time, how long does it take to change a roll of film.

It's just an opinion nothing more, but when people say they need it for these reasons. That's just not true, they may want it for those reasons. It may mean it's less work for them not to have to learn to read a scene and pick an ISO that will work for that scene.

A reasonable compromise might be to set a range that it won't go beyond, like limiting max ISO to 800.

Yes I am very helpful as I have been to tons of photographers in the past. If you want to act like someones mother and hold their hands, more power to you. When someone says they are computer illiterate, or ask questions like "How do I move files from my camera card to my computer?" they need to get computer literate very quickly. They need to be in a computer class prior to any photography class. These are BASIC OS functions.

I have taught both photography and computer skills even into programming languages. A person will NEVER be successful with their photography hobby or profession if they claim to be "computer illiterate" Or can't figure out how to move files in an OS, or from a camera to a computer. Or how to perform basic edits. They will be forever frustrated.

People like you that cannot come up with or articulate a reasonable argument like to start throwing around names. I understand this typically points to one of dim wit

If you think telling people the truth is what did you call it "Bompas" too bad, I don't really give a crap. If you can't operate a computer you can't be a digital photographer period. Unless you spend a lot of money to have someone operate it for you.

I'm sorry but if you can't understand this then you're just a sumb dhit! To use your words.

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