What is the wattage of your power supply? You may need a beefier one.

Rgrenader is onto something. It very well may be that the setting you changed to get it to work was under Custom Settings > Bracketing/Flash > Flash Sync Speed.
Setting it to Auto-FP enables High Speed Sync, this allows the camera to sync at shutter speeds over 1/250 (I've seen 1/320 too depending on camera model).

I have the #4 version for Nikon and use it mainly for astrophotography. I'm am quite pleased with it. It has the distortion you would expect from a wide angle lens but it is sharp to the corners. For landscapes the AE chip is nice to confirm focus.

This was taken with that lens. 5 landscape oriented photos stitched together.
http://www.uglyhedgehog.com/t-486197-1.html

Shooting weddings.

Yes or no. Can you honestly not see the difference?

Lens hoods protect from bumps. Not sand, dirt, people's fingers, the elements, etc.

If I only did photography in a studio, I wouldn't use a filter.

Normally I would ignore grammar police but his post went beyond a simple and polite correction.

In your first sentence, move the comma after the word "kept" to after the word "lose".
In your third sentence, use "that" instead of "which" since the noun is followed by a restrictive clause. Unless you learned British English, then you can have a pass for that one.
In your fourth sentence you need a space after the word "will". On second thought, there are so many grammatical errors in this sentence I would suggest deleting it and trying again.
In your final sentence, move the period inside the closing parenthesis. This is done when a sentence is started with an open parenthesis.
You would know all this if you paid attention in grammar school.

Losing photos is painful, no matter what size you decide on I would set SD slot 2 for backup RAW. I use 2x 64GB cards.

Here's another gem.

(Download)

Since you have Gmail you also have access to google photos. You can upload a photo at original size and share it with her.
As stated before, Dropbox is another way of doing the same thing.

-edit: needs to be done from a PC

I see your dilemma, I had the same one long ago. I had tried stacking filters and, as others have said, it would cause vignetting if shot too wide and ghosting or flares if there were bright areas or light sources in the frame.
For some situations where you're shooting long and there's no light sources in the frame, you can probably get away with stacking filters. I did this before but now I just swap them out. Sure it's a pain at times but double stacking filters causes issues more often than not. Eventually as my kit grew I keep CPL's on the lenses i use mostly for landscapes and quality UV filters for protection.
Even with 1 filter, given the right conditions it is possible they could cause flares or ghosting. I've seen it with sunrise / sunset shots, in those cases I remove the filter entirely. Most of the time, if it's a good UV filter, you wouldn't ever know it was on.

I shouldn't laugh but it is funny.

[quote=Charlie'smom][quote=papakatz45]So you are saying he never say this against his wife? You know not what you speak.[/quote

“First hand” means it happened to you personally. It happened to his wife, not him.[/quote]

Not quite accurate. If you witness something you have first hand knowledge of it and I believe that is what he meant. If his wife told him about it, it would then be considered second hand information.