The wedding went well and I'll try to post some pictures later. I shot the whole thing with my Tamron 28-75 f/2.8 on my 5D II because I didn't want to mess with two cameras at this point. The first thing I noticed is how dark everything was. I was shooting at ISO1600, 1/60-1/125 for virtually everything. Now I know why people recommend the Canon 24-70 f/2.8 for weddings. Although I love the 24-105 f/4, it would not have been fast enough - at least I'd have to use more flash.
My biggest problem was trying to decide when to use flash or not use flash, and adjusting the settings on the camera. I tried manual, then AV (for depth of field stuff), then TV (as they were coming up and down the aisle to get a 1/125 shutter speed) and even P when I didn't have the time or energy to think about all the settings. I can't decide which setting I like best.
Another thing I noticed is that I was having to increase the exposure (especially on "P) almost a full stop to get a "white" dress. Trying to take a picture of the bride in white, and then the groomsmen in black right after sometimes presented a challenge.
I also noticed that my flash was a little bright on some of the shots and it washed out people's faces a bit. Lightroom helps remedy this to some extent.
The Tamron 28-75 missed focus on many photos. I use the center focus and recompose method, usually focusing on the eyes. At f/2.8, only about 60% of the photos were tack sharp. I think I'm going to look at trading it in for the Canon 24-70 f/2.8. I might need to micro-adjust it for my 5DII as well as I loved the Tamron on my 30D. Not so much on the 5D II.
I took over 700 photos worth 20 gigs of raw photos (about 5 hours to download them all). The 5DII sure creates bigger files than the 30D
.
Anyway, got to go for now. Oh, and one last thing. My legs were aching at the end of the wedding. To much hard work for this 50 year old
.
Thanks for all the great advice from this forum!