I use the Tokina 11-16mm f/2.8 DX lens on my D7000 for my real estate shooting. I get great results and at f/2.8 it's considered by most to be fast, especially for a zoom lens. I picked up a used lens for $400 up here in the great northwest :D

The SB-600 Instruction Manual can be downloaded from here ---> https://support.nikonusa.com/app/answers/detail/a_id/13455/~/speedlight-sb-600-instruction-manual

See page 52 to set Wireless Remote Flash mode.
See page 61 to set channel and group.

I don't know if this will work with your master flash - the Phottix.

What do I think?
I think those are BEAUTIFUL images!!
Can you get better?
Amazing.

I have the old "Beast", an AF-S Nikkor 28-70 f/2.8D IF-ED, that I keep on my D7000 or D200 most of the time. I extend the zoom by walking forward or backward, whatever the need. It's a great general-purpose lens. It's not the only lens I have but it is definitly the most used.

Buddy is also a guitarist with not too bad a singing voice. He's certainly better than me.

Carnegie Hall ---> http://www.youtube.com/watch?v=BjFwcZQila8

The yellow "elephant fish" comes to us via PS.

http://viola.bz/elephant-fish-fake-and-real/

To continue the digression (sorry folks), I've lived here 28 years and have never done the whale watching thing.
What time of year will you be here?
You going out of Seattle, the WA coast or Oregon?

Well, I'm about as far north as you can get and still be called Bothell.
There's one more house and then you're in Everett. I'm between Lynnwood and Mill Creek. I'm a Bothellite in name only and happy to be so. Don't want anything to do with King County (Seattle). Mary Burke wouldn't have any trouble getting elected here with Seattle's constituency. But, I digress from our topic, sorry.

Hmmmm, yep, you're one of the smarter ones for sure.

I had my eye on the rough calculation and I calculated the number of 1/3 stops incorrectly. f/3.5 ---> f/1.8 is 2 stops. That would produce 1 1/3 stops difference.

Good catch. Thanks.

I think I got this all correct. Some of you smarter folks can step up if need be.

EV = log_2 (N^2 / t ) where:
log_2 is log base 2
N = f number
t = time

You find a log calculator here: http://logbase2.blogspot.com/2008/08/log-calculator.html

a) EV = Log_2(3.5^2 / 30) = -1.290415
b) EV = Log_2(1.8^2 / 20) = -2.625934

b is capturing more light, about 2/3 of a stop more.

If you want a short, rough estimate, you could do this (numbers rounded):
3.5 ---> 1.8 = 1 1/3 stops
30" ---> 20" = -2/3 stop
Difference = 2/3 stop

If you're using Time Machine you may find a problem. The Time Machine problems are various. Just DuckDuckGo/Bing/Google for solutions. The first post I tried fixed my problem.

I am always looking to better understand other's thinking on this subject Steve has introduced - "Does God exist?"

Steve, what is your rationale (or presuppositions or beliefs) for the above statement?

Jon

In this context "somebody's" is a contraction of "somebody is."
To read it as a possessive would be incorrect.

As to "who cares?", apparently you do. You commented "there's just no excuse." In this context that conveys to me an expectation of a greater knowledge of english and its use than is expected from someone in another profession or vocation.

However, my reply to your first post was not intended to attack you. It was merely meant to point out that most of us do make mistakes. I thought it ironic that you, commenting on mistakes, made one yourself.

Case in point - somebodies ==> somebody's