Originally posted by metalfab There is an upcoming Renewing of Vows that a couple is having at a church. ...(snip)... it's going to take place during the regular Sunday service. ...(snip)... I have convinced the better half that I need a flash, ...(snip)
Before buying/using any flash for this one event (especially during regular Sunday service), make sure to ask both the couple and the church leader if flash is acceptable. Either may prefer not to have such a blatant distraction.
If the latter turns out to be the case, stay away from the longest focal length of that zoom (focal lengths less than the very max have faster apertures), kick the ISO up to the maximum, and invest in image noise removal software instead (applied gently). I prefer Neat Image (since it works just fine with or without a camera profile), but many report good results with Noise Ninja as well.
And, yes, I would use the zoom over the 50mm. The longer focal lengths will allow you to maintain some reasonable distance to avoid intruding on the event too much.
stewart