I replied to your other post of some time ago where you asked about shooting in church.
As I said back then, I shoot a couple of hundred shots every Sunday, and now that we are in double services, it is an even higher count and I have been doing it for several years now.
I stand by my original recommendation that a zoom is indispensable in this kind of work. Depending only slightly upon your final output (print or web), and more upon the lighting in your venue, you may not need a super fast prime lens at all. In fact, I find fast primes in my scenario pretty limiting. I shoot a 7D and in the sanctuary I shoot at 1600 ISO. No flash, of course. I use two zooms and alternate them due to changing lighting conditions between the morning services and the night service. In the AM services I use the Tamron 28-300 3.5-6.3. The AM service is brighter due to large windows and daylight they add to the overall light mix (Ya gotta love raw files!). I shoot raw+ and shoot in S mode @ 1/40sec. Occasionally, I can get to 1/50sec. This results in apertures between f/4.0 (when @ 28mm for choir or congregation) and f/6.3 at the 300mm end when isolating a great expression from an individual (or baby) in the congregation or around 200mm to isolate the speaker, song leader, etc. About once a month or so, I pull back to one side of the platform (behind the pianist, who provides a good foreground) and rack it to 28mm and take two shots of the congregation @ 1/50 and f/5.0 and then make a pano showing the entire congregation/church. I must have a super zoom for my church work and the 7D w/AS is tailor made for the job because ISO 1600 is very smooth on my particular camera and I can cover an individual at the back of the sanctuary @300mm and a moment later cover an entire row @ 28mm as they break out in laughter together and it's all done at both ends of the zoom and I rarely move from my seat in the front row, right center aisle.
For the evening service I use a Sigma 28-105 f/2.8-f/4.0. This gains me another stop and more over my morning zoom and I need it because I now have lost my additional daylight. I have shot @ 3200 and it works okay too, but I am fastidious in my PP of 3200 and most of my stuff is for the web and it works, but my comfort zone is 1600 for my church work. After services, I step out into the foyer, go to 800 ISO and flip the built-in flash up in TTL, go to manual camera exposure @ 1/40 and f/4.5 and I get the whole foyer lit (fluorescent lights) due to the 1/40 shutter and the people I shoot pretty much fill the frame and they are roughly 8' - 20' from the camera. These settings are locked into a memory and I simply flip from memory 1 (sanctuary) to memory 2 for the foyer as I am moving into the foyer and all is good to go.
If you decide to go with a fast prime or two, I don't envy you and the angst you will endure when you aren't quite wide enough or you aren't quite long enough and you have to either start moving around (that's not a good thing...) or compromise by working your images over to try and make those primes work in a very fluid situation. Neither of those two scenarios is at all appealing to me because my 28-300 just does it all, almost as tho it was made just for getting complete coverage in my church scenario.
Anyway, that's my recommendation, based on several years of church shooting in different churches. YMMV, simply because your church lighting may be entirely different than what I experience. Use raw, a decent wide to tele zoom and DON'T be afraid to use 1600 ISO!
Regards, Jim
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