Furbugsy wrote:
I have the Nikon 18-140 f3.5-5.6 And an 18-300 f3.5-5.6 for outside photos , but for inside the hall I like to get the 17-55 f2.8. I have a 50mm 1.8, but I may not have the room to move, and take a photo. I have a Nikon D7200 that I like very much. Your advice is needed and would appreciate very much. 😁
There is nothing wrong with either of your lenses, but it depends on what you are looking for as a result. If you are looking for shallow depth of field shots, then a faster lens used at or near wide open will give you that. But your DoF will likely be so shallow that group shots will be difficult because it will be hard to get everyone in focus - which means you'll have to use a smaller aperture, like F5.6 or F8. Then the only advantage of a very fast lens will be a brighter aperture for composing and focusing.
Your best bet is to get comfortable using a camera - mounted but bounced speedlight
This guy has excellent tutorials all over his blog that can help you:
https://neilvn.com/tangents/wedding-photography-tutorials/These are a few images at a wedding that I took in the manner described above. The key takeaway is to never point the speedlight at the subjects - bounce the light off a ceiling, a wall, or even a large woman in a white dress. You'll get softer, more flattering light.
The gear I used was a D700 with a Nikkor 24-70 F2.8. I used a manual speed light (old school, but I like the simplicity), a shutter speed of 1/250 to minimize ambient light and camera/subject movement, an ISO of 1600, which is a walk in the park for this camera, and apertures from F4.5 to F5.6.
Billnikon's advice is spot-on as well.
But if you really want to get a new lens, then get it. But I suggest you rent one first so that you full understand what you are getting and what it will do for you that your current gear, if correctly used, cannot do for you in this setting.
Another lens worth considering is the Sigma 18-35 F1.8 Art - it's really sharp, and has excellent performance when used wide open, and is about 1/2 the price of the Nikkor 17-55.
https://photographylife.com/reviews/sigma-18-35mm-f1-8.