tomohdi wrote in post #16850250
Most if time my shot has noise .if you believe 24-70 will help me please help me to choose one of these lenses: Canon 24-70mm Mark II no VC or Tamron 24-70mm with VC.
I assume that like any other person who takes photos in low or any light, the light is not always the same. So this means you use various ISOs and shutter speeds. Putting the blurrier background (at same FL) you'd get with the f/2.8 lens aside, I would consider it like this:
The f/2.8 (when used @ f/2.8) would allow you one stop lower ISO for same shutter speed. Is this one stop significant for you?
But at what shutter speed? e.g. if this is 1/30 at 40mm, then without IS it could be an issue for you (or not), so you might sometimes have to raise ISO back to compensate.
If you are taking a photo of a few people then sometones f/4 with IS can be better than f/2.8 without IS (depending on the situation).
If noise is an issue for you, in a situation whre you don't get motion or camera movement blur using e.g. 70mm, f/4, ISO 1600, 1/20 with IS, you'd need 70mm, f/2.8, ISO 800, 1/20 but without IS. This could be a problem so you'd need to raise ISO significantly, which defeats the whole point.
If you (almost) never get to shutter speeds one stop slower than where IS is helpful to you, then the f/2.8 lens could help you with noise, as long as there's no other reason you might want to use f/4.
These are all examples and things to consider for how and what you want to take photos of. The same for whether any lens is good or not. People will comment on how it works for them, but it can vary.