I am a canon user with 6D and 1D Mark IV.
I am tasked to take a group photos of around 150 paxs from a distance but is afraid that my current lens of 24-70 is not wide enough on the actual day and there may not be enough room for me or the subjects to move back.
Which wide angle lens is suitable for this task? I don't need a fast len, something with F4 or higher is sufficient.
Minimum distortion at the sides preferred.
It can be canon or 3rd party lens such as Tamron