Adding a conversion lens to the front of the existing camera lens will not improve the light gathering ability of the camera lens.
I am wondering whether the low-light capability of Powershot A (15 mm dia lens) series would be improved by using the 52 mm telephoto/wideangle lenses (of good quality - with coatings etc- porbably original canon lens.) In theory,52 mm lens has atleast 9 times the area of the 15 mm lens. Hence would it improve the light gathering capability of the camera?
Has anyone experienced this? i.e. ability to use faster shutter speeds with 52 mm lens?