AF Lighting

[rookie]

Many reviews talk about camera's as having "low AF lighting" as a negative on the camera. What is meant by "low AF lighting"? I assume that AF stands for Auto Focus. How does low lighting factor in here?

[Nick]

If it's a wee-bit too dark, the auto-focus struggles, and doesn't do so well. Some cameras like the Sony 717/828 have a hologram assist fuction which projects a laser pattern onto the subject being photographed to help AF.