use the little orange lamp that blink while timer count, I have no idea about coding but you give a command to the lamp to fire up while auto focusing, this feature is already available in some nikon's so I think it's easy to make, sorry for the bad English i hope you understand me well :)
(http://imageshack.com/a/img691/5182/60tu.jpg)
Pretty sure that little orange light would only be useful for very close subjects.
It will be useful even if it can help just 10% I hope it can be added
Thinking about it further, I doubt it would be useful at all.
That light has a large spread pattern. It is also lacking in power.
So, at close focus distances, the lens would block a significant proportion of the light, and it doesn't have enough power to create sufficient contrast for AF at longer focus distances.
Quote from: Karim on March 13, 2014, 12:06:06 AMthis feature is already available in some nikon's
... but Canon wants you to buy a flash to get a working af assist :-p so no can do transforming the self timer selfie indicator lamp to something working.
Quote from: Karim on March 13, 2014, 03:44:46 AM
if it can help just 10%
yeah it would probably help like 0.001% at best
if you have two cameras, take a picture with one while the light on the other one is on (and the cameras are in close proximity) and show us the difference it actually makes.