A couple of them, like strong backlighting and sidelighting, are compensated more, I believe, if the subject in focus is at a middle distance as opposed to a far distance. I think it compensates more for a person at portrait distance against a bright background than it would for a landscape shot with a bright background, for example.
There may be other situations in which focus distance is taken into consideration, as well.
I suppose that with an A lens, the multisegment metering works, but without some of that extra information about focus distance that could influence the camera's metering of some shots.
Joe
Hi Thomas,
I haven't noticed the multisegment reading to adjust with the focus distance. As for the flash, perhaps the P-TTL mode may consider the distance but it's not likely for the older plain TTL flash mode. For instance, the displayed range by the flash unit does not change with the distance.
As far as I know, the distance info is only used by cameras bundled with smart modes in order to correctly select the landscape, portrait or macro mode.
Servus, Alin
Thomas wrote:
TS> Isn't it true that the FA lenses also communicate the distance to the TS> body, so that better evaluation of the matrix metering can be done? TS> Doesn't this also apply to flash modes?
