Originally posted by atnbirdie I'm a new owner of the K100D so am still learning as quickly as I can. I would be interested in hearing what folks see as the advantages & disadvantages of fixing the exposure when focus is locked (AE-L with AF locked setting) and linking AE-L and AF so exposure is set with the AF (Link AF point and AE). I understand the latter applies to multisegment metering only.
Thanks for any thoughts you may have to offer.
SB
The "link AF to AE" function only affects the multi-segment metering. I suggest this should be only enabled when one used auto multi-point AF and does not recompose. By enable this function, the camera will put more weighs on the metering segment that are in focus as measured by the AF point(s).
The "link AE-L to AF" functions means that everytime the focus is achieved by the AF system, the AE value will be locked altogether. I enable this function by default now as I use central single point AF only. And for CW and spot metering used, I need to lock the AE anyway except in M mode. Even for evalutive metering, Pentax actually puts much weight in the central (spot) metering cell indeed, so it would be no harm to lock to the centre, again.
Just in case if you do not want to lock AE with the framing when you do the AF, press the AE-L for what you want to meter before hand, do the AF and then recompose.