According to the User Manual, the AE-L button should lock the exposure for twice the time set for the exposure metering even when the exposure is set be locked when focus is locked. There appears to be an intermittent problem with the use of the feature; sometimes it works, other times, it does not. If I press the AE-L button, the '*' light comes up in the viewfinder to indicate that exposure has been locked, BUT if I move the camera position, I can see the exposure changing which is apparent in shots taken in a panoramic sequence.
I've used this feature with my previous *istDS & K10 to create panoramic shots by stitching several consecutive shots together without any problems; however, the K5 does not always lock the exposure when AE-L is set.
Additionally, the WB on the K5 changes from shot to shot when using AWB - this does not happen on the *istDS or K10.
I have updated the firmware to v1.12 and reset back to the default parameters. Initial checks indoors at appeared OK but there was one instance where the ISO value changed whilst the AE-L button was pressed to lock the exposure.
I tried the camera out on two different days with differing light conditions taking in excess of 30 panoramic shots using sequences of images locked with AE-L with complete success.
I then changed the AE-L to lock the exposure while the focus is locked (page 121 of the User Manual - 'exposure can also be locked when focus is locked') and immediately experienced problems with AE-L not locking.
It appears that the only way that AE-L will lock the exposure is when AE-L is set NOT to be locked to Focus & NOT locked to focus point which is contrary to the information on page 121 of the User Manual.
Has any one else experienced this problem.
Last edited by WightWalker; 01-31-2012 at 12:12 PM.
Reason: Addition of images to illustrate problem