Ricoh PENTAX K-3 Mark III Faq page 9

Fixed Time When the Shutter Speed Is Longer than the Interval Set in [Interval]
Release
On Some shutter releases are skipped.
Example) When [Interval] is set to 2 seconds, and the shutter speed is set t
o 3seconds: The first exposure has not yet finished at the time the second
exposure is supposed to be started (2 seconds after shooting has started), a
nd so the second image is not taken. (Shooting ends before the images spe
cified in [Number of Shots] are taken.)
Off No shutter releases are skipped.
Example) When [Interval] is set to 2 seconds, and the shutter speed is set t
o 3seconds: The second exposure does not start even 2 seconds after shoo
ting has started and starts after the first exposure finishes. (Shooting ends af
ter the images specified in [Number of Shots] are taken.)
When [Fixed Time Release] is set to [On], [Minimum] is not available for [Interval]. If [Inter

val] is set to [Minimum], the setting changes to [1 sec.].
- 9 -