Firmware Version 1.10 for K10D
The following function has been added in version 1.10
① Wireless control of external flash through built-in flash.
How to set
・Press Fn button and four way controller key ( )
・Flash mode selecting screen display
・Select Wireless mode
・ Flash discharge method can select by [ Flash in Wireless Mode] in the custom menu
１ ON Built in flash works with master
discharge
２ OFF Built in flash works with controller
discharge
・ HS（High speed sync）in not available
・ Select SLAVE 1 in Wireless slave mode when use
AF540FGZ or AF360FGZ
How to use: Same as using two external flash, refer to the operating manual
② Instantly return to centre AF point by one push of button in AF select mode.
[Center of AF Point] is added to the AF function
In the custom menu
When AF point switching dial set to ?SELECT?,
AF point is set to Center
③ Possible to change ISO setting by dial at TV/AV mode.
④ ISO setting change by dial while the ISO setting is being displayed on the LCD by pushing OK button.
・ ISO setting is being displayed in the view finder and on the LCD panel when setting the P/Tv
Av/M/B/X mode and then ISO can change by turning e-dial.
・ Possible to change to AF ISO by pressing green button in P/Tv/Av mode.
⑤ Green button function in M mode is available at TAv mode (Hyper manual).
・ Tv/Av value can set automatically when press green
button in TAv mode.
With this change, the name of [Green button in M] change
to [Green button in TAv & M] in the custom function
⑥ AV and TV switch by dial at P mode.
The item No.2 is added to the [e-dial in Program] in Custom menu.
With this change, Av can change by front dial and Tv can change by rear dial.
⑦ Instant return to the default value by green button at strobe light compensation.
PENTAX Corporation
was spielt das für eine Rolle.
.
))) it is very nice to change iso so easy in Av mode 
