Pentax X90 Operating Manual page 24

* For 4, M appears if the shutter release button is pressed halfway
when [Shake Reduction] in the [A Rec. Mode] menu is set to O (On).
l appears when [Shake Reduction] is set to P (Off).
* 5 and 6 always appear when the shooting mode is set to e, b, c,
a, or E. In other shooting modes, they are displayed only when the
shutter release button is pressed halfway.
* 10 differs depending on the communication status when using an SD
Memory Card with a built-in wireless LAN (Eye-Fi card).
(No indicator)
M N
M O
M P
M Q
* Some indications may not appear depending on the shooting mode.
Histogram + Info/Grid Display/No Info Display in Still Picture
Capture Mode
A1 to A18 and B1 appear when "Histogram + Info" is selected. Only B1
appears when "Grid Display" or "No Info" is selected.
22
Eye-Fi card is not supported
Communicating data
Waiting for communication
Eye-Fi communication is not allowed
Version is outdated
A5 A6 A7
A1
A2
A3
B1
A4
B2 1/250 1/250 1/250
B3 F3.5 F3.5 F3.5
+1.0 +1.0 +1.0
A19
A8 A9 A10
38 38 38
12
M
200 200 200
A20
A11
A12
A13
A14
A15
A16
A17
A18