The K-1 Mark II's card slot accepts two SD memory cards, with a choice of three data filing modes: "Serial" to store a large volume of data successively from one card to another; "Duplicate" (simultaneous filing) for simplified data backup, and "RAW/JPEG Division" to separate data files based on the recording format. It is also possible to copy an image stored on one card to another.
This Battery Grip D-BG6 is very convenient (I would say indispensable) when using a camera with heavy lenses, for example: PENTAX DFA 70-200mm F/2.8 ED DC, PENTAX DFA★85mmF/1.4ED SDM, ... . With the D-BG6, you can photograph for a long time without straining your wrists, such as a fashion show on the catwalk, vertical-oriented portraits, and the like.
I know everyone talks shit about Pentax, but this battery grip is brilliant!
Pentax think about everything (except video)
Then they are talking shit themselves. This is high quality stuff. Leave it to Canon to cater for the budget market.
Does the grip add a second card slot to the camera or, just store a spare SD card?
only a spare SD-card is kept
The camera already has two slots though.
The K-1 Mark II's card slot accepts two SD memory cards, with a choice of three data filing modes: "Serial" to store a large volume of data successively from one card to another; "Duplicate" (simultaneous filing) for simplified data backup, and "RAW/JPEG Division" to separate data files based on the recording format. It is also possible to copy an image stored on one card to another.
So what about using it?
This Battery Grip D-BG6 is very convenient (I would say indispensable) when using a camera with heavy lenses, for example: PENTAX DFA 70-200mm F/2.8 ED DC, PENTAX DFA★85mmF/1.4ED SDM, ... . With the D-BG6, you can photograph for a long time without straining your wrists, such as a fashion show on the catwalk, vertical-oriented portraits, and the like.
Can you use two rechargeable batteries at the same time? One in the grip and one in the camera?
Yes, you can use two rechargeable batteries
us.ricoh-imaging.com/product/rechargeable-li-ion-battery-d-li90-e/