Awaiting delivery of my new camera I did some searches and saw dust on the sensor can be a big issue with this camera- is it true what some on the Pentax forums claim, that the sensor cleaning "shake" on models like the K-30 and K-50 is not on the same level as that on the K-3 or K-5? I guess I'll just buy a sensor cleaning kit from B&H but I've never cleaned a sensor before and am rather nervous about it. Google "Pentax K-50 dust problems" and you'll see some of the same posts I saw.
Second thing is I purchased a set of 16 new Panasonic Gen 5 Eneloops batteries, do NiMH rechargeable batteries work well with this camera? They recharge up to 2100 times so I'm hoping they last longer than Li Ions. The camera uses only 4 of them with the battery adapter and I'm wondering how long the batteries will last before I have to recharge them.
These are the batteries.
http://www.bhphotovideo.com/c/product/1047691-REG/panasonic_bk_3mcca16ba_eneloop_aa_16_pack_2100.html
2000 MaH- 1.2V so four of them would add up to 4.8V- how long can the camera last on these, especially using a lot of Live View AF? In the manual Pentax says the camera lasts longer with AA than Li Ion, but I suspect they might be talking about lithium AA not NiMH rechargeables.
The stock Li Ion battery for the camera is 7.4V 1050 MaH.
http://www.bhphotovideo.com/c/product/757445-REG/Pentax_39066_Rechargeable_Li_Ion_Battery_D_L109.html
Third thing is a question about AF in Live View- how good is it? I know the LCD is immovable but I'll probably be using Live View AF quite a bit during low light shooting of constellations and night time landscapes and I'm wondering how good it is and how much detail the LCD can show when the light levels are very low (in terms of landscapes, stars, etc.)?