Expanded ISO
I assume this is something to do with the reason it is not default.
There has been much debate over time about getting the full dynamic range at which low setting. Actual tests here link
Personally i find with my K5 ISO 200 gives a superb real world range unlike many compact cameras. I use low for shadow correction. I guess none of this applies to RAW images.
K-1Gripped K-1 ungripped K-5ii K7 Various lenses
Stuart..
My Guides to the Pentax Digital Camera Flash Lighting System : Download here from the PentaxForums Homepage Article .... link
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver
Regards David
davidrobinson
Plus Member
davidrobinson
Is there a disadvantage and if not why not keep it set to Expanded Sensitivity then its there when and if you need it.