M8 With Slow Speed/Metering Issue in Low Light

[furcafe]

My recently delivered M8 (firmware 1.09) is experiencing problems w/slow speeds & metering in low light (household incandescent & halogen).

E.g., w/the ISO set to 640 & the shutter speed set to A(uto), the meter reading in my living room @ f/1.4 = 1/30th sec., f/2 = 1/15th sec., & f/2.8 = 1/8th sec., which is all good. Continuing down to f/4 = 1/6th sec., still OK. The problem is that stopping down to f/5.6 also gives a reading of 1/6th sec. & stopping down further to f/8 provides a reading of 1/8th sec. & f/16 = 1/12th sec., the opposite of what should be happening. Test shots show that the camera uses the indicated shutter speeds (I get a black frame @ f/16), so this is not a display issue.

The problem occurs w/all of my M-mount lenses (none coded), when using manual exposure as well as auto, & @ all ISO's (the "floor" shutter speed simply changes, e.g., if I set the ISO to 2500 in the example above, the lowest shutter speed becomes 1/24th sec. rather than 1/6th). The problem also appears to be independent of any camera settings (white balance, compression, etc.).

Has anyone else experienced anything similar? I was under the impression that the M8's meter was as sensitive as the M7 & MP. Any theories as to why this is happening or is this just a straight up metering problem (to be dealt w/under warranty presumably)?

Thanks in advance,
Chris