Originally posted by Tangent88 I don't think it's clear yet whether the K-70 has the aperture problem or not.
You yourself
wrote recently
that there have been reports of failure so why do you question your own "thinking" 4 days later?
I know of reports in the German
Pentaxians forum where 4 cases were reported
And I know personally the case of one person whose K70 had failed after replacement of the solenoid for a second time.
Originally posted by Tangent88 Also DxO disagrees with you about the K-30 being better than the K-5 in low light.
I don't care much about what the holy DxO says.
But I am now not going into a DxO sense and sensibility discussion but leave it just with those few comments:
DxO tests cameras by counting lines and checking noice. The result of this were Sony sensors because they are made to meet DxO requirements, are aligned to those requirements and are "denoised" (??? don't know the correct English name for this) and so seem particular sharp.
Those very fine shades which can be found with the leaves of a tree cannot be measured (but seen) and that's why for some the old CCD Sensor was better, more natural. Allthough more noice, there are more shades of greys and this more analogue way a photo looks like. For similar reasons some love the Foveon-Sensor of the Sigma DLSRs.
I own the K10D, K5, K5II, K5IIs, K3, KP and K30 and a K50 is nearby.
I have worked with all and particularely in low light because I dislike flash.
I like the K5 very much, but the step towards the K5II was immense, particularely in low light!
You cannot just compare processors. The processor is processing but not more. This is after the sensor (and AF) captured the subject of desire.
The AF sensitivity and SAVOX is what counts for low light prior processing what has been captured:
K5 - Savox IXi+ (9): 1 - 21.5
K5II- Savox X (10): -3 - 18
K50- Savox IVi+ (9): 1 - 22
So you see, the low light AF abilities of the K5 and K50 are similar concerning AF and SAVOX, but the K50 has higher ISO and its processor is a bit more modern, which actually is exactly what you wrote in the same post, just that you bring the K5, K5II and K5IIs into the same league because of their same processor. Which is true, but they don't share the same SAFOX!
If I recall it right it was the K3 which got those particular 2,8 sensitive sensors in the center.
But what can weigh is the quality of the antishake which I find better with the K5. So taking shots handheld can make a difference in favour of the K5,
but this is a different story.
A particular difficulty of the K5 was AF in lowlight + tungsten light. I have to dial in a -10 when taking photos with the K5 with tungsten-light so a mighty front focus. This was not solved by firmware updates.
But I use my K5 differently now.
By the way, when Pentax brougth out the K30, they advertised particular with it having improved low light (coloured low light if I recall it rightly) and improved AF against the K5.
So which of the K5's do you own?