|
Forum: Pentax DSLR Discussion
12-08-2010, 06:52 AM
|
| |
Wow! amazing study.
Assuming that a massive tripod cannot be always used:
I guess K-x shutter should be similar as K-7. So there is some blur inherent to the heavier and faster shutter that cannot be avoided.
I'm not shure if the second (and seems to be the most important) factor: "unstable image sensor position controller or equivalent non-linear effect triggered by body acceleration" could be somehow improved (firmware update?)
My theory of the battery quality could be consistent with this second cause. Good batteries might reduce this effect in a certain extent?
|
|
Forum: Pentax DSLR Discussion
12-06-2010, 01:51 PM
|
| |
Hi everybody,
I've made a quick test and, altought it must be corroborated by some extensive testing, I think that the blurry images are somehow related with the battery quality:
Equipment:
K-x with Tamron AF 18-250 DiII
Settings:
18mm f3.5 1/125s
Factors:
Camera Orientation (Hrz / Vert)
Battery (almost emptied SONY NiMh 2500 mA 1.2V / full charged SANYO eneloop NiMh 2000 mA 1.2V)
SR mode (On / Off)
Test 1
almost emptied SONY 2500 mA
Horizontal
SR On
19 shoots
68% good
32% normal (tiny shadows)
Good Sample (100% crop)
Normal Sample (100% crop)
Test 2
Full charged SANYO eneloop 2000 mA
Horizontal
SR On
28 shoots
18% good
64% normal
11% poor
7% very poor
Good Sample (100% crop)
Normal Sample (100% crop)
Poor Sample (100% crop)
Very Poor Sample (100% crop)
Test 3
Full charged SANYO eneloop 2000 mA
Vertical
SR On
20 shoots
100% normal
Normal Sample (100% crop)
Test 4
Full charged SANYO eneloop 2000 mA
Horizontal
SR Off
54 shoots
66% normal
33% normal-poor
Normal Sample (100% crop)
Normal-Poor Sample (100% crop)
Seems that SR system make the results worse, but my thought is that pictures taken with the SONY batteries are much better than with the SANYO ones.
|
