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GX7 and Panasonic 14-140 3.5-5.6.

Started Mar 17, 2015 | Discussions thread
Voldenuit
Voldenuit Senior Member • Posts: 1,648
Re: GX7 and Panasonic 14-140 3.5-5.6.
1

alcelc wrote:

trog100 wrote:

its very easy to see if you run the right test looking for it.. i saw it before i knew what it was.. now i know exactly what it is.. exactly how to reproduce it and exactly how to avoid it..

everyone gets the odd blurry or soft shot.. it gets blamed on missed focus user induced blur or just one those things or just a poor lens.. more often than not its shutter shock or camera induced motion blur..

take one GX7 body.. one 14-140 lens.. put the two together and set the shutter speed at 1/160th of second.. pick a focal length you can be sure of holding the camera steady at.. take a few shots of something with detail in it..

then do the same thing using the electronic shutter.. compare the difference..

if you cant see it get some new glasses or a new monitor..

i see it and i can repeat it every single time.. and with more than one body lens combination..

http://www.cavecom.com/screwdriver/forum/showthread.php?t=21372

trog

Dear Trog, I don't have GX7 for that test. However, since early report on SS, it would just cause a soft image but not a blur one. Because the very slight vibration generated by shutter movement would never be hard enough to shake camera as normal handshake would do.

Shutter shock example from GF1 and 45-175X. Some lost detail in fur, blurry eyes and almost a double shadow on rocks. Shot stabilized on a rocky ledge, so not camera shake (I have a whole series taken around the same time with similar visual artefacts).

The visual effect of shutter shock depends on the illumination level and contrast of the object(s) in the frame. Objects with extreme illumination levels (either very high or very low) and/or high contrast are more likely to form double images.

In subjects with lower contrast levels, you're more likely to see a soft image or lost detail (1:1 center crop example follows):

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Panasonic Lumix DMC-GX7 Panasonic Lumix G Vario 7-14mm F4 ASPH Panasonic Lumix G 20mm F1.7 ASPH Panasonic Leica DG Macro-Elmarit 45mm F2.8 ASPH OIS Panasonic Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH OIS +4 more
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