JaKing
Veteran Member
Some people here are utterly determined to question, belittle, deride and destroy everything Olympus does, by every possible means they can imagine ...
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What is Olympus Hiding ...?
- Thread starter Photostyle
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whumber
Senior Member
That is an incredibly telling interpretation of what was said.
JaKing
Veteran Member
WH, it is the only possible interpretation of more than ten years' behaviour by the same small group both here and on the FTs forum. Same old, same old.
whumber
Senior Member
If you think that's the "only possible interpretation"...wow, just wow.
Yes, it is magnetically levitated above the backplate: the springs act as dampeners to add necessary hysteresis into the system, as magnetic levitation offers very little inertial dampening of its own.
roberthd12
Senior Member
Whatever it is, it's about two years overdue. Gotta make some news––some big news, if you want to survive.
3dwag
Senior Member
Sorry, brain fart.
Yes, the third sensor axis is rotation about the Z-axis, and the sensor remains in the single focal plane.
If Panasonic’s new organic/global or whatever it is called sensor is near prime time then surely they would be happy to sell it to Olympus as well. If it is indeed as good as it seems to be that alone would make for some exciting new cameras.
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Tom Caldwell
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Yeah, I would still count it as "magnetic levitation" as long as it's magnetism that causes it to float above the backplate (even if there are springs holding the corners to act as a dampener and perhaps studs to act as stoppers). If however it remains in physical contact with the backplate/studs when powered on (and the magnetism is solely to displace the sensor in X/Y axis and serves no function in terms of it floating in Z-axis) then it doesn't count, but this contradicts with the Olympus statement too if this is the case.
Does anyone have a link to the patent filing to see if contradicts with this characterization of "magnetic levitation"? bobn2 mentioned low friction studs, which if no "levitation" is going on means that the sensor is basically held against those studs using the springs.
I found this one but it's a ball bearing based system (there are 3). It doesn't look like the one in the E-M5.
https://patents.google.com/patent/US9235061B2/
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Sergey_Green
Forum Pro
3dwag
Senior Member
Well, my EM1ii uses the full sensor frame width in 4K, no horizontal cropping. The video processor resamples the full frame width to 3840 (4K) or 4096 (C4K).
whumber
Senior Member
That's incorrect, there's a 1.2x (approx) crop in both 4K and C4K.
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"Full width" 4K means the full width of the sensor is used (no horizontal crop). It doesn't mean there is no vertical crop (there is still top/bottom crop to get 16:9).
The E-M1 II does offer full width 4K. It does not crop the left and right side. Same with E-M10 III (and E-PL9).
See "movie mode" section in Camera Labs review for the crop (they are the only reviewer I have seen that seems to test this regularly):
https://www.cameralabs.com/olympus-omd-em1-mark-ii-review/
https://www.cameralabs.com/olympus-omd-em10-mark-iii-review/
In contrast, my GX85 has around 1.1x horizontal crop (GX850 and G85 is similar). GX8 and GX9 is around 1.25x horizontal crop. G9, GH5/GH5S are the only ones that get full width 4K.
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whumber
Senior Member
Ah, it's the stabilization setting. There's a 1.2x crop in mode 1 and no crop in mode 2.
3dwag
Senior Member
Don’t know where you are getting that information. I’ve been shooting C4K 24p on my EM1ii for more than a year, and just now checked to be sure, and with both 4K formats there is no horizontal cropping compared to the 4:3 still image.
If you are just reading some review, it is possible that they are talking about a crop factor using the diagonal FoV, which will decrease slightly when switching from 4:3 to 16x9 if the horizontal FoV remains the same; you would need a multi-aspect ratio sensor to keep the diagonal FoV constant in that case.
whumber
Senior Member
It was the electronic image stabilization. I didn't even realize it was turned on; it crops in to 1.2x when it's enabled. Surprisingly the 4K actually seems a bit sharper with the stabilization on. I was kind of hoping the 1080P would have sharpened up a bit when I realized what was going on just now but alas it's still pretty soft compared to the GH5/G9.
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3dwag
Senior Member
I only use Mode 2, which has no digital stabilization, only mechanical/ optical. Just tried Mode 1 and you are correct for that mode — the overscan is necessary in both directions in order to do digital stabilization, but I’ve always seen artifacts with past cameras and have switched it off (Mode 2) since my EM5ii days.
3dwag
Senior Member
Hah, our replies crossed...
I have not done any comparison tests with Mode 1 vs Mode 2, but I recall reading in one EM1ii review a long time ago about the digital processing in Mode 1 enhancing the stabilization without adding artifacts.
I agree that 1080p is a bit soft. That’s the main reason I shoot 4K, as my final output is 1080p for Blu-ray etc., and that workflow gives me outstanding 1080p.
whumber
Senior Member
The stabilization is indeed better with Mode 1 but you do get some warpy artifacts from time to time. I'm hoping the E-M1ii successor has 1080P60 that's up to the standard of the GH5/G9. Sometimes it seems like the 1080P60 from those cameras is sharper than the 4K from most of my other devices. If it wasn't for that I probably wouldn't keep a panasonic body around, 4K60 is overkill for me and the regular C4K on the E-M1ii is more than enough.
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