More like when folks have IBIS, they appreciate that it provides a benefit to the dozens of lenses without OIS that they already own and that already exist, and a solution like that in the GH5 also benefits by working with OIS in native lenses for even better stabilization so they also still want lenses with OIS. But we've already been through this bad argument of yours multiple times on this board.
GH4 (GH5) Is the V-log without external recorder issue gone in GH5?
- Thread starter CustomerGH4
- Start date
More like when folks have IBIS, they appreciate that it provides a benefit to the dozens of lenses without OIS that they already own and that already exist, and a solution like that in the GH5 also benefits by working with OIS in native lenses for even better stabilization so they also still want lenses with OIS. But we've already been through this bad argument of yours multiple times on this board.
stoneinapond
Veteran
Sounds like someone has an agenda. :bath:
joe12south
Veteran
I feel like people confuse IBIS with electronic stabilization. IBIS *is* a physical correction in the optical path, just like OIS.
Not just like. IBIS can 'warp' the footage, making it look 'wattery' in the same way Warp Stabilizer can.
OIS doesn't do that.
iain.bason
Well-known member
What is it about OIS that avoids that "warping"?
Can you link to any footage to demonstrate this claim? My understanding is that IBIS shifts the entire sensor to stabilize the image, much as OIS shifts entire lens elements. By contrast, Warp Stabilizer uses digital signal processing to align specific visual reference points across multiple frames of a recording, and geometrically morphs surrounding pixels to smooth over the warped discrepancies.
joe12south
Veteran
This.
ozmorphasis
Well-known member
Perhaps you are confusing Ibis with Ibis+E-Stablization? The latter can warp since it is...warping to get its results.
I agree. The E-Stablization causes warping. But the IBIS a beautiful thing. I can hand hold a legacy Nikon 85mm and it's rock solid.
Zak Forsman
Major Contributor
The cyan/magenta blocking that prompted me to sell my GH4 was present in this pre-release GH5 clip, which is why I'm holding off until I get around to renting one first.
https://vimeo.com/201425168
Technically IBIS shouldn't create any distortion or warping, but IBIS combined with rolling shutter from the sensor quickly moving to compensate camera movement will cause some distortion/warping.
Here's a video showing some of the distortion on the Panasonic GX85 and the Olympus Pen-F (Both have IBIS).
ozmorphasis
Well-known member
Absolutely, I have been getting quick B-roll shots with clients' videos using much longer focal lengths than what I would dare normally. It's been great, because I don't have to get so close for closeups, and I can enjoy more compression when I want the background to stay tighter. The only thing is that since I'm using adapted zooms in these cases, adjusting the Ibis focal length is a bit tedious and slow. It would be great if that could be assigned to a dial like shutter speed rather than the current menu implementation.
But really, it's such HUGE step up on a very practical level from my GH4 that none of what I just wrote should be construed as a complaint.
visceralpsyche
Well-known member
IBIS warping seems to occur mostly on wider angles, say between 18-25mm on a Speed Booster. Beyond that it works really well I think, so it's just something to be aware of as a wide angle limitation.
Cheers,
Paul
Cheers,
Paul