Olympus issued a new firmware update for the 12-40mm PRO lens. It improves the aperture stability when shooting videos.
Olympus issued a new firmware update for the 12-40mm PRO lens. It improves the aperture stability when shooting videos.
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10 Responses
That sounds great since I’ve started working with video using this lens and the Panasonic GH4. Any improvement is useful, even though I haven’t noticed a problem yet.
Hey – Short question: How well is the (manual) focus by wire of the 12-40 working on the GH4?
Is it follow focus compatible? (Just used it in a local shop on a E-M10 once.)
It has manual clutch focus too…. Just pull focus ring back and you physically move the focus groups from infinity to closest focus. So focus-by-wire isn’t needed.
Even when the focus ring is pulled back its still not mechanically linked; all MFT AF lens are focus-by-wire.
It is mechanically linked, check even the design, it has gears that the pull back locks for focus.
That’s why movie makers like it because you can do correct focus pulling or use rigs to offer it.
I have not noticed a difference between how it works on the GH4 or E-M1. It is very accurate on both and seems to be what anyone would expect. It doesn’t seem to work like Four-Thirds lenses where you can focus at different speeds–it seems linear only.
Thx for the information.
That fact is quite important to know …
(As the non linear non repeatable focus of
the Panasonic lenses is quite annoying to pull focus with ^^).
THX!
The Olympus Pro line objectives has the mechanical clutch mode where you pull the focus ring back and it is mechanically limited focus and focus drive follows exactly the focus ring movement linearly. But when you push the focus ring forward, you get fly-by-wire focusing, meaning the photographer operation speed and rotation controls the focus servos speed and distance non-linearly (fast rotation = longer focus change, slower rotation is slower focus change).
With focus ring pulled back its like any old-school manual objective and you have very hard time to pull focus ring faster than the focus servos can move the focus groups.
Ps The “Fly-By-Wire” system means that there is a system between the controls and the controlled system that dampens or exaggerates commands from controls depending controls speed.
If there isn’t such system it isn’t a “Fly-by-Wire” by nature, even when there isn’t direct connection between controls and controlled system.
pps. That is the difference in fighters (first one was in “Sotka”) and the definition follows that, so while there can be computer or hydraulics between controls (focus ring) and controlled system (focus servos) it doesn’t mean its “Fly-by-wire” by default.
Now if only Panasonic would bother to fix the problem (which is much worse) on their 12-35. Panasonic’s video features in the bodies are great, but they do NOT have the lens situation under control.
Has anyone installed this on their GH4? I formatted my SD card in my camera. I placed the card in my reader and copied OL101911.BIN to it. I put the card back in my camera, turned the camera on, pressed play and then … nothing. I have the latest GH4 body firmware (v 2.1 26 Jan) installed