FS7 with Metabones

Erik,
When Nikon lenses are used on another mount, the adapter grabs the iris ring mechanically not electronically like with the EF lenses. Thus a Nikon G to EMt or FZ ( F3 , F5 etc) has a ring ro a a little handle that will open and close the iris without any stops. The downside is you don't get any read-out of where the iris is unless you get say the $1000 Prolock adapter for FZ from Optitk. That has a a readout on the side of the adapter ( not electronic) that tells you what the f stop is.
Nice to just smoothly adjust though. It will be hard to adjust to steppy irises again.

2 more question about the Sigma 24-105:
- Same question, 1/6 or 1/3 step increments with metabones adapters - speedbooster or normal?
- Repeatable focus marks possible?

Thanks
 
I didn't not have the Sigma on my camera yet.

But as the most lenses, even the old Tokina ones, have 1/6 step increments on my speedbooster and on my smart adapter
the Sigma should work the same.

I wait for the FS7 to arrive first and then I'll look for lens solutions. Maybe there's already new alternatives...

Focus is repeatable but only 90 dregrees of focus throw, like most AF lenses...
 
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I'd say get both, and use as needed. Most of the time i'm on speed booster with 16-35 or 24-70 tamron. When I need the reach, I can swap adaptor and not bring an additional lens.
 
Erik,
Has the fact that the Sigma 24-105 isn't par focal been hard to deal with?
From what I've read it seems the Canon is closer to par focal. Aside from sharpness , flare etc - it sounds like its also a choice between focus changes during the zoom, or Iris drop at the end.
Damn I'm so used to Nikon lenses that have none of these problems - but no one makes a Nikon to video adapter that carries power for image stabilization.
 
As I already said: I don't have the sigma, just borrowed it.

All the photo zooms I used, are not parfocal. I use them more or less as
a "variable prime". I change the focal length without a soft and nice zoom
but just use another focal length without changing the lens.

Depending how you operate your camera, IS is not that important.
I would love to have the Nikon 24-120 on my camera with speedbooster,
but as I have the NEX-Canon speedbooster, I can't use Nikons...
 
Erik Wittbusch said:
As I already said: I don't have the sigma, just borrowed it.

All the photo zooms I used, are not parfocal. I use them more or less as
a "variable prime". I change the focal length without a soft and nice zoom
but just use another focal length without changing the lens.

Depending how you operate your camera, IS is not that important.
I would love to have the Nikon 24-120 on my camera with speedbooster,
but as I have the NEX-Canon speedbooster, I can't use Nikons...
Click to expand...

The Novoflex EF-F adapter with aperture lever isn't too bad, and would give you access to Nikon on your NEX-Canon Speed Booster.
 
Eric - Yeah I think that being par focal may not be as valuable as having a steady iris.

Brianc - Let me get this straight - You're suggesting a Nikon G (with aperture lever to Canon EF adapter) , then an EF to Sony Speed booster to the FS7.
Interesting idea. I'm kind of wary of double adapters but it should work and might simplify how many adapters I need. I already have a photodiox Nikon to Canon. So just need to test it with the speed booster.



I shoot enough handheld that Image stabilization is a something I want. Otherwise the Nikons are perfect.

So far I'm planning on that Sigma 1.8 16-35 since that sounds like a variable prime. Also an 11- 16 Tokina and probably a 70-200 Canon (though I have a Nikon now). Already have Zeiss ZF Nikon 50 and 85 f1.4's that I love but might want to replace everything with the same focus direction. Trade offs in every direction.
 
Another lens to seriously consider for the FS7 for the mid sized zoom is that Sony 18-105 f4 SELP . Its par focal, has a power zoom and Image stabilization. It needs image correction from the camera but is supposed to be pretty sharp after that. The big limitation is you can't use it on 4K or above some high speeds because the camera can't do the correction any more. - but for an all purpose HD doc lens at $600 it will be extremely flexible.. At that price I could still get a Sigma for 4K or high speed. But for HD there would be no compromises. I expect most of my work to remain HD for some time anyway.
 
I will have to try out that Sony 18 to 105 lens. I did try a bunch of the "good" Sony e-mount lenses when I picked up an a7s and found that even the primes breathed when you did manual focus. I recall the 10-18mm f4 was pretty decent operationally.

I ended up going to a std Metabones and a speedbooster metabones with my Nikon f2.8 lenses and am pretty happy with it, knowing the 28-135 is coming out in a few months. Let's hope that it is as good as it is being billed but remember it is a $2500 lens not a $25,000ish one like the ARRI Alura.

arri-alura-18-80-mm-550x550.jpg
 
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Lenilenapi said:
Another lens to seriously consider for the FS7 for the mid sized zoom is that Sony 18-105 f4 SELP . Its par focal, has a power zoom and Image stabilization. It needs image correction from the camera but is supposed to be pretty sharp after that. The big limitation is you can't use it on 4K or above some high speeds because the camera can't do the correction any more. - but for an all purpose HD doc lens at $600 it will be extremely flexible.. At that price I could still get a Sigma for 4K or high speed. But for HD there would be no compromises. I expect most of my work to remain HD for some time anyway.
Click to expand...

So you're saying the FS7 does in-camera lens correction in HD but not in 4K? Is that from Sony?
 
I also got it directly in an email from Juan Martinez the US Sony Rep on this line. He said that with correction it was terrific lens, Parfocal, sharp and the correction would not stress battery use on the camera. At that price it might provide a great R & G doc lens while leaving the budget free for a faster lens when needed , or a speed booster full frame look, primes etc.
Here's what he said about the other R&G lens the 18-200 (which of course is slower - only at 6.3 does it become steady through the iris). I figure I'll get both as they're both cheap and answer the need for doc abilities on a large sensor cam. This is my biggest gripe with the F3 so I'm pretty stoked :

"SELP 18 to 200 isn't [parfocal]. It goes slightly out of focus when starting from full-tight towards wide direction. However, stopping slightly before full tight and engaging the auto focus corrects. There is no other lens that can cover that range, and the picture quality is very good."
 
I used both lenses on my FS100.

The 18-200 is okay. Image quality is good and sharp enough. There is no extreme distortion.
I use it for R+G handheld work, as the IS is the best available.
But it's slow, the MF is cumbersome (focus by wire, unrepeatable). It extrudes strong when zooming in
so that the use of matteboxes isn't possible or at least doesn't make much sense.

The 18-105 is much better built. Constant length, constant aperture (f4), the focus-by-wire responds more
directly and is better but also barely repeatable. The IS is very nice too and the AF works as advertised
and I was wondering that it is usable in combination with face detection.
The Problem here: Without electronic distortion compensation the lens is close to unusable. The distortion
throughout the whole focal length is such extreme, that I won't use it.
The distortion comepensation needs more pixels, than the footage so it works in HD but not in 4k...
 
It's a bit long in the tooth now but I did a comparison between the speedbooster attached to super 35mm sensor and a 5D while there was some good waves down in Sydney's Eastern Suburbs. You might get a bit of info out of it?

I have been using the 24-105mm with the speedbooster for over a year now and it isn't the sharpest lens in the bag and it does lose a bit of light on the long end but it's without a doubt the go-to lens / adapter combo for run & gun for me.

 
Lenilenapi said:
Eeik,
I'm wondering about the Sigma instead of the Canon 24-105.. Any more detail about why you prefer the Sigma?
I just worked with Canon today and hated the way the lens darkens at telephoto end.
Click to expand...


Has anyone been able to solve or at least understand the mystery around the one stop darkening towards the tele end of the otherwise constant Canon 24-105 f/4 L IS, when mounted on a Speedbooster Ultra ?
Just finished a 2 week shoot with that combo on a rental FS7 in Wash. DC. and it was so infuriating.
Never had to work with that one from Canon, only with the excellent 16-35 f/2.8, supplementing Sony's 28-135 ( hopefully after this Feb. the new PZ 18-110 will finally be available in the rental circuit here and everywhere )
The Metabone with the speedbooster was supposed to have the latest FW inside.
 
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