Micro Studio Camera Cropfactor?

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Niklas Olofsson

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Micro Studio Camera Cropfactor?

PostTue Feb 16, 2016 5:21 pm

I'm trying to find the right lens for my MicroStudio Camera, but I'm not sure about the cropfactor.
Using a "mft" lens doesn't it mean I have the optimal size for the camera / sensor, does it?

Let's say I use this lens:
http://www.olympus.co.uk/site/en/c/lens ... index.html

Do I then have an Angle of view of 84° with the "Micro Studio Camera" or not?
Or is it 84° with a camera like the "GH4" and a sensor size of 17,3 x 13,0 mm?

And what about using Canon EF, APS-C or FullFrame Lenses or even a B4 Lens ?
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Denny Smith

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Re: Micro Studio Camera Cropfactor?

PostTue Feb 16, 2016 6:25 pm

The first thing I suggest you do is Forget about crop factors! What format have you been shooting in?
Next, I suggest you get an application like "pCam",which,gives,comparisons of focal length and angle of view for various cameras/formats including MFT cameras,and BM cameras.

The Micro Studio sensor is just slightly larger than the Super 16 size sensor in the Pocket camera, so I suggest you treat it like a S16 size doe,lens selection proposes. A "normal" angle of view lens for Micro (S16+) would be about 18mm to get a 50mm equivalent angel of view (45-degrees) of a 50mm lens on a FF 35mm camera. So now, the 12mm lens on the Micro is going to have nice wide angle field of view (82-degrees). I use 12mm dor wide shots, a 16-18mm for normal angle of view shot, and 30-45mm for long interview type shots.

You can use a Metabones BMPCC speed booster with APC and FF 35mm lenses, like the Zeiss ZF, which I started out using, but have been replacing them (except my favorite 28mm Zeiss lens) the Veydra Mini Primes which are designed for a smaller format camera, and are better for cine type follow focus shooting.
The Zeiss worked great in the TV studio, giving two focal lengths for each lens when used with and without the speed booster. A 50mm lens for example, on the SB gives the angle of view of a 29mm lens on Super 16/ BM Studio/Micro cameras, which gives about a 28-degree angle of view.

Using adapters for various lenses you may already have or like to use, is one of the advantages to using a MFT lens mount with its short FFD. You,can also use the excellent PL mount Zeiss Super Speed lenses designed for S16. I have the Zeiss SS 12mm in a PL mount, which is excellent on the Micro Studio/Pocket camera.

You can also B4 lenses, but since they were designed for 2/3rds 3-CCD TV cameras, you are going to need a special adapter with an optical block to correct the RGB focus and expand the lens image circle to cover the S16" sensor.

Several good B4 adapters are available for B4 to MFT, but they cost from $1,500 (AbelCine PL/MFTx2 adapter) to $3K, unless BM makes one for less, like they did for the Mini URSA camera. You are still going to need a cable adapter on the Micro Stusio to go from the B4 lens 12-pin connector to a Db9 on the Micro, and currently, only the newer digital HD B4 lens protocols are supported inthe Micro Studio/ATEM CCU for remote lens control. This adapter however, is not currently available. AbelCine does make a simple power adapter for the lens to allow local control by camera op over the zoom and Iris functions which works with any B4 lens. See "Live Production" forum for discussions on this and other Micro Studio camera topics.

I used a Wooden Camera cage for both the Pocket and and Micro Studio, so I could use their (WC) replacement foot in the Speed Booster, which attaches to the cage, like their BMPCC PL to MFT adapter, which eliminates the slight rotational play in the MFT mount on both adapters, and makes for a very solid lens mount system with either adapter.
Cheers
Denny Smith
SHA Productions
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Niklas Olofsson

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Re: Micro Studio Camera Cropfactor?

PostThu Feb 18, 2016 8:02 am

Denny, thanks for all that info.
Well, as "we" know the B4 option is not yet an option, so I have to go for some other Adapters and lenses.

What I need is a very wide angle lens - a horizontal view of about 100-degrees.
If I am taking that Olympus (mft) or any other mft-mount lens in 12mm with a x0.8 Wide-Angle-Converter I get that fov. Or a 9mm (mft) lens.
Did I understand that right?

Just for my understanding....
Using the same mft-lens on a MicroStudio and on a GH4 gives me different fov ?
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Denny Smith

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Re: Micro Studio Camera Cropfactor?

PostThu Feb 18, 2016 5:26 pm

A 10mm SLR Magic will get you about 95-degrees on a MFT/AF100 size sensor. But on the S16 size sensor on the Micro Studio, the widest readily available lens is a 8mm, which will get you a 85-degree AOV. To get wider you need an ultra wide lens like Stanly Kmused, very hard to come by, and expensive when you do.

On a BMPCC Speed booster you would need a 10mm APC or FF lens to get around 98-degree AOV. A Tokina 11-16 zoom in a Nikon or EF mount (I would go with Nikon to get better Iris control and keep cost down) at 11mm with the BMPCC SB on the Micro you will be getting close to what you want.

You could also get a 7-14 Ultra wide zoom, but you would need a WA matte box to get filters on it, or make a special filter holder to slip,over the shade. Any wider MFT lenses tend to be "fish eye" non linear type lenses. Good luck!
Cheers
Last edited by Denny Smith on Thu Feb 25, 2016 1:58 am, edited 1 time in total.
Denny Smith
SHA Productions
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Niklas Olofsson

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Re: Micro Studio Camera Cropfactor?

PostThu Feb 18, 2016 6:44 pm

Denny thanks for your very good explanations, you are a great help.
I think, I will test that Olympus 7-14mm ultra wide zoom, to have some room to move and try out which is the best focal length.
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Mark Howser

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Re: Micro Studio Camera Cropfactor?

PostWed Feb 24, 2016 7:32 pm

I've heard good things about the Tokina 11-16mm for wide angles on the BMCC and BMPCC (or wider angles, anyway, as nothing on the BMCC or BMPCC is truly wide). At only 450, I might pick one up myself.
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Denny Smith

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Re: Micro Studio Camera Cropfactor?

PostFri Feb 26, 2016 10:20 pm

You also have the Panny and Oly 7-14 f/4.0 option for native MFT lenses. 7-10mm is going to give you a nice wide shot. But if you put the Tokina 11-16 on a Speed Booster (Nikon/EF version) you will get a 6.5-9mm angle of view on the Pocket, similar results for AOV on the BMCC.
Last edited by Denny Smith on Sat Feb 27, 2016 2:09 am, edited 1 time in total.
Denny Smith
SHA Productions
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Niklas Olofsson

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Re: Micro Studio Camera Cropfactor?

PostFri Feb 26, 2016 10:52 pm

The Speed Booster idea sounds great. I think i will test that.

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