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View Full Version : APS-C Lenses and the FS100



Hidef1080
05-04-2011, 05:40 AM
Because Super 35 is closer in size to APS-C and not full frame 35mm, will lenses that are made for APS only work on the FS100?


For example: Sigma has a 17 to 50 2.8 for APS-C cameras only and I wonder if it would work on the FS100 with the right E mount adapter.

J Davis
05-04-2011, 06:39 AM
Because Super 35 is closer in size to APS-C and not full frame 35mm, will lenses that are made for APS only work on the FS100?


flange distance for e mount is 18mm
flange distance for eos is 44mm
nikon f is 46mm
yeh baby! - big fat adapters here I come
lets hope birger are already working on eos aperture controllers

cgold
05-04-2011, 07:28 AM
I think he is asking if the image circle of APS-C lenses will cover Super 35, which I believe they will almost always. Lenses usually overproject their image circle a little bit, and people having been testing Nikon DX lenses on the F3 and so far everything has worked (to my knowledge). There will probobaly be a bit more light fall off on the super 35 sensor though.

The only lenses I might be worried about are the EF-S lenses made by Canon since Canons APS-C is a bit smaller then Nikon & Sony's APS-C.

A lens I really want to try out on the FS100 is the Sigma 8-16mm, the FOV on that should be pretty amazing.

J Davis
05-04-2011, 12:01 PM
aps-c
22.3mm x 14.9mm

Three Perf Super 35mm is 24.89mm x 14mm
Four Perf Super 35mm is 24.89 x 18.66mm

mico
05-04-2011, 12:40 PM
Canon aps-c - 22.3mm x 14.9mm / 26.7mm diagonal

Fs-100 - 23.6mm x 13.8mm / 27.1 diagonal


i think ef-s lenses will be fine

kurth
05-04-2011, 01:47 PM
it seems the quickest route to aps lenses would be to use the sony alpha to nex adapter and then use sony alpha lenses or third party- the alpha adapter is alot cheaper than the unreleased birger - the problem is if memory serves , the adapter has very very slow Af but all other connections are present

Rick Burnett
05-04-2011, 02:05 PM
Birger is making an E-mount to EOS adapter, I have confirmed that. The release date will be after the m4/3 as they were preparing for a July release of the FS100. However, Ablecine has said Sony told them it will be end of May now.

That said, what Sony mount does the Sigma lenses come in?

cgold
05-04-2011, 02:24 PM
Right now the Sigmas are only available in A mount (Sony wise). They have said they will support E mount, but currently have only announced a new small 30mm 2.8 lens for the E mount.

ectobuilder
05-05-2011, 09:32 AM
The biggest thing for me is the lens' ability to handle auto exposure as I find the Canon (or any DSLR) lenses (motor) to be too slow and noisy.

Yes they offer bang for buck but the cine-lenses such as Zeiss definitely offer a smoother/complex mechanical motor optimized for video.

Rick Burnett
05-05-2011, 10:00 AM
I thought most of the cine lenses were all manual focus?

Barry_Green
05-05-2011, 10:17 AM
All cine lenses are 100% manual focus.

Hidef1080
05-05-2011, 10:34 AM
First thanks cgold and others for your input.


I've never shot with a V-DSLR and of the video cameras I've owned all have had fixed lenses so the whole video with still camera lenses thing is new to me.

I already have some full frame Sony Amount lenses but I'm trying to flesh-out any unforeseen issues before I buy “the wrong lens” or get get any surprises.
My widest is a 28mm 2.8 which I know won't be wide enough given the 1.5 to 1.6 crop factor so I know I'll need a new lens.

Being able to use full frame or APS lenses gives me some options.


True cinema glass is out of my price range.


Thanks again guys.
All of you.:thumbup:

Rick Burnett
05-05-2011, 11:08 AM
Tokina makes an 11-16 F2.8 that is absolutely great if you want that width on APS-C. HIGHLY recommended.

Kraut69
05-05-2011, 02:41 PM
I guess I was thinking there was no crop factor to be applied to the FS-100, so if there is what is it?

Barry_Green
05-05-2011, 02:45 PM
If you mean in reference to a "full frame" stills camera, yes there's a "crop factor". If you mean in reference to an APS-C camera, there's practically no difference, in fact there would be a tiny "reverse" crop factor.

Rick Burnett
05-05-2011, 02:53 PM
I think it is 1.6 compared to full frame. I only mentioned in comparison to full frame because you referred to the lenses as full frame lenses, assumed that was your frame of reference :)

Jason Allen
05-05-2011, 08:26 PM
My Tokina 12-24mm f/4 vignetted at 12mm on the PMW-F3 that I demoed a few weeks ago, but it was fine with a slight push towards 14mm. All of my other Nikon-mount APS-C lenses worked fine. Same sensor between the F3 and the FS100, so I would say that based on my observations, most APS-C lenses (Canon EF-s, Nikon DX, etc) WILL work on Super35mm sized sensors, but some may have vignetting.

J Davis
05-05-2011, 08:46 PM
I've never shot with a V-DSLR and of the video cameras I've owned all have had fixed lenses so the whole video with still camera lenses thing is new to me.


The first and most important concept to grasp when transitioning from a fixed camcorder to shooting video on still lenses is the redefinition of the word "zoom".

ie. You can't make a zoom shot. There is no such thing as motorized rocker and no still zoom that I've seen can accomplish this shot without post work.

So with still zoom lenses, treat them as variable primes. So a nikon ais 50-135 constant aperture f3.5 is like having a whole bunch of f3.5 primes all in one lens.

The only other thing I would add is that 17mm thru to 85mm are going to be your most used focal lengths. A great starter lens combo would be a 17-55 or 17-50 zoom (variable prime) to give you coverage on your focal lengths and a vintage 50mm f1.4 so you can start playing and learning and having fun with dof. It's a blast ... you're going to love it.