FS-100 SIGMA Lenses with OS Image Stabilization

[MazingerZ]

I already answered all the questions in my previous posts.
I have this lens (Sigma 2.8 with OS Alpha mount using the LA-EA1 adapter) and I've tested it and I've posted a couple of videos shot with it.

To summarise:

Yes, the OS works on the Alpha-mount Sigma lens with the adapter on the FS 100 - the OS switch is on the lens.
The Sony (and Tokina and Tamron) Alpha-mount lenses do not have stabilisation in the lens, therefore they will not have stabilisation on the FS 100.
The Sony Alpha DSLR cameras have 'Steadyshot' in the DSLR body/sensor.
When using the Sigma OS lens on an Alpha DSLR cameras, you can use either the OS on the lens or the 'Steadyshot' on the body/sensor -- but not both at the same time.


You can hear the OS working on the Sigma lens mounted on the FS 100 in this video:

http://www.youtube.com/watch?v=4O_X_gVI5hc

I'm moving the camera on purpose so you can hear it working.

 

[MazingerZ]

Wondering about the same issues for this lens:

http://www.bhphotovideo.com/bnh/controller/home?O=WishList.jsp&A=details&Q=&sku=545868&is=REG

As already mentioned in the previous posts in this thread, none of the Sony Alpha-mount lenses have stabilisation.
If you read the description in that B&H link, it says "In-Camera stabilisation" and it's not on the lens.

Again, the only Alpha-mount lenses that have stabilisation on the lens are the Sigma OS lenses.

 

[alexdias]

Yes. Your second video have some really good handheld shots which makes me very hopeful for run and gun with a lens like the Sigma and the OS is clearly working as you say.
Thank you.

 

[Michael Vargas]

I had a quick question about shooting video w/ the Sigma. I had a 18-200mm Sigma on my 7D and whenever I would zoom in or out the lens would automatically make aperture adjustments. Have you found your 17-50mm Sigma to do this same "auto exposure" on your FS100?

Thanks

 

[maarek]

I had a quick question about shooting video w/ the Sigma. I had a 18-200mm Sigma on my 7D and whenever I would zoom in or out the lens would automatically make aperture adjustments. Have you found your 17-50mm Sigma to do this same "auto exposure" on your FS100?

Thanks

Constant aperture lenses don't do that on the 7d. The 17-50mm sigma is f2.8 constant so it will not do that.

 

[P. Harrill]

Am I correct in assuming that only Alpha-mount Sigmas with OS -- as opposed to Nikon-mount Sigmas -- would allow image stabilization since the Nikon adapters (like the Novoflex) can't provide any power to the lens?