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BMPCC6K EF-S Lenses?

PostPosted: Sat Aug 10, 2019 10:02 pm
by Aaron Hinton
Hey friends,

Does anyone know if the new BMPCC6K will support EF-S lenses? I seem to recall the EF URSA and old Cinema Camera supporting EF-S.

BMPCC6K EF-S Lenses?

PostPosted: Sat Aug 10, 2019 10:04 pm
by Jeff_kirkland
It's super 35, which is close enough to EF-S so it should. I use EF-S lenses on all my other Super 35 cameras.


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Re: BMPCC6K EF-S Lenses?

PostPosted: Sat Aug 10, 2019 10:05 pm
by Aaron Hinton
Thank you! But will EF-S lenses properly mount to the EF body? I know some EF bodies can't mount EF-S lenses at all, right? (Or am I mistaken?)

Re: BMPCC6K EF-S Lenses?

PostPosted: Sat Aug 10, 2019 10:13 pm
by Jeff_kirkland
An EF-S lens won't cover a full frame sensor without vignetting and have an extra bit that sticks out the back, so it would make sense to do something to stop you mounting them to a full-frame camera but I've never owned anything full-frame so I can't speak from experience. You also can't mount them to a lot of speedboosters, because of the extra glass in the adapter.

But it would make zero sense to me to prevent the lenses designed for the size of sensor in the camera from mounting to it. I guess someone who's camera is due to arrive next week will be able to confirm it.


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Re: BMPCC6K EF-S Lenses?

PostPosted: Sat Aug 10, 2019 10:16 pm
by Aaron Hinton
Got it. Thanks so much, Jeff! Very helpful. I think you're probably right that it will work then. I'll be excited to see for sure, once it gets it people's hand. Thanks again.

Re: BMPCC6K EF-S Lenses?

PostPosted: Sat Aug 10, 2019 11:50 pm
by Denny Smith
Since the Pocket 6K is a mirrorless Camera, the extra depth of the lens back, which is an issue on a Canon EF DSLR, should not be an issue. Not sure if the EF-S lenses have a different lens contact setup, but Focus and Iris control should be the same. ;)

Re: BMPCC6K EF-S Lenses?

PostPosted: Mon Aug 12, 2019 5:17 pm
by Tom Donalek
I have the Viltrox adapter that does not have internal glass (mechanical and electronic adapter only, no "speedbooster" effect). It works with both EF and EF-S lenses electronically. (Not all models, though.) Because there is not internal optics, the EF-S lenses will physically mount without the EF-S rear flange hitting anything. That suggests that overall, the EF-S contacts and control system are mostly the same as for EF lenses.

Looking at the photos BM have published of the BMPCC6k, I am concerned by what the inner flange looks like - the black plastic(?) inside the metal mount ring. It looks to be very close to the contacts, and the irritating EF-S plastic rear flange sticks out past the contacts by about 3mm. It would be helpful if Blackmagic would formally confirm that there is not a physical conflict mounting unmodified EF-S lenses on the camera.

Re: BMPCC6K EF-S Lenses?

PostPosted: Mon Aug 12, 2019 6:39 pm
by Denny Smith
Cheers hat would be the best bet Tom. Anyone have a EF-S lens they want to send to BMD in Fremont to get it tested? :roll:
Cheers

Re: BMPCC6K EF-S Lenses?

PostPosted: Tue Aug 13, 2019 9:34 pm
by Emilian Dechev
I am also interested, if anyone tried a EF-S lens on the BMPCC 6K ? A Canon 17-55 f/2.8 would be a nice candidate for an overall good lens.

Re: BMPCC6K EF-S Lenses?

PostPosted: Tue Aug 13, 2019 10:54 pm
by Kristian Lam
Yes it will work.

Re: BMPCC6K EF-S Lenses?

PostPosted: Tue Aug 13, 2019 11:24 pm
by Emilian Dechev
Thanks!

Re: BMPCC6K EF-S Lenses?

PostPosted: Wed Aug 14, 2019 12:35 am
by Jean Capdouzey
Jeff_kirkland wrote:An EF-S lens won't cover a full frame sensor without vignetting and have an extra bit that sticks out the back,


It's not a full frame sensor. It's S35 which virtually APS-C so the EF-S lenses will work fine.

Re: BMPCC6K EF-S Lenses?

PostPosted: Wed Aug 14, 2019 6:34 am
by John Griffin
While EF-S lenses will physically fit they may not be the best choice for exploiting the full potential of the P6k sensor. In short a lot of EF-S lenses are 'budget' designs and you may find performance at the edges of the frame disappointing compared to the better full frame lenses where the image is being cropped out of the central section of the lenses projected image. At least though you don't have to deal with the uncorrected optical distortions in native M43 lenses on the P4k.

Re: BMPCC6K EF-S Lenses?

PostPosted: Wed Aug 21, 2019 12:38 pm
by Frank Engel
A lot of EF format lenses are budget lenses too.

Less expensive lenses in the EF-S format can provide shorter focal lengths that may be more applicable to the smaller sensor size when shooting wide angles. Useful particularly for those... on a budget 8-)

Re: BMPCC6K EF-S Lenses?

PostPosted: Thu Aug 22, 2019 3:00 am
by Tom Donalek
You need to look at the EF-S lens options model by model. Many are cheap, kit lenses, which may be good enough, or may not be for your use. I don't have one, but supposedly, the Canon EF-S 17–55mm f/2.8 IS USM (the most expensive one Canon makes, IIRC) has great optics, for example.

Re: BMPCC6K EF-S Lenses?

PostPosted: Thu Aug 22, 2019 12:11 pm
by Rsmith6k
I've been torn between the Canon 17-55 2.8 and the Sigma 18-35 1.8 for the last week.

Pulled the trigger this morning on the Canon because of the IS and because the Sigma is quite heavy.

Re: BMPCC6K EF-S Lenses?

PostPosted: Fri Aug 23, 2019 4:09 am
by Uli Plank
If you are into run-n-gun it's a good decision, not only because of IS, but you'd have problems to keep focus at 1.8 anyway.
But for controlled shooting, the Sigma is leaving the Canon kit lens in the dust.

Re: BMPCC6K EF-S Lenses?

PostPosted: Fri Aug 23, 2019 10:06 am
by Jean Capdouzey
John Griffin wrote:While EF-S lenses will physically fit they may not be the best choice for exploiting the full potential of the P6k sensor. In short a lot of EF-S lenses are 'budget' designs and you may find performance at the edges of the frame disappointing compared to the better full frame lenses where the image is being cropped out of the central section of the lenses projected image. At least though you don't have to deal with the uncorrected optical distortions in native M43 lenses on the P4k.


Rubbish.