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Modify an MC-11 to accept Canon ef-s lenses?
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Jun 22, 2019 17:19:32   #
lhardister Loc: Brownsville, TN
 
I recently bought on e-bay a Sigma MC-11 mount converter to adapt Canon lenses to my Sony e mount (a6000) camera. To my chagrin, I discovered that it would only accept Canon EF lenses; my Canon ef-s lenses would not "fit up" or mount to the adapter. I have since read some comments online to the effect that one could remove the four small screws securing the lens mounting plate, remove the mounting plate, and find a plastic or rubber spacer/bumper held by another set of four small screws. Supposedly, one could remove these four screws, remove the plastic/rubber spacer, then replace the mounting plate, and EF-s lenses could then be mounted to the device. I have not had the nerve to try it. Does anyone have any experience or information on this procedure--or indeed, on any practical way to "fit-up" EF-s lenses to an MC-11?

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Jun 22, 2019 17:45:57   #
crapshooter Loc: Fox, Alaska
 
I have a DLC Dot line Electronic Lens Adaptor its for EF & EF-S Lens to E-Mount Camera , even has a detachable foot on it...... The number on the box is DL-0785 You could go to dotlinecorp.com I bought this lens when i purchased my A6000 because i had a sigma 150-600 C canon mount lens i wanted to use with the A6000. It works fairly well but i thought was too slow for my 150-600, my other canon ef lens all work on it fine, i put the 150-600 on a 80D canon now and works much better with no adaptor. I always wondered if sigma MC-11 would work better with my 150-600 because its sigma but dont want to spend the money for it. Anyways thought i would mention to you about the Dotline adaptor for EF and EFS

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Jun 23, 2019 00:19:37   #
MT Shooter Loc: Montana
 
lhardister wrote:
I recently bought on e-bay a Sigma MC-11 mount converter to adapt Canon lenses to my Sony e mount (a6000) camera. To my chagrin, I discovered that it would only accept Canon EF lenses; my Canon ef-s lenses would not "fit up" or mount to the adapter. I have since read some comments online to the effect that one could remove the four small screws securing the lens mounting plate, remove the mounting plate, and find a plastic or rubber spacer/bumper held by another set of four small screws. Supposedly, one could remove these four screws, remove the plastic/rubber spacer, then replace the mounting plate, and EF-s lenses could then be mounted to the device. I have not had the nerve to try it. Does anyone have any experience or information on this procedure--or indeed, on any practical way to "fit-up" EF-s lenses to an MC-11?
I recently bought on e-bay a Sigma MC-11 mount con... (show quote)


The Sigma MC-11 adapter was not built to Canon brand EFS crop sensor lenses, but it WILL work with all other brand crop sensor Canon mount lenses. Canon intentionally adds a hard rubber extension to the rear of these lenses to make them limited use. You would have to use a dremel tool or something similar to remove that extension to get the Canon EFS lenses to work. Just buy better lenses and you will have no such issue.

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Jun 23, 2019 08:11:24   #
gessman Loc: Colorado
 
You can stick a finger through the hole of that shroud on the back of an ef-s lens and, applying pressure from the inside, pop the shroud out and use the lens that way. If your finger isn't enough you might need to use a leverage tool, maybe a screwdriver. I don't know if it's still up but go to YouTube and search for altering efs lens to use on full frame bodies, specifically a 10-22mm lens. It'll warn you that if you go lower than 12mm the mirror will hit the back of the lens but used on an adapter that wouldn't be a factor. If you don't find a video there, search here because there's a thread about how to do it by user Wendy2 back about 2012.

EDIT: Canon would, but no more, sell you a cover to finish the efs to ef conversion for about $15 to help keep dust out. In fact, here's the url - https://www.uglyhedgehog.com/t-577074-1.html to Wendy's thread and here's the url to the how-to video - http://www.benjacobsenphoto.com/2010/gear/canon-10-22mm-ef-s-to-ef-conversion-2/. I guess you could always get the dust ring off of a broken ef lens if you felt it was necessary. The shroud may break when you remove it but the lens will still work on either ff or crop body. I've removed the shroud a couple of times without any problem.

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Jun 23, 2019 08:52:39   #
Blurryeyed Loc: NC Mountains.
 
lhardister wrote:
I recently bought on e-bay a Sigma MC-11 mount converter to adapt Canon lenses to my Sony e mount (a6000) camera. To my chagrin, I discovered that it would only accept Canon EF lenses; my Canon ef-s lenses would not "fit up" or mount to the adapter. I have since read some comments online to the effect that one could remove the four small screws securing the lens mounting plate, remove the mounting plate, and find a plastic or rubber spacer/bumper held by another set of four small screws. Supposedly, one could remove these four screws, remove the plastic/rubber spacer, then replace the mounting plate, and EF-s lenses could then be mounted to the device. I have not had the nerve to try it. Does anyone have any experience or information on this procedure--or indeed, on any practical way to "fit-up" EF-s lenses to an MC-11?
I recently bought on e-bay a Sigma MC-11 mount con... (show quote)


No it will not work and it will damage the adapter, if you remove a spacer from the adapter you change the flange distance between the camera mount and the sensor, even the slightest variance will cause the camera to lose the ability to infinity focus.

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Jun 23, 2019 11:51:01   #
Soul Dr. Loc: Beautiful Shenandoah Valley
 
Viltrox makes a Canon EF, EFs to Sony E mount adapter. I use one of their adapters to use Canon EF, EFs lenses on my Fuji X mount cameras.
It works pretty well, with AF and aperture control. They can be found on ebay or amazon.

will

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Jun 23, 2019 13:42:19   #
gessman Loc: Colorado
 
Soul Dr. wrote:
Viltrox makes a Canon EF, EFs to Sony E mount adapter. I use one of their adapters to use Canon EF, EFs lenses on my Fuji X mount cameras.
It works pretty well, with AF and aperture control. They can be found on ebay or amazon.

will


Hmmm. Interesting. I have a Viltrox for my EF to Sony e mount and it isn't worth a plug nickle - doesn't even try to autofocus my lens, had to manual focus but the Sigma mc-ll works almost as good with my Canon lens on Sony as they do on my Canon bodies.

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Jun 23, 2019 13:55:59   #
Soul Dr. Loc: Beautiful Shenandoah Valley
 
gessman wrote:
Hmmm. Interesting. I have a Viltrox for my EF to Sony e mount and it isn't worth a plug nickle - doesn't even try to autofocus my lens, had to manual focus but the Sigma mc-ll works almost as good with my Canon lens on Sony as they do on my Canon bodies.


That's odd. I have no problems using the EF lenses with the viltrox adapter on my Fujis.
AF and aperture works just like my Fuji lenses.

will

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Jun 23, 2019 15:24:58   #
gessman Loc: Colorado
 
Soul Dr. wrote:
That's odd. I have no problems using the EF lenses with the viltrox adapter on my Fujis.
AF and aperture works just like my Fuji lenses.

will


Sounds like ether they improved the Viltrox or the Fuji is a better fit. Well, I'm glad that you got a good deal even if I didn't.

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Jun 23, 2019 15:49:31   #
lhardister Loc: Brownsville, TN
 
gessman wrote:
You can stick a finger through the hole of that shroud on the back of an ef-s lens and, applying pressure from the inside, pop the shroud out and use the lens that way. If your finger isn't enough you might need to use a leverage tool, maybe a screwdriver. I don't know if it's still up but go to YouTube and search for altering efs lens to use on full frame bodies, specifically a 10-22mm lens. It'll warn you that if you go lower than 12mm the mirror will hit the back of the lens but used on an adapter that wouldn't be a factor. If you don't find a video there, search here because there's a thread about how to do it by user Wendy2 back about 2012.

EDIT: Canon would, but no more, sell you a cover to finish the efs to ef conversion for about $15 to help keep dust out. In fact, here's the url - https://www.uglyhedgehog.com/t-577074-1.html to Wendy's thread and here's the url to the how-to video - http://www.benjacobsenphoto.com/2010/gear/canon-10-22mm-ef-s-to-ef-conversion-2/. I guess you could always get the dust ring off of a broken ef lens if you felt it was necessary. The shroud may break when you remove it but the lens will still work on either ff or crop body. I've removed the shroud a couple of times without any problem.
You can stick a finger through the hole of that sh... (show quote)


Thanks, gessman. That is really nice information to know, particularly since I happen to have a Canon ef-s 10-22 and a Canon FF 6Dmkii.

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Jun 23, 2019 16:29:33   #
gessman Loc: Colorado
 
lhardister wrote:
Thanks, gessman. That is really nice information to know, particularly since I happen to have a Canon ef-s 10-22 and a Canon FF 6Dmkii.



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Jun 23, 2019 16:30:48   #
lhardister Loc: Brownsville, TN
 
Soul Dr. wrote:
Viltrox makes a Canon EF, EFs to Sony E mount adapter. I use one of their adapters to use Canon EF, EFs lenses on my Fuji X mount cameras.
It works pretty well, with AF and aperture control. They can be found on ebay or amazon.

will


Thanks for your reply, Will. I have a couple of other Canon-to-Sony-e-mount adapters that I can use with ef-s lenses, one of which is a Viltrox that does reasonably well. I picked up this mc-11 at something of a bargain on ebay hoping that it would work faster and smoother than the adapters that I already had on hand. I have not yet used it enough to form any opinions about its performance with regard to the FF Canon lenses that I have.

Best regards,

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Jun 23, 2019 16:40:56   #
gessman Loc: Colorado
 
lhardister wrote:
Thanks for your reply, Will. I have a couple of other Canon-to-Sony-e-mount adapters that I can use with ef-s lenses, one of which is a Viltrox that does reasonably well. I picked up this mc-11 at something of a bargain on ebay hoping that it would work faster and smoother than the adapters that I already had on hand. I have not yet used it enough to form any opinions about its performance with regard to the FF Canon lenses that I have.

Best regards,


Hate to keep sticking my nose in here but my mc-11 is fantastic. I use it with an a6500 and EF100 macro, 70-200 f/2.8, and 400 f/5.6 and it focuses real fast, right up there with my Canon bodies. I got it to use primarily with the 400mm non IS lens with the a6500 IBIS and I'm really impressed.

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Jun 23, 2019 16:45:12   #
lhardister Loc: Brownsville, TN
 
gessman wrote:
Hate to keep sticking my nose in here but my mc-11 is fantastic. I use it with an a6500 and EF100 macro, 70-200 f/2.8, and 400 f/5.6 and it focuses real fast, right up there with my Canon bodies. I got it to use primarily with the 400mm non IS lens with the a6500 IBIS and I'm really impressed.


Glad to hear that. It makes me feel better about my "bargain" purchase, even if I may not be able to use it with ef-s lenses!

Best regards,

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Jun 23, 2019 16:51:24   #
amfoto1 Loc: San Jose, Calif. USA
 
Rather than modifying the adapter, you'd have better luck modifying the lens.

The EF-S lens mount is a variation on the EF mount. The bayonet and lens register are the same, but (as noted in some previous responses), Canon added a hard rubber or plastic part to prevent EF-S lenses on cameras not specifically set up for them (i.e., all Canon APS-C after the 10D in 2004).

Some people remove that part, in order to fit the EF-S lens to more cameras including Canon's full frame, APS-H (1D-series) and early APS-C (10D, D60 and D30) DSLRs.

If you search online how to modify EF-S lenses to fit EF cameras, you can probably find some examples... possibly even specific to your particular lenses.

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