General Questions

What does your product do ?

Our product is a set of replacement parts for converting a Contax N-mount lens to Canon EF-mount. After the conversion the lens will stop down the aperture and autofocus as commanded by the camera body.

How does your product work ?

A microcomputer emulates a N-mount camera while talking to the lens, and emulates an EF-mount lens while talking to the camera body.

Why do I want to do it ?

If you are a Contax N-system owner, you may migrate to Canon while leveraging your existing investment in N-mount lenses.

Where are you located ?

We are in Vancouver, Canada.

What is the significance of your product ?

This is the world's first independent lens mount conversion which preserves autofocus and auto aperture.

What does the name conurus mean ?

A conure is a small parrot from South America. All New World parakeets were once classified under a single genus Conurus. Nowadays, the name is not used in scientific taxonomy anymore, but the pet trade still uses it.

Product Questions

Can I buy the modification kit without installation?

Not any more. We used to think you could take our kit and pay a professional camera repairman/repairwoman to perform the installation on your lens, but so far none of our customers have been able to find a shop which is willing to do so. We know of a number of customers who attempted DIY against our recommendation, but their success rate was very low.

Does the modification void my warranty ?

Modifying a lens certainly voids all warranties of the lens.

Why don't you make an adapter which simply attaches to a N-mount lens ?

It is impossible to make such an adapter because the N-mount has a very large diameter. Unfortunately, the original N-mount has to be removed to make room. This has nothing to do with the conurus circuit board at all but rather physical fitment - it is the same reason why it is impossible to make an adapter to mount Pentax K lenses to Nikon F mount, for example, without losing infinity focus.

If you do not like the idea of modifying lenses, you will have to use Contax 645 lenses and wait for our C645 adapter.

I emailed you a while ago to order your product but got no reply. How come ?

I may have replied to you, but your mail server may have blacklisted our IP. I suspect that certain spammers used the same ISP as us, and as a result, mail services such as Yahoo has blocked all email coming from us.

The second reason might have been that I have a demanding daytime job and I only do this during weeknights and weekends. I may be working with my suppliers, solving issues for existing customers, working on firmware, mechanical design, electronics design, circuit board design, keeping the books, or updating this web site. I work 100 hours per week in order to bring you this unique technology. I will eventually answer your email. Thank you for your patience in the meantime.

I don't care about AF. Could you leave AF out and give me the future product (such as the C645 adapter) now ?

No. The bottleneck is not the electronics. It is always mechanical design and machining the physical parts taking the longest time.

Can you notify me on new product releases ?

Yes ! Please join our technical support forum. An email will be send out to all forum members when new products become available.

More questions?

My status Please post your question on our technical support forum, or contact me at coneos@conurus.com. If you would like to place an order and send us your lens we would be greatly appreciated if you would let us know which country you are from when you email us. You may also call me with Skype if I am online. The best time to call is
PST (GMT-8) West Coast7pm-11pm
EST (GMT-5) East Coast10pm-2am
CET (GMT+1) Germany, Italy, France, etc.4am-8am
CST (GMT+8) Taiwan, Hong Kong, etc.11am-3pm