The Canon G11, just like its predecessor the Canon G10 has the ability to add lenses or filters. The process is not that simple as you have to acquire a lens adapter for this task.
The main problem is that Canon sells a cheap plastic adapter which is not considered having as high quality as the camera itself.
However, it is possible to get an even better replacement for this adapter, made out of aluminum instead of plastic.
Keep reading to get more information.
Both Canon PowerShot G10 and G11 use the same adapter so if you’ve previously bought an adapter for the G10, you can use it with your G11.
The thing you have to remember about G11 adapters is that you must get such an adapter that has two parts. If you fail to do so, you may experience vignetting when taking your photographs.
Vignetting basically results with a photograph that has a black circle over its edges. It results from a long adapters blocking the lens’ sight.
Review
These adapters are sold on eBay from either Hong Kong or China. Their price range is about $6 – $12 for an aluminum tube. However, the tube is not perfect. Using the two parts together you will experience vignetting when the zoom is on its wide end. You would have to zoom-in till the black circle disappears.
In order to avoid that side-effect, use only one part of the tube. This way there’s no vignetting, but there’s also a down-side: You cannot use the zoom up to its full range because the G11’s lens is blocked by the external filter or lens you’re using.
The two parts are made of aluminum. They screw into each other, so you can easily separate them apart. I this adapter to be of good quality. The threads required lubing but other than that, it sits tight on the G11 and does not move at all.
Installation
In order to install, press on the black bottom-right button on the front of your G11, and rotate the ring anti clock-wise till it is removed. Put the adapter tube in the same place while making sure the red dot on the adapter is a little over the button. Rotate it clock-wide till you hear the locking sound.
More Solutions
I read in one of the forums about a creative solution requiring one part of the tube and a set of step-up rings. This solution, which I will discuss in a separate article, enables you to completely avoid vignetting at the wide end of the zoom, and be able to use to zoom however you want.
An alternative to this tube would be a lensmate adapter, which I will also discuss in a different article. To make it short, I didn’t like the Lensmate solution as it’s expensive and have some limitations.



“…To make it short, I didn’t like the Lensmate solution as it’s expensive and have some limitations.”
NO, NO, NOOO!
I recently ordered two lensmate parts (A + B), so I don´t want to read about any limitations! (head in the sand position)…
/C.
Thanks for you comment!
This is what I was talking about. Quoting the Lensmate website:
“3. Why not make a 77mm lens adapter?
When the potential for small amounts of vignetting was weighed against making a larger diameter part, we decided that 72mm was the sweet spot for several reasons. First, to make a larger part would require a costly custom aluminum extrusion with a large minimum order requirement. Extra cost to the consumer. Because of maximum size limitations of the CNC equipment being used. ”
I’ll publish more information about it in the future.
Yeah, I already have this adapter, bought it around $10 dollars here in Singapore. Almost all shops are selling it. Really irritating if you only use the 1 part. If the zoom touches the filter lens, it will give you an error and you have to restart the camera.
So is the Canon adapter also the same?
could you please discuss how to use step up rings to avoid vignetting on the g11? which sizes to use etc?
a link to that forum you were speaking about would be perfect.
thank you!
Millionmonk,
The original Canon should act the same (if it has two parts). I’ve just published another article about that problem – simply use step-up rings.
http://canong11.amirw.net/prevent-vignetting-in-canon-g11-by-using-step-up-rings-and-58mm-adapter/
Hi Vlad,
There’s a new post about your question. Sorry it took so much time.
http://canong11.amirw.net/prevent-vignetting-in-canon-g11-by-using-step-up-rings-and-58mm-adapter/
I wish I could find that forum link, it seems to have vanished. It was talking about the Canon G10, but it is the same with the G11.
i’ve founded another types of adapter for Canon G11, It’s JJC RN-2. you can view it at my website. thanks