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Olypmus C720's and Teleconverters (1 Viewer)

L

leithp

New member
I've seen the ever-popular TCON-17 1.7x teleconverter, but I have read on one (and only one) site that they are not compatible with the C720, specifically, although they work with other C7x0's --

I have a C180 that fits, but I get some pretty serious vignetting with it. It's a 1.7 teleconverter not specifically designed for the C7x0 series.

I'd like a 1.7-2.0x teleconverter for this camera, but I'm doing some research first to see if anyone out there has one that they are happy with with this camera (the Olympus C720, specifically).

So... does anyone out there have this camera and a teleconverter they are happy with?

Thanks
Phil Leith
 
Phil,
Olympus itself says that the TCON-17 is not compatible with the C-700, C-720 and C-730. However, I use it on my C-730 and it works GREAT. I have seen other postings on this forum that say it works fine with the C-700. Soooo, I would think that it should also work with the C-720.

Rich
 
Olympus C720 & TCON-17

I tried a TCON-17 today. You just need a 52mm-55m stepup ring. Focused fine and no noticible light falloff.

I did notice that when I took my test picture there is a purple line all along the edges of where really bright things bordered really dark things (white buiding/car, dark colored trees) .... I've heard of this. What's it called?

Are there filters that reduce this effect (eg, polarizers?)

RAH said:
Phil,
Olympus itself says that the TCON-17 is not compatible with the C-700, C-720 and C-730. However, I use it on my C-730 and it works GREAT. I have seen other postings on this forum that say it works fine with the C-700. Soooo, I would think that it should also work with the C-720.

Rich
Click to expand...
 
leithp said:
I tried a TCON-17 today. You just need a 52mm-55m stepup ring. Focused fine and no noticible light falloff.

I did notice that when I took my test picture there is a purple line all along the edges of where really bright things bordered really dark things (white buiding/car, dark colored trees) .... I've heard of this. What's it called?

Are there filters that reduce this effect (eg, polarizers?)
Click to expand...
What you are seeing is called Chromatic Abberation. Here is a link to check it out further.
http://farside.ph.utexas.edu/teaching/302l/lectures/node126.html

Most purple fringing can be removed in Photoshop, Photoshop elements and to a lesser degree (for me anyway) in PaintshopPro.
 
Last edited:
This problem is supposed to exist even without the TCON-17. From what I've read, it is very common in just about all current digital cameras with big zoom lenses. I suppose the TCON-17 might exagerrate the problem.
 
There is no real structural difference between your C720 and my C700. I use a CLA-4 adapter which screws into the camera body where the lens array enters the camera.
My Tcon-17 attaches to this and gives me a brighter image than the camera alone does. I do not get any noticable chromatic abberration. I was put off for a while by the Olympus site info. regarding the Tcon being suitable only for later C-series models. Perhaps Olympus need a new Marketing Manager, the current one is pretty useless from a consumers point of view.
I suggest you try your camera& Tcon-17 using a CLA-4 adapter. I suspect this will solve the chromatic abberation problem.
Note that when you use this lens you must zoom it to avoid the vinagetting.
Robert
 
Hey, thanks everyone! I got a TCON17 and a 52-55 mm stepup ring to go from my other adaptor for 52 mm threads.

I do get the chromatic aberations when taking s highly challenging shots (dark against bright backgrounds) -- but I found I get that with the regular lens anyway, this just amplifies it. Normal shooting conditions show no noticible aberation.

So look out, finches!

Thanks for everyone's help!

bigbadja said:
There is no real structural difference between your C720 and my C700. I use a CLA-4 adapter which screws into the camera body where the lens array enters the camera.
My Tcon-17 attaches to this and gives me a brighter image than the camera alone does. I do not get any noticable chromatic abberration. I was put off for a while by the Olympus site info. regarding the Tcon being suitable only for later C-series models. Perhaps Olympus need a new Marketing Manager, the current one is pretty useless from a consumers point of view.
I suggest you try your camera& Tcon-17 using a CLA-4 adapter. I suspect this will solve the chromatic abberation problem.
Note that when you use this lens you must zoom it to avoid the vinagetting.
Robert
Click to expand...
 
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