100-400 L and Kenko Teleplus Pro 300 DG 1.4X ?

Started Jul 12, 2005 | Discussions
Michael Kilpatrick
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100-400 L and Kenko Teleplus Pro 300 DG 1.4X ?
Jul 12, 2005

The Kenko is a lot cheaper than the Canon 1.4x here in Australia, but is claimed to be a high quality tc.

Any first hand reports, particularly when used with a 100-400?

Couldn't find anything in Search.

Thanks for any info
--
Michael Kilpatrick
http://www.pbase.com/mrk03

Mike Dobbs
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Re: 100-400 L and Kenko Teleplus Pro 300 DG 1.4X ?
In reply to Michael Kilpatrick, Jul 12, 2005

I'm using this TC with my 70-300 DO IS...see my recent post with some pictures. The Canon TC is not compatible with my lens (rear element interference with the TC's front element). The Kenko does not have this issue and the IS, Autofocus and Apeture all work perfectly.

mike.

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Tigadee
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Re: 100-400 L and Kenko Teleplus Pro 300 DG 1.4X ?
In reply to Michael Kilpatrick, Jul 13, 2005

I am using the Kenko 1.4x TC with my 28-300mm IS L and it seems to work prety good. AF can be a bit iffy sometimes in less than bright light but otherwise the results are quite good.

Settings: Handheld, no flash, P Mode, ISO 800, Fluroscent WB, IS
Mode 1, Center AF.

28mm

-
300mm

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300mm x 1.4 Kenko TC

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Michael Kilpatrick
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Re: 100-400 L and Kenko Teleplus Pro 300 DG 1.4X ?
In reply to Tigadee, Jul 13, 2005

Thanks to both of you for your responses and for these samples.

I have placed an order for one of these tc's.

Regards
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Michael Kilpatrick
http://www.pbase.com/mrk03

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Richt2000
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yes...
In reply to Michael Kilpatrick, Jul 13, 2005

Yes, I've used this combination exactly (100-400 L and 1.4x Pro 300)

You'll need to tape some pins to re-enable AF, which at f8 in hunty and slow. However does work with a high contrast edge and plenty of light.

As for optical performance, stopped down to f11-f16 I got reasonable results, but didn't think much of it at f8 and 560mm. Between f11 and f16, your getting dificultly slow shutter speeds (even with IS). I'd highly recommend a tripod !

You might find you get better results from shooting at f8 at 400mm with IS and cropping and interpolating using one of the better fractal algs.

Michael Kilpatrick wrote:

The Kenko is a lot cheaper than the Canon 1.4x here in Australia,
but is claimed to be a high quality tc.

Any first hand reports, particularly when used with a 100-400?

Couldn't find anything in Search.

Thanks for any info
--
Michael Kilpatrick
http://www.pbase.com/mrk03

-- hide signature --

Click profile for current and previous equipment.

Website : http://www.fotoz.co.uk

 Richt2000's gear list:Richt2000's gear list
Sony RX100 Olympus OM-D E-M5 Sony Alpha 7R Nikon AF Nikkor 18-35mm f/3.5-4.5D IF ED Canon EF 70-300mm f/4-5.6L IS USM +9 more
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Richt2000
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btw - I love your africa galleries ! (nt)
In reply to Richt2000, Jul 13, 2005

Richt2000 wrote:
Yes, I've used this combination exactly (100-400 L and 1.4x Pro 300)
You'll need to tape some pins to re-enable AF, which at f8 in hunty
and slow. However does work with a high contrast edge and plenty of
light.

As for optical performance, stopped down to f11-f16 I got
reasonable results, but didn't think much of it at f8 and 560mm.
Between f11 and f16, your getting dificultly slow shutter speeds
(even with IS). I'd highly recommend a tripod !

You might find you get better results from shooting at f8 at 400mm
with IS and cropping and interpolating using one of the better
fractal algs.

Michael Kilpatrick wrote:

The Kenko is a lot cheaper than the Canon 1.4x here in Australia,
but is claimed to be a high quality tc.

Any first hand reports, particularly when used with a 100-400?

Couldn't find anything in Search.

Thanks for any info
--
Michael Kilpatrick
http://www.pbase.com/mrk03

-- hide signature --

Click profile for current and previous equipment.

Website : http://www.fotoz.co.uk

-- hide signature --

Click profile for current and previous equipment.

Website : http://www.fotoz.co.uk

 Richt2000's gear list:Richt2000's gear list
Sony RX100 Olympus OM-D E-M5 Sony Alpha 7R Nikon AF Nikkor 18-35mm f/3.5-4.5D IF ED Canon EF 70-300mm f/4-5.6L IS USM +9 more
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Michael Kilpatrick
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Re: yes...
In reply to Richt2000, Jul 13, 2005

Thanks for the response and the compliment.

Yes, I wondered about just cropping and re-sampling if necessary. Probably wouldn't be worth considering the Kenko if it were not for the 20D's excellent high iso performance.

At 800 or 1600 though, the shutter speed should often be manageable even at F16 if the light is OK.

I took some shots at our zoo duing the w'end at 1600 iso and continue to be amazed at how clean they are.

If the worst comes to the worst, the Kenko is only just over A$200 shipped from Hong Kong (Ebay dealer), and I will at least get something for it if I decide to sell it.

Regards
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Michael Kilpatrick
http://www.pbase.com/mrk03

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