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Old Sunday 22nd July 2007, 11:25   #1
TobiasK
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Canon 100-400 and Kenko 1,4 - nice !!!

Hi
a few weeks ago i replaced the 400/5,6 with the 100-400, although everybody i know said, the quality would decrease
So, here are some pics taken with 350D (Rebel XT), 100-400, 1/2,5 and 1/125,
1,4 Kenko 300 DG Pro, Berlebach Tripod

Hope you like them:

http://img530.imageshack.us/img530/6...ilteredeo1.jpg
http://img507.imageshack.us/img507/6...ilteredqp1.jpg
http://img522.imageshack.us/img522/2...ilteredtr0.jpg
http://img522.imageshack.us/img522/3...ilteredvo4.jpg
http://img529.imageshack.us/img529/4...ilteredzn2.jpg
http://img352.imageshack.us/img352/3...opfkleiwb2.jpg

http://img248.imageshack.us/img248/5...itsfotoff9.jpg


Bye
Tobias
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Old Sunday 22nd July 2007, 12:52   #2
Keith Reeder
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It just goes to show that "everbody" can't always be trusted, Tobias!

Your pictures are excellent, and the image quality is wonderful.

I use the same lens/TC combination - hand-held - and I love it.
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Old Monday 23rd July 2007, 21:46   #3
erwinx
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I am never sure how helpful web-sized post-processed pics are in evaluating image quality, but here's a shot taken with an ancient Canon D60 with 300 f/4 + 1.4x + 2x (stacked converters) tracking a moving Egret via manual focus.

personally, I can't see a difference between the web-size image quality of my attached shot and the 100-400 + TC shots. Does this mean the 300 f/4 is better (since I used stacked converters)
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Old Monday 23rd July 2007, 21:56   #4
Keith Reeder
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Well I would have said that by definition you've just proven that it's no better, Erwin!

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Old Sunday 29th July 2007, 08:10   #5
Cashie
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Question

The shots are excellent Tobias

I am thinking of getting one of these converters for my 100-400 as I dont want tape on my canon converter because I use it with my 500 f4 and it doesn't need taping with that lens.

Do you still have to tape the Kenko when using it with the 100-400 ?

Paul
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Old Sunday 29th July 2007, 09:06   #6
TobiasK
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Hi,
yes, still have to
but you can also tape the contacts on the lens (100-400) if you will use it with the kenko all the time
so the kenko is "free" (untapped) for the 500/4

bye
Tobias
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Old Sunday 29th July 2007, 17:46   #7
TobiasK
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Hi,
here some more pics
350D, 100-400 + 1,4 Kenko
no tripod

http://img257.imageshack.us/img257/9...ilteredjo9.jpg
http://img406.imageshack.us/img406/4...lfertigpa9.jpg

and how it was done:
as the storks were standing on a flat are, i had to creep to them ;-)
my clothes were all wet, but it was worth it
the final distance was about 10 meters (30 feet ?)

http://img404.imageshack.us/img404/7716/storchafqr9.jpg

Bye
Tobias

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Old Sunday 29th July 2007, 18:31   #8
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have to say they are as good as you could wish for with any lens the close distance played a part but im quite stunned at the IQ of these with the combo used .
Rob.
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Old Sunday 29th July 2007, 21:37   #9
Al livsey
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Well done Tobias, nice photos, and a good bit of stalking.
I'm hoping to buy the Canon 1.4 TC with the same set up as you, next week, (pay day).

Alan.
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Old Monday 30th July 2007, 15:43   #10
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Hi Alan,
i would not buy the Canon 1,4 but the Kenko
there was a comparison here:
http://www.traumflieger.de/desktop/t...est2_teil4.php

the kenko did win !

Bye
Tobias
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Old Monday 30th July 2007, 15:49   #11
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Well, you should never judge the quality of the picture from the web-sized post-processed pics! The only relevant comparison is the original size, or for the web, 100% crop from one part of the pics.
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Old Monday 30th July 2007, 17:51   #12
Keith Reeder
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Nope, I don't really agree, Mil.

If the intended use for pictures is primarily the internet - and I know lots of photographers who rarely if ever print, and for whom the internet is their primary outlet - then I think it is entirely reasonable to consider the pictures at "internet sizes".
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Old Monday 30th July 2007, 18:14   #13
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No problem,
here is a 100% crop, not sharpened, out of the cam
350D, 100-400 + 1,4 Kenko
http://img108.imageshack.us/img108/7...chwalbewt6.jpg

Bye
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Old Monday 30th July 2007, 23:59   #14
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lovely photos Tobias. I too have the same kit, 30D, 100-400mm IS and kenko 1.4tc. However all the best gear in the world means nothing without a bit of technique, take a bow Keith Reeder. I've followed Keith's advice about holding the camera and focusing on the eye and what a difference. A couple of pics attached. nothing special but a vast improvement for me! both handheld,
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Old Wednesday 10th October 2007, 07:41   #15
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Keith, for the internet I agree of course.
Tobias, thanks! It look great, I dont think that you lose quality.

Best,
Mil
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Old Thursday 11th October 2007, 15:28   #16
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Quote:
Originally Posted by TobiasK View Post
Hi Alan,
i would not buy the Canon 1,4 but the Kenko
there was a comparison here:
http://www.traumflieger.de/desktop/t...est2_teil4.php

the kenko did win !

Bye
Tobias
I have found a test showing the opposite result, that the Canon Extender is the better. So maybe we have to take such testing with a grain of salt....

Link
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Old Saturday 13th October 2007, 20:49   #17
tjsimonsen
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Finally some sunshine in Edmonton!
So I have tried my new Kenko 1.4 pro 300 DG with my trusted 100-400 and Rebel XT. Unfortunately, I'm to busy today to go birding, but the wall of the next-door house at least gave me the possibility to do a comparative test. I tested the naked lens and the lens with TC and taped pins @ 400 and all appatures between f5.6 and f8.0 on a tripod with IS off. I took five pics at each appature and chose the best for comparisons. I did not use timer or mirror lock-up as I don't use these in real-life shooting.

The results surprised me quite a bit:
1: There is apparently no detectable difference in centre sharpness between f5.6 and f8 on the naked lens! I was my subjective oppinion that it was a bit sharper @ f8 (and it is IMO pretty darn sharp at that appature). The extreme corners are marginally sharper @ f8 though.
2: From f6.3 and onwards there is very little (if any) loss in IQ when the TC is added. At least in the centre. The borders need f8 to be really good.
3: With the TC in IS works most of the time! It does behave erratic occasionally though, and often enough for me not to use it when I don't have to (i.e. have my mono- or tripod handy).

I'll post some pics when I have something more interesting than a brick wall to show.

Thomas
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