Canon Digital Photography Forums  

Go Back   Canon Digital Photography Forums > 'Equipment Talk' section > Canon EF and EF-S Lenses
Register Rules FAQ Members List Search Today's Posts Mark Forums Read



Reply
 
Thread Tools Display Modes
Old 2nd of October 2008 (Thu)   #1
jdcbgc
Member
 
Join Date: Mar 2006
Location: Oregon
Posts: 151
Default CANON 100-400 LENS

I'm considering buying a canon 1.4 teleconverter for the 100-400 canon lens. Some say it won't work on this lens. Others say it will but you woun't have automatic focus. Which is true? If some of you have this combination I would like to hear what you think of it.
jdcbgc is offline   Reply With Quote
This ad block will go away when you log in as member
Old 2nd of October 2008 (Thu)   #2
Headshotzx
Goldmember
 
Headshotzx's Avatar
 
Join Date: Dec 2007
Location: Singapore
Posts: 4,386
Default Re: CANON 100-400 LENS

Quote:
Originally Posted by jdcbgc View Post
I'm considering buying a canon 1.4 teleconverter for the 100-400 canon lens. Some say it won't work on this lens. Others say it will but you woun't have automatic focus. Which is true? If some of you have this combination I would like to hear what you think of it.
Fact #1: It will be mountable
Fact #2: Autofocus will not work on non-1D or professional film bodies
Fact #3: Autofocus can be tricked into working slowly by taping up the pins.
Fact #4: Image quality will not be that good, considering that 400mm on the lens isn't very good (subjective, ymmv) already.
__________________
Zexun - 21 y.o photographer/film-maker | Flickr | YouTube |
Headshotzx is offline   Reply With Quote
Old 2nd of October 2008 (Thu)   #3
ed rader
"I am not the final word"
 
ed rader's Avatar
 
Join Date: May 2005
Location: silicon valley
Posts: 21,926
Default Re: CANON 100-400 LENS

Quote:
Originally Posted by jdcbgc View Post
I'm considering buying a canon 1.4 teleconverter for the 100-400 canon lens. Some say it won't work on this lens. Others say it will but you woun't have automatic focus. Which is true?If some of you have this combination I would like to hear what you think of it.

i have the lens and the 1d mark III. i don't use it with TC because the IQ isn't to my standards.

ed rader
__________________
Yellowstone September 2014 http://erader.zenfolio.com/p285251459

5D3, SL1, 16-35L f4 IS, 24-70L II, 70-300L, 100-400L, 35f2 IS, 15mm FE (sigma), 270ex II, gitzo, markins, benro
ed rader is offline   Reply With Quote
This ad block will go away when you log in as member
Old 3rd of October 2008 (Fri)   #4
weka2000
Is that a 300mm in your pocket?
 
weka2000's Avatar
 
Join Date: Sep 2005
Location: Auckland
Posts: 20,406
Default Re: CANON 100-400 LENS

Quote:
Originally Posted by Headshotzx View Post
Fact #3: Autofocus can be tricked into working slowly by taping up the pins.
If you use fact #3 remember it can burn out the motor due to the strain of trying to focus.
weka2000 is offline   Reply With Quote
Old 3rd of October 2008 (Fri)   #5
S_Egbert
Member
 
S_Egbert's Avatar
 
Join Date: Feb 2007
Location: Oregon
Posts: 210
Default Re: CANON 100-400 LENS

I have this lens and use it with a Kenko 1.4 converter. With the pins taped it will focus quite well in good light. If it struggles I go to manual focus.
I chose the Kenko because it will fit many more lenses than the Canon due to Canon's protruding element on the front side.

Steve
S_Egbert is offline   Reply With Quote
Old 3rd of October 2008 (Fri)   #6
jsinon
Member
 
Join Date: Jun 2008
Location: Farmington, NH
Posts: 750
Default Re: CANON 100-400 LENS

I get excellent results at 400 with mine, my standards must be too low. I've also seen som e really nice pics posted here taken with a 1.4 added. I personally am thinking of getting one but will stick with manual focus.
__________________
Canon 7D, 17-40L, 70-200 f2.8L(For Sale), Gitzo GT2541 with Acratech Ultimate ballhead.
http://www.jeffsinon.com/
http://jeffsinonphotography.wordpress.com/
jsinon is offline   Reply With Quote
Old 3rd of October 2008 (Fri)   #7
johnz
Member
 
johnz's Avatar
 
Join Date: Sep 2006
Location: Tampere, Finland
Posts: 528
Default Re: CANON 100-400 LENS

I have the 1.5x TC from Kenko, the center focus point does not work but other do, but they require a lot of light and contrast.

Here's a few sample moon shot, same amount of sharpening in all of them.

100-400L @ 390mm NO TC


100-400L @ 400mm with 1.5X TC
I think this sample proves that you can get more detail in your image with a tc, even though it does make the image softer.


And this is the Field of view difference with and without a tc.
__________________
- Tuomas Gustafsson
My smugmug - ( still on the works )
My gear list / DOF calculator for Nokia phones
With Canon you can... spend all your money on glass.

Last edited by johnz : 3rd of October 2008 (Fri) at 05:15.
johnz is offline   Reply With Quote
Old 3rd of October 2008 (Fri)   #8
jdcbgc
Member
 
Join Date: Mar 2006
Location: Oregon
Posts: 151
Default Re: CANON 100-400 LENS

Thanks, I think I could live with the manual focus. Still not sure about the image quality. I like a pretty sharp picture also. If any one would care to post some more pictures with this combination I would like to see them.
jdcbgc is offline   Reply With Quote
Old 3rd of October 2008 (Fri)   #9
rdricks
Member
 
rdricks's Avatar
 
Join Date: Aug 2006
Location: Silicon Valley
Posts: 516
Default Re: CANON 100-400 LENS

I use the combination sometimes. I don't mind the manual focus. But there is definitely image degradation. If I really need the length I add it, but only if I need that extra length.

Here is a shot with the combination. It is allright, but if you look closely it is not as sharp as it could be, definitely not as sharp as it would have been without the converter.

__________________
-Ryan
Perspicacious Words
rdricks is offline   Reply With Quote
Old 3rd of October 2008 (Fri)   #10
Heffe
Member
 
Join Date: Jun 2008
Location: Connecticut USA
Posts: 222
Default Re: CANON 100-400 LENS

Mr UPS is on the way with one to my door today. I will take some pics today and see how it goes.
__________________
Jeff*
40D, 100 f2.8 Macro, 17-40 f4L, 100-400 4.5-5.6L IS
http://gallery.me.com/jeffreyheatherstairs#gallery
Heffe is offline   Reply With Quote
Old 3rd of October 2008 (Fri)   #11
liquidstone
insane Bird photographer
 
liquidstone's Avatar
 
Join Date: Dec 2005
Posts: 1,063
Default Re: CANON 100-400 LENS

Quote:
Originally Posted by Headshotzx View Post
Fact #4: Image quality will not be that good, considering that 400mm on the lens isn't very good (subjective, ymmv) already.
"considering that 400mm on the lens isn't very good (subjective, ymmv) already."



This was taken with a 1DM2 + 100-400 at 400 mm, wide open and hand held. I've printed it to 20"x30" for a museum exhibit, and feather detail is still very good when seen from 10 inches away. I won't hesitate to print it to 24"x36" if necessary.

Processed 100% crop (EXIF intact):







Here's the 20"x30" print on the museum wall (the smaller ones are 12"x15"):






For a sense of scale, here are other 12"x15" photos being mounted in the same museum exhibit:

__________________
Romy Ocon, Philippine Wild Birds
Over 260 species captured in habitat, and counting.

Looooong Lens Imaging (1000 mm and beyond)
liquidstone is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Canon 100-400 IS lens ps249 Canon EF and EF-S Lenses 24 14th of December 2007 (Fri) 12:48
CANON 100-400 LENS jdcbgc Canon EF and EF-S Lenses 117 2nd of December 2006 (Sat) 11:38
Telephoto Lens Advice - Sigma 100-300 Canon 100-400 BigBlueDodge Canon EF and EF-S Lenses 15 8th of February 2006 (Wed) 14:03


All times are GMT -5. The time now is 10:25.


Powered by vBulletin® Version 3.6.12
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
This forum is not affiliated with Canon in any way and is run as a free user helpsite by Pekka Saarinen, Helsinki Finland. You will need to register in order to be able to post messages. Cookies are required for registering and posting. HTML in messages is not allowed, plain website addresses are automatically made active by the board.