Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and our Privacy Policy.
OK
Index  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Guest
New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Register to forums    Log in

 
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 26 Nov 2013 (Tuesday) 23:02
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

Extender for Canon EF 70-300mm f/4-5.6 IS USM Lens?

 
TheIVJackal
Member
Avatar
42 posts
Joined Jan 2013
Location: Santa Barbara
     
Nov 26, 2013 23:02 |  #1

I'd like to have some extra reach with my camera, I like to take pictures of surfers. From what i've read, neither of the Canon extenders are compatible with my lens. Are there any out there that are compatible? That will allow me to keep my AF? Thanks!
- Aaron


Freedom Through Jesus :)

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)
I ­ Love ­ Cats
Senior Member
269 posts
Joined Nov 2013
     
Nov 27, 2013 00:10 |  #2
bannedPermanent ban

I used to own that lens. Not trying to be rude, but the that lens can't stand up to TCs. The IQ at 300mm isn't much to speak of to start with. Putting a TC on it will just make it worse. You'd be much better off with a 100-400L, 400 5.6L or one of the long Sigma zooms. All of those option are much more expensive. If you want a less expensive solution, look at the SX50IS.




  
  LOG IN TO REPLY
WilliamC
Member
41 posts
Joined Sep 2011
Location: Northants, UK
     
Nov 27, 2013 00:21 |  #3

You can if you want put a Kenko 1.4 DGX TC on it but you'll most likely be a bit disappointed. It does work but unreliably, it'll AF sometimes but it'll spend most of its time hunting. I tried it and it wasn't really worth it.


William
EOS 7D, EF 400mm f/4 DO, EF 70-300L, Sigma 17-70 OS 2.8-4, Canon 50mm f1.8, Canon 60mm macro

  
  LOG IN TO REPLY
TheIVJackal
THREAD ­ STARTER
Member
Avatar
42 posts
Joined Jan 2013
Location: Santa Barbara
     
Nov 27, 2013 00:46 |  #4

Definitely trying to find a budget conscious solution so and L-Series out of the question for now.


Freedom Through Jesus :)

  
  LOG IN TO REPLY
kin2son
Goldmember
4,546 posts
Likes: 3
Joined May 2011
Location: Sydney, Australia
     
Nov 27, 2013 00:54 |  #5
bannedPermanent ban

TheIVJackal wrote in post #16483062 (external link)
Definitely trying to find a budget conscious solution so and L-Series out of the question for now.

Then stick with 300mm, get as close to the action as possible then crop.


5D3 Gripped / 17-40L / Σ35 / 40 Pancake / Zeiss 50 MP / Σ85 / 100L Macro / 70-200 f2.8L II IS / 430 EX II / 580 EX II / Canon 2xIII TC / Kenko Ext. Tubes
EOS M / EF-M 18-55 / EF-M 22f2 / Ricoh GR aka Ultimate street camera :p
Flickr (external link) | My Images on Getty®‎ (external link)

  
  LOG IN TO REPLY
TheIVJackal
THREAD ­ STARTER
Member
Avatar
42 posts
Joined Jan 2013
Location: Santa Barbara
     
Nov 27, 2013 01:30 |  #6

Yea, that's what i've been doing but also why I made this thread. Seeing if there is anything out there.


Freedom Through Jesus :)

  
  LOG IN TO REPLY
Nick_Reading.UK
Senior Member
Avatar
836 posts
Likes: 1
Joined Nov 2011
Location: Reading, Berkshire, UK
     
Nov 27, 2013 01:46 |  #7

I Love Cats wrote in post #16483020 (external link)
I used to own that lens. Not trying to be rude, but the that lens can't stand up to TCs. The IQ at 300mm isn't much to speak of to start with. Putting a TC on it will just make it worse. You'd be much better off with a 100-400L, 400 5.6L or one of the long Sigma zooms. All of those option are much more expensive. If you want a less expensive solution, look at the SX50IS.

I agree, I used to own this lens and went through 2 copies.. The biggest waste of time and money EVER !!

TheIVJackal wrote in post #16483062 (external link)
Definitely trying to find a budget conscious solution so and L-Series out of the question for now.

sell it save up some cash and get the 100-400


EOS 5Dmk3 X2, 60D, EF24-70mm f2.8L mk2, EF70-200mm f2.8L IS mk2, EF85mm f1.8, EF50mm f1.4, EF50mm f1.8 mk1(350D with 18-55mm Sh"kit" lens).
Speedlite 600EX-RT, 430EX II Flash. manfrotto 190XDB tripod, Giottos GTMML 3290B Monopod, B+W 77mm 110 Single Coated filter, Hama 77mm Variable Neutral Density Filter.

  
  LOG IN TO REPLY
I ­ Love ­ Cats
Senior Member
269 posts
Joined Nov 2013
     
Nov 27, 2013 05:07 |  #8
bannedPermanent ban

I am going to go out on a limb here. Most surfing is done in broad daylight. The SX50HS would get you 1200mm (please, use a tripod) and perform adequately in very good lighting. My guess is that it would give your better shots than the 70-300 with a TC. A 600 f/4 IS II, it ain't. But it may suffice, and it is inexpensive compared to any 400mm+ lens.

The Panasonic DMC-FZ200 is a bit more expensive, but it is f/2.8 at 600mm. That can't hurt.




  
  LOG IN TO REPLY
hennie
Goldmember
1,246 posts
Gallery: 23 photos
Likes: 58
Joined Oct 2007
Location: Spijkenisse, The Netherlands
     
Nov 27, 2013 05:40 |  #9

I have used the 70-300 non L with a 1.4 kenko extender.
On the long end AF does not work with the TC unless in very bright sunlight, I did not find that a problem for very distant subjects, manual focussing sufficed.
Sharpness and contrast at the long end were not very bad, but not very much better than cropping.
I do not agree that this lens without a TC is crap at 300mm, be4 the 70-300L appeared it was regarded as a secret L lens and I very much liked it.
I have replaced it with a Tammy 70-200 2.8 VC wich is more suitable for my current use, that one also takes my TC much better giving me a usable 70-280 2.8/4 lens.




  
  LOG IN TO REPLY
I ­ Love ­ Cats
Senior Member
269 posts
Joined Nov 2013
     
Nov 27, 2013 08:39 |  #10
bannedPermanent ban

Hennie,
I did not mean to suggest that the 70-300 is crap. It is quite good at focal lengths shorter than about 275. It also decent at 300mm if you stop down to f/8. At f/5.6 and 300mm the lens is soft, even in the center, and lacks contrast that it clearly does have at shorter focal lengths. If one mounts this lens to a 1.4 TC and shoots it at 300mm and f/5.6 (f/8 w/TC) it will perform poorly. It can be improved a bit by stopping down to f/8 (f/11 w/TC). That is going to push shutter speed down, or require high ISO, both of which will negatively impact the resulting image.

I agree with you that some people have proclaimed this lens a hidden L. One of two things fall out of that observation. They are either delusional, or have never shot an L lens. I used the 70-300 on an XSi, T1i, 60D, 5D and an Elan 7 film body. It performed equally, as stated above, on all of them. I do not have extensive experience with L-lenses. I currently own a 100-400L, and in the past have owned a 135L and a 200 2.8L. All three of the L-lenses I have experience with are hands-down superior to the 70-300 in every conceivable way, except price. The 70-300 is a good consumer-grade lens, that falls apart at 300mm, especially wide open. To my knowledge it has never been referred to as a hidden L by anyone who has actually used an L-lens.

I just sold a 55-250 that was better at 250 f/5.6 than the 70-300 was at 300 f/8. The OP would be better served by spending $100 on a used 55-250 and cropping than by adding a 1.4x TC to his 70-300.




  
  LOG IN TO REPLY
Eastport
Senior Member
Avatar
940 posts
Gallery: 1 photo
Likes: 46
Joined Apr 2009
     
Nov 27, 2013 09:56 |  #11

I Love Cats wrote in post #16483631 (external link)
Hennie,
I did not mean to suggest that the 70-300 is crap. It is quite good at focal lengths shorter than about 275. It also decent at 300mm if you stop down to f/8.

I agree. And I have never heard it was as good as any L lens but, under the right conditions (f/8 being one of them; good light being another; still shots being a third requirement...well, surfers would be quite the challenge), it can be sharp edge to edge at 300mm.

Having used it side by side against the the non-STM 55-250, my results were better with the 70-300. And TDP shows it (the non-L 70-300) to be marginally superior to the Tamron 70-300 (on full frame - that is; no testing of the Tamron on crop)).

Is it worth its list price? No way. But if you can get it for $275 (not so hard to do), it's worth the extra money over the non-STM 55-250.

Would I put an extender on it? Not a chance. And, of course, the Canon extender won't work with it anyway.

I shoot it mostly from 250 to 300mm. Why have it otherwise? As long as you know its limitations (the same as any of the consumer long zooms), you will be happy with it.

Sorry to hear some of the responders maybe had bad copies (or maybe I have a good copy...).

It's also much better on full frame than on crop. Of course, the 55-250 models (none of them) won't work on full frame.




  
  LOG IN TO REPLY
I ­ Love ­ Cats
Senior Member
269 posts
Joined Nov 2013
     
Nov 27, 2013 10:16 |  #12
bannedPermanent ban

I defer to Eastport on the comparison between the 55-250 and the 70-300. I never shot them together; I didn't own them together. My opinion may have been tempered by the fact that I bought the 70-300 new for $539, I believe. I bought the 55-250 used for $115. Of the two, I found the 55-250 a better value for the money.




  
  LOG IN TO REPLY
amfoto1
Cream of the Crop
10,251 posts
Likes: 82
Joined Aug 2007
Location: San Jose, California
     
Nov 27, 2013 10:32 |  #13

OP,

If you can find an older "DG" copy of the Kenko Pro 300 1.4X (i.e., not the current DGX), it would be your best bet and should at least try to autofocus on your lens even at 300mm. This earlier version isn't "recognized" by the camera (if you look at the EXIF, it will only say "300mm", not "420mm")... so this allows the camera to at least try to focus. Likely it will be slower and hunt sometimes, but that depends upon the lighting conditions and contrast of the subject.

Alternatively, you might be able to get other 1.4X to try to focus by taping up some of the electronic contacts, fooling the camera into not knowing it's there. If you want to try this, Google for info on which contacts to tape over.

It's anyone's guess, whether or not the image quality will be acceptible to you. You'll just have to try it and see.

Limit your camera to using only the center AF point, too, while using the TC. That will likely help.

Forget about the Canon Extenders. They all have a protruding front element that fits inside the rear of the lens, so will not even physically fit onto your zoom. The only Canon zooms they'll fit onto are the 70-200s and the 100-400 (not really recommended for the later, though).

You probably also should forget about using any 2X. Too much light loss and image quality will likely be too heavily degraded, as well.


Alan Myers (external link) "Walk softly and carry a big lens."
5DII, 7DII(x2), 7D(x2) & other cameras. 10-22mm, Tokina 12-24/4, 20/2.8, TS 24/3.5L, 24-70/2.8L, 28/1.8, 28-135 IS (x2), TS 45/2.8, 50/1.4, Tamron 60/2.0, 70-200/4L IS, 70-200/2.8 IS, 85/1.8, Tamron 90/2.5 Macro, 100/2.8 USM, 100-400L II, 135/2L, 180/3.5L, 300/4L IS (x2), 300/2.8L IS, 500/4L IS, EF 1.4X II, EF 2X II. Flashes, studio strobes & various access. - FLICKR (external link) - ZENFOLIO (external link)

  
  LOG IN TO REPLY
TheIVJackal
THREAD ­ STARTER
Member
Avatar
42 posts
Joined Jan 2013
Location: Santa Barbara
     
Nov 27, 2013 14:25 |  #14

amfoto1 wrote in post #16483899 (external link)
OP,

If you can find an older "DG" copy of the Kenko Pro 300 1.4X (i.e., not the current DGX), it would be your best bet and should at least try to autofocus on your lens even at 300mm. This earlier version isn't "recognized" by the camera (if you look at the EXIF, it will only say "300mm", not "420mm")... so this allows the camera to at least try to focus. Likely it will be slower and hunt sometimes, but that depends upon the lighting conditions and contrast of the subject.

Alternatively, you might be able to get other 1.4X to try to focus by taping up some of the electronic contacts, fooling the camera into not knowing it's there. If you want to try this, Google for info on which contacts to tape over.

It's anyone's guess, whether or not the image quality will be acceptible to you. You'll just have to try it and see.

Limit your camera to using only the center AF point, too, while using the TC. That will likely help.

Forget about the Canon Extenders. They all have a protruding front element that fits inside the rear of the lens, so will not even physically fit onto your zoom. The only Canon zooms they'll fit onto are the 70-200s and the 100-400 (not really recommended for the later, though).

You probably also should forget about using any 2X. Too much light loss and image quality will likely be too heavily degraded, as well.

Thanks, this is what I was looking for. I'll read more into that Kenko product.
Happy Thanksgiving!


Freedom Through Jesus :)

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)

5,424 views & 0 likes for this thread
Extender for Canon EF 70-300mm f/4-5.6 IS USM Lens?
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
AAA
x 1600
y 1600

Jump to forum...   •  Rules   •  Index   •  New posts   •  RTAT   •  'Best of'   •  Gallery   •  Gear   •  Reviews   •  Member list   •  Polls   •  Image rules   •  Search   •  Password reset

Not a member yet?
Register to forums
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!


COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and to our privacy policy.
Privacy policy and cookie usage info.


POWERED BY AMASS forum software 2.1forum software
version 2.1 /
code and design
by Pekka Saarinen ©
for photography-on-the.net

Latest registered member is patton1776
441 guests, 316 members online
Simultaneous users record so far is 15144, that happened on Nov 22, 2018

Photography-on-the.net Digital Photography Forums is the website for photographers and all who love great photos, camera and post processing techniques, gear talk, discussion and sharing. Professionals, hobbyists, newbies and those who don't even own a camera -- all are welcome regardless of skill, favourite brand, gear, gender or age. Registering and usage is free.