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 17 Dec 2014 (Wednesday) 10:12
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

EF 100-400mm f/4.5-5.6L IS II USM Review WOW!

 
LonelyBoy
Goldmember
1,431 posts
Gallery: 71 photos
Likes: 839
Joined Oct 2014
     
Jun 01, 2017 11:12 |  #6046

Pondrader wrote in post #18368317 (external link)
What makes you think it would need to be twice as big as a 1200mm, The Sigma can do 600mm in a lens a bit bigger than a 100-400mm ?? Ok so I did forget about the f2 part of my problem.. but thats up to the geniuses of the world... Not me. I just do the wanting
thumbnail
Hosted photo: posted by Pondrader in
./showthread.php?p=183​68317&i=i189571479
forum: Canon EF and EF-S Lenses

Exactly, it's not mostly (or even primarily) about focal length; it's about the size of the front element.

1200/5.6 = 214 (roughly)
800/2 = 400

The front element is almost twice as big across, which also means that much thicker and MUCH more than twice as heavy. Think of the difference between the 400/5.6 and the 400/2.8. That difference is two stops. An 800/2 is equivalent in front element to a 400/1, which is a whole three stops bigger than the 400/2.8.

I stand by my statement on the size of such a lens!  :p


https://www.flickr.com​/photos/127590681@N03/ (external link)
I love a like, but feedback (including CC) is even better!

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)
Pondrader
"now I'm no rocket scientist but I do get a shot or two"
Avatar
16,028 posts
Gallery: 2548 photos
Best ofs: 5
Likes: 56795
Joined Aug 2012
Location: Minden, Ontario, Canada
     
Jun 01, 2017 11:16 |  #6047

LonelyBoy wrote in post #18368340 (external link)
Exactly, it's not mostly (or even primarily) about focal length; it's about the size of the front element.

1200/5.6 = 214 (roughly)
800/2 = 400

The front element is almost twice as big across, which also means that much thicker and MUCH more than twice as heavy. Think of the difference between the 400/5.6 and the 400/2.8. That difference is two stops. An 800/2 is equivalent in front element to a 400/1, which is a whole three stops bigger than the 400/2.8.

I stand by my statement on the size of such a lens!  :p

Theres nothing to stand on,.. In the dream world all things are equal Just sayin


Jeff ........, 7D, 70-300L, 100-400LII
flickr (external link)

  
  LOG IN TO REPLY
LonelyBoy
Goldmember
1,431 posts
Gallery: 71 photos
Likes: 839
Joined Oct 2014
     
Jun 01, 2017 11:17 |  #6048

Pondrader wrote in post #18368343 (external link)
Theres nothing to stand on,.. In the dream world all things are equal Just sayin

I always take things too literally...


https://www.flickr.com​/photos/127590681@N03/ (external link)
I love a like, but feedback (including CC) is even better!

  
  LOG IN TO REPLY
Pondrader
"now I'm no rocket scientist but I do get a shot or two"
Avatar
16,028 posts
Gallery: 2548 photos
Best ofs: 5
Likes: 56795
Joined Aug 2012
Location: Minden, Ontario, Canada
Post edited over 2 years ago by Pondrader.
     
Jun 01, 2017 11:24 |  #6049

LonelyBoy wrote in post #18368345 (external link)
I always take things too literally...

I just want to shoot in the dark lol Last night across the pond from my house in fading light needed the bigger hole as there was a sow with three cubs and I wanted better than the 100-400LII could deliver. period


HOSTED PHOTO
please log in to view hosted photos in full size.


HOSTED PHOTO
please log in to view hosted photos in full size.


Jeff ........, 7D, 70-300L, 100-400LII
flickr (external link)

  
  LOG IN TO REPLY
CyberDyneSystems
THREAD ­ STARTER
Admin (type T-2000)
Avatar
49,594 posts
Gallery: 160 photos
Likes: 6200
Joined Apr 2003
Location: Rhode Island USA
     
Jun 01, 2017 23:24 |  #6050

LonelyBoy wrote in post #18368340 (external link)
Exactly, it's not mostly (or even primarily) about focal length; it's about the size of the front element.

1200/5.6 = 214 (roughly)
800/2 = 400

 :p

400mm! (ish) That's big :)


GEAR LIST
CDS' HOT LINKS
Jake Hegnauer Photography (external link)

  
  LOG IN TO REPLY
CyberDyneSystems
THREAD ­ STARTER
Admin (type T-2000)
Avatar
49,594 posts
Gallery: 160 photos
Likes: 6200
Joined Apr 2003
Location: Rhode Island USA
     
Jun 01, 2017 23:36 |  #6051

Thank you all for the well wishing. I guess I did not intend fro this thread to get so O.T. there, but I truly appreciate the kind words at this difficult time.


GEAR LIST
CDS' HOT LINKS
Jake Hegnauer Photography (external link)

  
  LOG IN TO REPLY
Douglas ­ Conway
Senior Member
284 posts
Gallery: 60 photos
Likes: 640
Joined Aug 2012
     
Jun 02, 2017 21:38 |  #6052

Off track but I know that a lot of you have a 1.4 extender. I bought a new one today and auto focus will not work. Its with a 6d and 100-400 f/4.5-5.6 is 11. I called the dealer and will try and get it back to them tomorrow.
Anyone else have this issue.


Ybnormel

  
  LOG IN TO REPLY
mike_d
Cream of the Crop
Avatar
5,295 posts
Gallery: 1 photo
Likes: 509
Joined Aug 2009
     
Jun 02, 2017 21:41 as a reply to  @ Douglas Conway's post |  #6053

If the 6d won't autofocus at f/8, you're out of luck. I don't believe my original 5D would. Even the 5D3 can only AF with the center point with the 1.4x installed.




  
  LOG IN TO REPLY
GAJoe
Senior Member
Avatar
336 posts
Gallery: 10 photos
Likes: 1028
Joined Jul 2008
Location: North Georgia, USA
     
Jun 02, 2017 21:51 |  #6054

He musta got some bad seed:lol:


HOSTED PHOTO
please log in to view hosted photos in full size.


HOSTED PHOTO
please log in to view hosted photos in full size.


Canon 7D Mk II, EF 100-400L MkII, EF 1.4X III, EF-S 18-135mm STM, 430 EX II flash, DCR-150, DCR-250, MANFROTTO 055XPROB w/ 322RC Grip

  
  LOG IN TO REPLY
Lbsimon
...never exercised in my life
Avatar
2,667 posts
Gallery: 19 photos
Likes: 265
Joined Jan 2011
Location: Boston, MA
Post edited over 1 year ago by Lbsimon.
     
Jun 03, 2017 12:17 |  #6055

Douglas Conway wrote in post #18369624 (external link)
Off track but I know that a lot of you have a 1.4 extender. I bought a new one today and auto focus will not work. Its with a 6d and 100-400 f/4.5-5.6 is 11. I called the dealer and will try and get it back to them tomorrow.
Anyone else have this issue.

The 6D will not autofocus with Canon TCs, either 1.4x or 2x. Only manual focus possible. Here on POTN you may find tricks how to tape some pins on the TC to make it (kind of) work, but it does not work very well. I tried other TC's by Kenko and Tamron. They work, but unreliably, and only whe the light is very bright. I had to ditch them all.

I used to have a 70DII until recently - that one auto focused only with a center point or assisted center point focus. The 5DIV that I have now focuses with all focus points. Pro cameras do it too. But not 6D.


5D Mark IV | 6D | S110
EF 17-40L | EF 24-105L (two) | EF 70-200L F4 IS | EF 100-400L II | EF 85 1.8 | EF 50 1.8 STM | Canon 1.4x III | Canon 1.4x II
Yongnuo 685 | Nissin Di622 M2 | Nissin Di422

  
  LOG IN TO REPLY
GAJoe
Senior Member
Avatar
336 posts
Gallery: 10 photos
Likes: 1028
Joined Jul 2008
Location: North Georgia, USA
     
Jun 03, 2017 15:06 |  #6056

Got my MFA tweeked last evening and headed to the lake this morning. Blooms have begun falling from a trumpet vine in an old tree that leans over the lake. It reminded me that I had seen a hummer at a trumpet vine earlier in the week so I went over to take a look. Sure enough the hummer was there. Those little guys are hard to photograph when in stead of one feeder located where you plan to stand in the shade there's a hundred blooms scattered all over the tree and the wind blowing my boat, the sun beating down on the back of my neck. It was typically about a thirty feet shot give or take.


HOSTED PHOTO
please log in to view hosted photos in full size.


HOSTED PHOTO
please log in to view hosted photos in full size.


Canon 7D Mk II, EF 100-400L MkII, EF 1.4X III, EF-S 18-135mm STM, 430 EX II flash, DCR-150, DCR-250, MANFROTTO 055XPROB w/ 322RC Grip

  
  LOG IN TO REPLY
Bianchi
Cream of the Crop
Avatar
5,747 posts
Gallery: 54 photos
Best ofs: 2
Likes: 5977
Joined Jan 2010
Location: USA
     
Jun 03, 2017 21:21 |  #6057

7DII + 1.4II


HOSTED PHOTO
please log in to view hosted photos in full size.


My Gear flickr (external link)

  
  LOG IN TO REPLY
edmidlifecrisis
Goldmember
Avatar
3,311 posts
Gallery: 175 photos
Best ofs: 2
Likes: 21467
Joined Jun 2014
Location: Palm Beach County, FL
Post edited over 1 year ago by edmidlifecrisis.
     
Jun 04, 2017 15:57 |  #6058

Douglas Conway wrote in post #18369624 (external link)
Off track but I know that a lot of you have a 1.4 extender. I bought a new one today and auto focus will not work. Its with a 6d and 100-400 f/4.5-5.6 is 11. I called the dealer and will try and get it back to them tomorrow.
Anyone else have this issue.

You are out of luck. It is intrinsic to the 6d no af at f8. I have the same combo. No go.


Ed
https://www.sandhillim​ages.com/ (external link)
https://www.flickr.com​/photos/127634200@N05/ (external link)
https://500px.com/edtl (external link)
Instagram @elsdvm90

  
  LOG IN TO REPLY
Douglas ­ Conway
Senior Member
284 posts
Gallery: 60 photos
Likes: 640
Joined Aug 2012
     
Jun 05, 2017 18:05 as a reply to  @ edmidlifecrisis's post |  #6059

I'm going to try a firmware upgrade and see if that works. Thanks for the reply.


Ybnormel

  
  LOG IN TO REPLY
sploo
premature adulation
2,409 posts
Gallery: 1 photo
Likes: 463
Joined Nov 2011
Location: West Yorkshire, UK
     
Jun 06, 2017 02:46 |  #6060

Douglas Conway wrote in post #18371828 (external link)
I'm going to try a firmware upgrade and see if that works. Thanks for the reply.

As far as I'm aware there's no way to (officially) get the 6D to AF at f/8 with any points. The hardware may be capable of it (the 5D3 was released without that feature, and it was added later in firmware) but it's entirely possible the AF hardware in the 6D couldn't do it - regardless of the firmware.

You can AF with TCs on a 6D; you just need a combination that keeps you at f/5.6 max; i.e. an f/4 lens with a 1.4x TC or an f/2.8 (or faster) with a 2x TC.


Camera, some lenses, too little time, too little talent

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

2,745,124 views & 31,450 likes for this thread
EF 100-400mm f/4.5-5.6L IS II USM Review WOW!
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 achamb7
842 guests, 261 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.