Linked Questions

6 votes
4 answers
4k views

Will I not be able to AF with a 2× teleconverter?

My setup is a Canon EOS 600D with a Canon EF 70-200mm f/4 L (non-IS), and I really want to buy a 2× teleconverter (1.4× is too short). I have done a lot of research, but I can't wrap my head around ...
Tindra's user avatar
  • 812
6 votes
5 answers
4k views

Why does the autofocus capability depend on the aperture rather than the amount of light available?

In many DSLR manuals one can read something to the effect of: Maximum Lens Aperture: f/3.2 - f/5.6 With all AF points, cross-type AF sensitive to both vertical and horizontal lines is ...
JonathanReez's user avatar
  • 2,976
0 votes
7 answers
29k views

Choosing between Lenses Canon 70-200 f2.8L IS II vs Canon EF 70-300mm f/4-5.6L IS USM

I am considering between these 2 telephoto lenses but I cannot make up my mind on which one to buy. I have read a lot about the pro's and con's of both these lenses.. For example 70-200 f2.8 IS II ...
Fraiser's user avatar
  • 21
10 votes
3 answers
15k views

How to enable Canon AF with teleconverter?

Canon DSLR bodies prevent poor auto-focus performance by disabling it completely when the lens reports maximum aperture at chosen focal length smaller than f/5.6. This implies that some lenses will ...
Imre's user avatar
  • 32k
2 votes
2 answers
19k views

Can I use an Canon 2x Extender on my EF-S 18-135mm lens?

I want to get into taking more bird images, and am on a very limited budget. I am wondering if I can use the Canon 2x Extender on my Rebel T4i camera's EF-S 18-135 kit lens. If so what sort of price ...
Deborah's user avatar
  • 21
3 votes
1 answer
1k views

Pictures of surfers start in focus then go out of focus?

I was recently shooting some surfers after a session with my 7D and Tamron 18-270mm F/3.5-6.3 Di II VC PZD. I started shooting while he was in focus, then as he got to the main part of the maneuver ...
Cole Y's user avatar
  • 31
1 vote
4 answers
1k views

Should I use automatic focus or manual focus for bird photography?

I have a Canon Rebel XTi and some decent lenses. I am considering getting a 500-1000mm f/8 telephoto zoom lens. For photographing birds that are 25-100m away, should I use an automatic focus or a ...
AdrienDaBoss's user avatar
5 votes
2 answers
3k views

Will a lens extender be helpful for wildlife photography with a 70-200mm lens and APS-C sensor?

I was planning to do some photography with wildlife and was planning to sell my Canon Mrk2 70-200mm lens. However after discussing this I've been told that it's actually a good lens for wildlife (or ...
Matthew's user avatar
  • 366
1 vote
2 answers
2k views

Will my camera autofocus over the full range of a telephoto lens with variable aperture?

I'm looking to get a Sigma 150-500mm f/5-6.3 for my Nikon D3300. I've been trying to wrap my head around the crop factor and how that works and how it affects auto focus. Spec sheet for my D3300 say ...
wildlifephotog's user avatar
0 votes
2 answers
2k views

Teleconverter for Canon EOS 600D?

I have a Canon EOS 600D with two lenses, EFS 18-55m and EFS 55-250mm. I'm not a professional photographer, but as a VJ, the camera comes in handy and does a great job with video. Which brand of ...
Emmanuel Vorgbe's user avatar
2 votes
1 answer
1k views

Are there any Teleconverters/Extenders which will work with a Canon Rebel EOS T3 and 55-250mm f/4-5.6 lens?

Are there any Teleconverters or Extenders that will work on the Rebel EOS T3, I am currently using an EFS 55-250MM 1:4-5.6 IS II lens in an area where there is a variety of interesting wildlife that I ...
jharrit's user avatar
  • 21
1 vote
1 answer
1k views

Comparing Canon EF 100-400mm f/4.5-5.6L IS II USM and Canon 70-300mm 1:4-5.6 IS II USM with Kenko 1.4x MC4 DGX

Canon EF 100-400mm f/4.5-5.6L IS II USM Canon 70-300mm 1:4-5.6 IS II USM with Kenko 1.4x MC4 DGX Both setups end up at roughly the same focal length areas at 100-400mm and 98-420mm respectively and, ...
iraserd's user avatar
  • 121
1 vote
1 answer
1k views

Will a Sigma 1.4tc teleconverter work with my Canon 70D?

I have a Canon 70D body with Sigma 150-600 lens. I am thinking of buying Sigma's teleconverter 1.4tc but I dont know if it works in canon70D.
rabindra's user avatar
3 votes
3 answers
384 views

How do I get my Canon 70D to detect my Tokina AT-X 400mm lens?

I have recently purchased a used (but remarkable condition) Tokina AT-X 400mm f/5.6 with an EF mount. This works on my 6D, allowing for aperture and focus control from the body. However, my 70D ...
devilfish17's user avatar
1 vote
1 answer
1k views

Nikon Teleconverter compatibility

From the Nikon site, AF-S Teleconverter TC-14E II [but the same caveat is on all 3 Teleconverters] Compatible with AF-S and AF-I NIKKOR lenses except AF-S 17-35mm f/2.8D IF-ED, 24-85mm f/3.5-4.5G ...
Tetsujin's user avatar
  • 23.3k

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