Alley in Pisa, Italy

by Lars Kotthoff

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1
vote
1answer
47 views

Compability of Kenko DGX PR0300 2.0X C-AF F4.5 for Canon and a Canon 55-250mm lens

Can the Kenko DGX PR0300 2.0X C-AF F/4.5 Lens for Canon (Black) be used with a Canon 55-250mm lens?
3
votes
2answers
102 views

What will be my aperture with a 2× teleconverter? [duplicate]

I have a Canon 60D (crop factor 1.6x) and an 85mm f1.8 prime lens. Now I want to add a 2x teleconverter and attach the 85mm lens to it. My question is: What will the effective aperture be?
1
vote
2answers
153 views

Can I use a FD lens + extender with Canon EOS mount?

I have a Sigma 400 mm FD lens which comes with an FD to EOS (EF) adapter. Is it possible for me to attach an extender to it. May be a 2X FD extender and then attach the FD to EOS (EF) adapter. Is ...
9
votes
2answers
1k views

How does using a 2x teleconverter with 70-200 f/2.8 affect use?

I recently acquired the Canon EF 70-200mm f/2.8L IS II USM lens and I love it. However the other weekend I went to Heathrow to do some aviation photography. Whilst it is great for aircraft near to ...
1
vote
3answers
602 views

Compatibility of Canon teleconverters with non-Canon lenses

I have two APS-C (70D and 600D) bodies with Canon EF and EF-s lenses, and Sigmas, among them the Sigma 70-200 f2.8 HSM OS. I am also considering getting the new Tamron 150-600 lens, pending reviews. ...
1
vote
4answers
574 views

Will the Canon 5D MK II with 100-400 1:4.5-5.6 work properly with Kenko 1.4 converter?

I'm using 5D MKII body and 100-400 f/4.5-5.6 lens. I want to use a 1.4 converter; will the Kenko converter work and autofocus properly?
3
votes
1answer
256 views

Are there any quality 1.7x teleconverters for Canon EF mount?

I am planning to buy a Canon EF 300mm f/2.8 L IS II soon, probably in the first half of next year. I plan for it to be my wildlife and birding lens, and with the 1.4x and 2x Mark III teleconverters ...
8
votes
5answers
560 views

Which Canon prime and teleconverters should I bring to a safari?

Currently I have the 70-300mm L lens from Canon. I would like to go on a Safari trip, and was wondering, does it make sense to pick up the Canon EF 400mm f/2.8L IS II with the 1.4X and 2X ...
8
votes
2answers
4k 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 ...
4
votes
3answers
1k views

Canon extender 2x III with 70-200mm F4L vs 100-400mm F4.5-5.6L for wildlife shooting

Photography.SE, hello there, this is my first question, hence please pardon my inexperience of phrasing the question. I am about to go to Yosemite and Yellowstone for 3 weeks next month, and ...
7
votes
2answers
228 views

Why can only certain Canon lenses be fitted with an extender?

Is there a reason only certain lenses can be fitted with an extender? I'd really love to be able to fit the extender to some of my cheaper lenses.