The Electro-Focus (EF) mount has been the standard lens mount for Canon cameras since it's introduction in 1987.
25
votes
9answers
13k views
What is the difference between EF and EF-S lenses?
This is specific to Canon, but what is the difference between EF and EF-S lenses?
3
votes
2answers
1k views
What's the difference between Canon EF-S and EF-M?
What is the difference with Canon EF-S and EF-M lens?
3
votes
3answers
737 views
Why isn't it safe to use EF-S lenses on fullframe?
I've heard that EF-S lenses are not compatible with full frame bodies and that using such lenses could damage the mirror.
Are the EF-S lenses not compatible with full frame bodies in terms of "not ...
3
votes
1answer
165 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 ...
2
votes
5answers
798 views
Tamron 17-50 f2.8 lens vs Canon 17-40mm 4.0 lens
How is the quality of the Tamron 17-50mm f2.8 lens? Specifically, is it comparable to the Canon 17-40mm lens, in the following measurements.
Overall quality (Blur, aberrations, etc)
Parallel lines ...
2
votes
3answers
139 views
Is there a way to use Canon 18-200 EF-s lens on Canon 6D full frame body?
I just purchased Canon 6D (Full frame camera) and I hate to lose the usage of my simple 18-200 EF-S lens.
Any idea if there is a technology that allows me to use the lens on the 5d body?
1
vote
3answers
193 views
Canon EF 24/28 mm f/2.8 IS USM Autofocus Lenses
Is there a good reason to choose one lens over the other?
Granted that the 24mm lens is a bit wider than the 28mm lens but are there any other reasons?
1
vote
2answers
255 views
Why I can't find an A-mount to Canon EF Adapter?
I looked online for an adapter from A-mount to Canon EF but I couldn't find. The Minolta/Sony A-mount flange focal distance is 44.50mm and Canon EF flang focal distance is 44.00mm, in theory A-mount ...
1
vote
1answer
88 views
Misfunction of Canon EF 50mm f/1.8 on manual focus?
I have a Canon T3i (600d) and two lenses: EF-S 18-135mm and EF 50mm f/1.8.
While working with manual focus, I can shoot out of focus (on purpose) with the 18-135 (as expected).
But with the EF 50mm, ...
-4
votes
3answers
184 views
What lenses could I get for EOS 60D beyond the kit? [closed]
I have just bought the EOS 60D and I am thinking to buy some new lenses.
What are the next best lenses to buy to get more detail in my pictures and do they have to be EF-S lenses (like the kit lens ...
