20D vs 6D AF

How do the autofocus on these two compare?

I am planning to replace my 20d with the 6d....

Im petty sure that the AF on the 6D will be far superior to the AF on the 20D.

11 AF points vs 9 on the 20D.

Unless you meant the 60D?

Not even remotely comparable, 6d trumps 20d in accuracy, speed, sensitivity. 20d is what, 10 years old now?? Did you really expect otherwise?

Yes accuracy would be roughly the same as reliability. Precision is different. So maybe he meant to say the precision of both will be about the same but the accuracy may differ slightly... Whether or not this statement is true, I'm not sure, but I would think the 6D's focus system would be superior. When canon wants to slightly cripple one aspect of a camera (like the focus on the 6D) so as not to cannibalize other cameras (5DIII), they tend to use a similar system to one that's already in place on either a lower line of camera or a system that's 1-2 years old... Since the 20D is much older than that, my guess is that, just based on the progression of technology alone, the 6D is better

Naito wrote in post #16169150
Not even remotely comparable, 6d trumps 20d in accuracy, speed, sensitivity. 20d is what, 10 years old now?? Did you really expect otherwise?

# of years between cameras may not always tell the complete story. There were 4-5 years between the 5D and 5D2, however no difference really in AF. It really depends on the type of AF sensors employed, #, algorithmic changes, etc.

That being said, I am sure the AF points are more sensitive, coupled with better processing and algorithms, on the 6D over the 20D. It will focus better in lower light too, I expect.

Just wanted to be doubly sure

It will be my first trial at a full frame and while I don't expect the af to match the 7d, it has to at least beat the 20d....

You will be fine with the 6D AF, and you will undoubtedly love the images. Your 20D will be made obsolete, because you won't need the APS-C factor. If you crop the 6D images down to a 1.6 view, you will end up with the same resolution roughly as your 20D, same DOF, etc.

If I had a 20D/30D and went with any of the 20+ mpx FF bodies, I most likely would sell or give away the old bodies as they just wouldn't be necessary any longer, unless I needed some old backup camera. They really offer no advantage other than backup capability.

Good luck with your decision!

Hello,

I am a brand new "forumer" while I have been visiting this website for a long time as I find it really interesting. Excuse my "french", or in this case my english as I am french and I don't speak english in the same way as my mother tongue.

I have a 6d,and I had before a 5dII. What I can say is that the 6d has an amazing AF system. It is working perfectly even if in some extreme cases the outer points work hardlier than the center point.

The 6d is a great machine. It is perfectly built and its size and weight are just perfect. I com from a 5dII and i love my 6d much more than the 5dII. I had a 40d before and i have the same feeling as this older body in term of size, weight and reactivity. Moreover, it has new features very usefull ad funny. A must have!

Nemofoto wrote in post #16169334
Hello,

I am a brand new "forumer" while I have been visiting this website for a long time as I find it really interesting. Excuse my "french", or in this case my english as I am french and I don't speak english in the same way as my mother tongue.

I have a 6d,and I had before a 5dII. What I can say is that the 6d has an amazing AF system. It is working perfectly even if in some extreme cases the outer points work hardlier than the center point.

The 6d is a great machine. It is perfectly built and its size and weight are just perfect. I com from a 5dII and i love my 6d much more than the 5dII. I had a 40d before and i have the same feeling as this older body in term of size, weight and reactivity. Moreover, it has new features very usefull ad funny. A must have!

Welcome to the forum. Be sure to post some photos when you get a chance

Nemofoto wrote in post #16169334
Hello,

I am a brand new "forumer" while I have been visiting this website for a long time as I find it really interesting. Excuse my "french", or in this case my english as I am french and I don't speak english in the same way as my mother tongue.

I have a 6d,and I had before a 5dII. What I can say is that the 6d has an amazing AF system. It is working perfectly even if in some extreme cases the outer points work hardlier than the center point.

The 6d is a great machine. It is perfectly built and its size and weight are just perfect. I com from a 5dII and i love my 6d much more than the 5dII. I had a 40d before and i have the same feeling as this older body in term of size, weight and reactivity. Moreover, it has new features very usefull ad funny. A must have!

I understood you perfectly! I expect that the 20D, 5D, and 5D2 all had very similar AF systems, as there were too many changes between those particular models and generations. Canon really started to work on AF performance on the 7D and subsequent bodies, and now we have a great 5D3 FF sports-capable body, and the 6D is improved, etc. Canon is starting to kick things into gear over the past few years!

Welcome to POTN, we look forward to samples shots in the 6D photo thread: https://photography-on-the.net …/showthread.php​?t=1252637

kram wrote in post #16169165
Just wanted to be doubly sure

I went from the 20D to the 6D, with a few years in the middle on a 7D. One of my reasons for choosing the 6D was to get back to the simplicity I had with the 20D. For my slow careful work (main use), the 7D was overkill-complicated.

Comparing the 20D to the 6D, the new focus system looks the same, but feels amplified. The only surprise is that the center point is so good, it kind of hogs all the fun, creating a bias toward the center, even when all points are turned on. And there's some debat as to the effect:

https://photography-on-the.net …/showthread.php​?t=1318540


Overall, you'll be pleased. The sensor cleaner alone is worth the move!

kram wrote in post #16169165
Just wanted to be doubly sure

It will be my first trial at a full frame and while I don't expect the af to match the 7d, it has to at least beat the 20d....

A lot of users who add a 6D to the stable end up neglecting their 7D, so don't write it off yet

It all depends on what you shoot. I use my outer points pretty commonly, especially when shooting in portrait orientation and I rarely find that the focus isn't quick or accurate (depending on what lens I'm using).

I had a 20D a few years ago, there's really no comparison.

TeamSpeed wrote in post #16169419
I understood you perfectly! I expect that the 20D, 5D, and 5D2 all had very similar AF systems, as there were too many changes between those particular models and generations. Canon really started to work on AF performance on the 7D and subsequent bodies, and now we have a great 5D3 FF sports-capable body, and the 6D is improved, etc. Canon is starting to kick things into gear over the past few years!

Welcome to POTN, we look forward to samples shots in the 6D photo thread: https://photography-on-the.net …/showthread.php​?t=1252637

Thanks Jaomul and TeamSpeed, I am happy to notice that what I said is undestandable
I really think as you said, that the 6d is a really good body and Canon has improved a lot its latest products. The most impressive thing is how pleasant to use it is. Great piece of work ! The only thing that I dislike vs my old 5dII is the rendering of its photos. The 5dII looked sharper while in reality, viewing at 100%, the 6d is really better. It is a strange feeling. The blur seems more pronouced on the 5dII too. But I also think I have to parametrize my brand new body