7D Mark II - Focus Discussions

digital paradise wrote in post #18035250
Yes it is. I fail more often than succeed. Got lucky with these.

Holy Bunsen burner Batman, you nailed these!

I think I was in 65 point zone. If I was it would have been in Case 6. I'll see if I can find out.

Lester Wareham wrote in post #18035237
I think this is a hard ask of any camera. Doing this I would prefocus just in front of the nest box and play the numbers game. I don't think you should make any negative conclusions about you camera based on this.

Well that was my conclusion too after my extensive testing

I never made it to the motocross last night but is on this afternoon and I'm going. I'm also going to do the the old tripod test this weekend. Two targets. Case 2 @ -2 vs Case 3 @ +2.

sidknee wrote in post #18026045
Respectfuly, you're talking about a completely different thing than I am, I can track birds that are flying and take reasonable photos, you yourself have commented on swallows in flight I shot last year. The birds I am trying to shoot are starting at a standstill and accelerating to a squillion miles an hour in fractions of a second. If you can consistently follow something that quick off the mark then I take my hat off to you.

Focused and tracked

Gallery photo:
posted by sidknee originally in forum: Birds

Pot luck

Gallery photo:
posted by sidknee originally in forum: Canon Digital Cameras

Well I like your pot luck, wish I could get luck as good as that....I am sure there is quite a bit of skill applied too.

I notice you are using the Siggy 150-600, I am using the Tammy 150-600. This zooms will not be as fast as the fast primes and by all accounts the 100-400 is good too. I notice a bit more speed at say 400 compared to 600 and quicker initial lock too.

Lester Wareham wrote in post #18036144
Well I like your pot luck, wish I could get luck as good as that....I am sure there is quite a bit of skill applied too.

I notice you are using the Siggy 150-600, I am using the Tammy 150-600. This zooms will not be as fast as the fast primes and by all accounts the 100-400 is good too. I notice a bit more speed at say 400 compared to 600 and quicker initial lock too.

Thanks Lester, that is pre focusing and blasting for you

I'd love to have a 600mm F/anything prime to try it with but us mere mortals have to make do with what we have. Unfortunately.

Figures. Both Motocross events were canceled due to high winds. I did try 12 point zone AF on some acrobats. I won't post all the burst shots as they were OK. I was in a bad spot with the sun and being at the end off the show I did not get the exposure right but was just testing AF anyway. 12 point worked really well. I only took 30 shots.

Diving off a tower onto an inflatable mattress.

digital paradise wrote in post #18036398
Figures. Both Motocross events were canceled due to high winds. I did try 12 point zone AF on some acrobats. I won't post all the burst shots as they were OK. I was in a bad spot with the sun and being at the end off the show I did not get the exposure right but was just testing AF anyway. 12 point worked really well. I only took 30 shots.

Diving off a tower onto an inflatable mattress.

Jumping off a structure onto a trampoline.

So how well did your burst AF work? What percent of your bursts retained proper focus? In my opinion, the camera does extremely well in burst AF, non focus is usually 99% user aim issues, coming off and on the subject.

gschlact wrote in post #18037343
So how well did your burst AF work? What percent of your bursts retained proper focus? In my opinion, the camera does extremely well in burst AF, non focus is usually 99% user aim issues, coming off and on the subject.

Well over 90%. A few that were out was because of me still adjusting to zooming.

So I did my Case 2, TS -2 vs Case 3, TS +2 test. I placed two my old business cards on flat surfaces. One about 16 inches closer than the other and about 12 inches apart. On the back is white text on a black background that just lists my website.

As expected Case 2 gave me time to move from target A to B before it refocused. Between 1 to 2 seconds. In Case 3 I could not even get to the text on target B. It would refocus instantly as soon as the AF point left the closer target and fell on the further one. Even on pure white or black as long as it had some contrast it refocused instantly.

Something I noticed about Case 3 which I don't use very often. Accel/Decel goes to 1. The only difference between it and Case 4 is TS is on 0 in Case 3 and +1 in Case 4. Both would be good for sports and if you want to switch more quickly between 2 targets Case 3 would be better it seems.

You may find this interesting. Finally an explanation to what an "electrical adjustment" is.

http://www.fredmiranda​.com …topic/1398346/2​2#13608433

digital paradise wrote in post #18042605
You may find this interesting. Finally an explanation to what an "electrical adjustment" is.

http://www.fredmiranda​.com …topic/1398346/2​2#13608433

TBH that explanation doesn't ring true to me as an electronic engineer, if system operation was causing internal noise on the imaging sensor then Canon have a major internal EMC design fault which I doubt.

I suspect something has got garbled between the tech and customer facing people.

I could believe the AF control loop might need a twiddle on some models due to part to part variation, perhaps causing control loop chatter which some might call noise.

I suspect this will remain a mystery as we can only guess.

HELP

I dont know what I have changed in my settings but for some reason when I put my 7D2 in live view I can not go continuous shots, it was doing it before, any ideas, continuous is on and it works when not in live view

aladyforty wrote in post #18043013
HELP

I dont know what I have changed in my settings but for some reason when I put my 7D2 in live view I can not go continuous shots, it was doing it before, any ideas, continuous is on and it works when not in live view

Julie,
By continuous, do you mean Continuous AF (one of the menu settings) that let's the live view continuously focus, or do you mean continuous as in high speed shutter which would be the Drive setting?

Lester Wareham wrote in post #18042956
TBH that explanation doesn't ring true to me as an electronic engineer, if system operation was causing internal noise on the imaging sensor then Canon have a major internal EMC design fault which I doubt.

I suspect something has got garbled between the tech and customer facing people.

I could believe the AF control loop might need a twiddle on some models due to part to part variation, perhaps causing control loop chatter which some might call noise.

I suspect this will remain a mystery as we can only guess.

It is good with your background to respond. Something could be up with the communication. I know I was only able to talk to an actual tech once because he called me so who knows where the actual info came from. Normally you are dealing with a service liaison who just reads the techs notes. Many people refer to the liaison as a tech. The liaison may know something more just by working there for a longer time. Unless Rudy Winston says it I would agree we don't know for sure. Another thing on my list to ask him if I ever sit beside him on a plane. He won't have a relaxing fight