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Messages - bjd

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106
Lenses / Re: 100-400L Version II ain't comin' either!
« on: February 07, 2013, 12:09:56 PM »
Native 400 in the zoom is better in my hands than the 70-200II+ 2xIII.

I find with the extender, the image clearly softens and the contrast goes down... Of course it can be bumped up in post but depends on what is acceptable to you. The images can be more than acceptable to some...
I guess that my main worry would be what effect it has on AF in my 5DIII. Of course the straight 400 5.6 is also an alternative. Decisions, decisions.
Thanks for all your thoughts.
BJD

107
Lenses / Re: 100-400L Version II ain't comin' either!
« on: February 07, 2013, 09:30:20 AM »
I think they can definitely improve the optics and AF speed of the existing model.  I used to own a copy but found the 70-200/2.8 II + 2x III was close enough in performance to make it unnecessary to carry around two large lenses. 
I have the 70-200/2.8 II and its not long enough, so I was looking at the 100-400. I'll be keeping the 70-200 anyway. Your suggestion also came up as a possibility.
I'm a pure amateur so a new 100-400 may be too expensive for me anyway.  Do you still stick to your guns concerning the quality using the 2xIII? Certainly price, space, weight makes it very attractive as a solution.

Cheers Brian 

108
Abstract / Re: Abstract Interiors
« on: January 25, 2013, 10:13:52 AM »
I was looking for a spot to place this so I created a new subject called Abstract Interiors.
This is the inside of a Hotel in Cork City Ireland shot with a Fisheye Lens.
It reminded me of something out of a Stanley Kubrick movie.
http://www.flickr.com/photos/fergalocallaghan/8264366397/#in/photostream
Would love to get some comments or some other abstract interiors.

Stairs!

109
Abstract / Re: Beautiful bokeh! Let me see yours!
« on: January 25, 2013, 10:08:33 AM »
5DIII 70-200 F2.8 IS USM II

110
EOS Bodies - For Stills / Re: My never ending Focus woes with my 5DMK3
« on: January 20, 2013, 05:39:06 AM »
Hi,
well I had far better results yesterday, despite pretty poor light. Still had a few shots I couldn't explain, 4 focus points on a slow moving car, but the car itself completely out of focus. But I even did get a shot of a flying duck in focus in pretty bad light, taken a bit by surprise too. Using 61 point auto-selection.
Never had the points on a bird in a sutuation like that up till now.
Cheers Brian

70-200 F2.8L IS II USM at 200mm, F6.7, 1000th/Sec, ISO800.
And built this out of it. I guess my next Lens will be something with a 400 in it. 200mm doesn't go a long way.
Cheers Brian


111
EOS Bodies - For Stills / Re: My never ending Focus woes with my 5DMK3
« on: January 20, 2013, 05:27:55 AM »
You can go to usa.canon.com and download the English version of the manual for free.

it seems like you forgot an IMPORTANT THING

pls review your manual at page 73 and page 77

61 point automatic selection AF both in A+ and AI Servo Modes

dont worry, there's nothing wrong with your 5D3, just wrong user settings. :)

we all experience it - one way or the other.
That was a very good suggestion. Now I can immediately find the things you all were talking about in the manual. Still no real sucess though. I hope to get out tomorrow with the camera and try some more.
Cheers Brian
Hi,
well I had far better results yesterday, despite pretty poor light. Still had a few shots I couldn't explain, 4 focus points on a slow moving car, but the car itself completely out of focus. But I even did get a shot of a flying duck in focus in pretty bad light, taken a bit by surprise too. Using 61 point auto-selection.
Never had the points on a bird in a sutuation like that up till now.
Cheers Brian

70-200 F2.8L IS II USM at 200mm, F6.7, 1000th/Sec, ISO800.

112
Hi bjd,
   Yes, you are describing exactly what I expect to see - the AF "HUD" showing in real-time what it has locked on to, even though it has shifted.

    I tried a few variations on the interpretation of "61-point" before changing the AF display to "constant 61 point" (changing the available points through the reticle/M.Fn didn't help).

    Then I tried turning off point expansion (above/below/left/right and the 8 points around) and voila!

    When I do this, it DOES indeed track!  AF5 Mode 1,2 and 4 don't but mode 3 does :)

     There must be a reason why it only works in this one combination of modes (but still tracks invisibly).  Given enough time, that reason may become apparent.

Summary:   
     it seems that in order for this to work, the AF mode needs to be All 61 points (ie, all the points in the VF and the curved brackets as well) AND set to single point (no expansion) AND the AF5 display mode set to ALL (Constant) or SELECTED (Constant)

Thanks, bjd and J.R. -- mission accomplished :)
FWIW,
I installed the Exif Meta LR plugin today. It allows you to display a lot of EXIF data, e.g how many AF points were in Focus, how many selected, and loads of other stuff. I'm still fighting with configuration of the plugin, but that info may answer some of your (and my) questions.

Cheers
   


113
Hmm,
try the following, 61 points, AI Servo, focus on something near a center point, keep the shutter release half-pressed, then slowly move the camera away (left or right). I see other AF points trying to follow the object until its no longer under an AF point.

Load the file into DPP; there you can (ALT+L) display the AF points used, and those that had lock (red).

Hope I understood you correctly?

Cheers

114
EOS Bodies - For Stills / Re: My never ending Focus woes with my 5DMK3
« on: January 18, 2013, 03:44:14 PM »
You can go to usa.canon.com and download the English version of the manual for free.

it seems like you forgot an IMPORTANT THING

pls review your manual at page 73 and page 77

61 point automatic selection AF both in A+ and AI Servo Modes

dont worry, there's nothing wrong with your 5D3, just wrong user settings. :)

we all experience it - one way or the other.
That was a very good suggestion. Now I can immediately find the things you all were talking about in the manual. Still no real sucess though. I hope to get out tomorrow with the camera and try some more.
Cheers Brian


115
EOS Bodies - For Stills / Re: My never ending Focus woes with my 5DMK3
« on: January 13, 2013, 11:23:10 AM »
it seems like you forgot an IMPORTANT THING

pls review your manual at page 73 and page 77

61 point automatic selection AF both in A+ and AI Servo Modes

dont worry, there's nothing wrong with your 5D3, just wrong user settings. :)

we all experience it - one way or the other.
Wife says we can't afford a new user, so its up to me still.
My manual is in German so not totally certain what points you are referring to as the page numbers may be different.
I watched all three videos and read the book (EOS_5D_Mark_III_AF_setting_guidebook.pdf) again. With AI Servo AF with all 61 points used, it says "Shooting started by pinpointing focus on the leader of a cycling road race with a manually selected AF point". I'm still unclear on the "manually selected AF point", the large picture on page 53 shows 61 points in use.
Just testing getting the camera to focus on a stationary object indoors, it will do that with one of the outer points. Selecting the point or points it uses on its own.
When shooting BIF, usually pretty small ones in our garden, I find I need to anticipate a lot in which direction they will move, for example when taking off. So I will try to track them as much as possible, but I'm hoping for some assistance from the 61 points to get/keep the bird sharp as long as its under an AF point.   

Anyway thanks to everyone for the help and patience.
Cheers Brian




116
EOS Bodies - For Stills / Re: My never ending Focus woes with my 5DMK3
« on: January 13, 2013, 01:39:12 AM »
There's a very good video on B&H Learn in Depth on Canon AF. It comes in 3 parts.
http://www.bhphotovideo.com/indepth/photography/tips-solutions/look-canon-autofocus-system-part-1

It explained to me what each Focus points looks for & what is special about Cross-type points. How to use servo etc

I think the problem is that the car has no contrast points for the AF to lock on to. Or more specifically aiming all the focus points at the car is not the right way. You have to aim one of the little boxes at a point with contrast that contains either a horizontal or vertical line.

Plus you have to give the AF system a moment to focus & lock the target.

HI, thanks for the link, I'll certainly be studying the videos today. 
As I have focus problems with BIF I tried the, what I hoped would be a simpler, situation for the camera  with the moving cars. I only posted a few shots here, but as the car moves across the center of shot, I had assumed that one of the center points would lock on somewhere (as various parts, lines etc. cross) and it would at least follow from then on towards the left of frame.
Having the cars cross at an angle to me and not at 90° would I thought have given the Camera the time needed. We'll see.
Thanks to everyone who contributed here.
Cheers Brian

117
EOS Bodies - For Stills / Re: My never ending Focus woes with my 5DMK3
« on: January 12, 2013, 12:12:55 PM »
First of all, having the camera in M, Av, Tv or even P mode has nothing to do with AF.  Those modes deal with exposures.  You can set the focus point with any of those modes.  Secondly, in A+ modes, you are letting the camera do all the decisions for you, both the exposure and what to focus on.  The AF cases wasn't designed for that style of shooting, if you call that a style at all.
I know, and I dont use it, but, something works differently when it is set. And I wish I knew what setting causes that.
Remember, none of these will do you any good if you're shooting on the green mode.
True, but I am still intrigued why the outer column will do what I want in green mode,
but not when set to Av, Tv or M. Thats why I set the same parameters in M as were used in A+,
but it made no difference.
I have not selected any AF points, I let the camera do automatic selection.

Also I am using cars as they are a lot more predictable than birds. I though that if I could get it
to work with cars then I'll go back to birds after that and hone the settings.
Cheers Brian

118
EOS Bodies - For Stills / Re: My never ending Focus woes with my 5DMK3
« on: January 12, 2013, 11:24:58 AM »
Quote
In Case 3, the [Tracking sensitivity] parameter is set to [+1]. As a result, subjects that come into the AF points will be focused on more quickly. This setting is most
effective when subjects appear suddenly in the frame (for example photographing skiers in an alpine skiing downhill race,).
But I have to point the focus point there, or in its general direction first, till the object hs been picked up I assume.
I had read the guide such that it would go straight for the movement. I thought that in most cases it would automatically go for the nearest object covered by a focus point.

Just tried the following. Background is clear sky, to the left is the corner of a wall. Point camera at sky,
shutter relase half pressed, now slowly pan camera to the left. No reaction till the 4th AF point column from the left is over the wall/sky line, now it has picked up the wall. As soon as it has picked it up then AF points in the 2nd and 3rd rows pick the wall up too.

So I'm still wondering why the left most column does not pick up the wall, or the post as shown in focus2.jpg?

Cheers Brian

119
EOS Bodies - For Stills / Re: My never ending Focus woes with my 5DMK3
« on: January 12, 2013, 11:01:24 AM »
I especially waited for good light to try this out.
Cheers

120
EOS Bodies - For Stills / Re: My never ending Focus woes with my 5DMK3
« on: January 12, 2013, 10:44:54 AM »
Hi ddl,
it looks suspiciously like that. But then I have to ask "what is the manually selected AF point?". In my case it always tries to select a focus point at the center and I cannot get it to focus using one of the outer points.
In A+ I can get it to focus using the rightmost column of points at 1/250th and F5.0, if I switch to M and set 1/250th and F5.6 then I can get the fourth row from the right to focus. I tried using evaluative metering too instead of spot, but that doesn't change anything.
Strange

Cheers

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