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Thread started 26 Mar 2009 (Thursday) 10:45
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Why 51 points?

 
Jannie
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Mar 26, 2009 10:45 |  #1

I have a friend who works with two D300's. He's always telling me about how much he loves those 51 points of focus. I asked him how he has the time when shooting to decide which one he's going to use. Then I found out he uses the ring of - ops he uses the whole darn screen of fire to let his camera decide how to focus.

After that I noticed that he never has the flash off of his camera and is always stopped down so I have to wonder for those of us who focus on that near eye, loving bokeh and shooting wide open often, are 51 points of focus futile.

After shooting with a MKIII, I cannot imagine wanting anything different.

But is the real advantage with sports where you've got plenty of light and stopped down while tracking something, is that the advantage. I've used the ring of fire on my 5D I think one day and never used it on the MKIII because I couldn't see the point but it's there so there must be a good reason for it's being. Can someone elucidate?


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nicksan
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Mar 26, 2009 10:47 |  #2

What does your friend shoot? Just portraits?

Jannie wrote in post #7602711 (external link)
I have a friend who works with two D300's. He's always telling me about how much he loves those 51 points of focus. I asked him how he has the time when shooting to decide which one he's going to use. Then I found out he uses the ring of - ops he uses the whole darn screen of fire to let his camera decide how to focus.

After that I noticed that he never has the flash off of his camera and is always stopped down so I I have to wonder for those of us who focus on that near eye, loving bokeh and shooting wide open often, are 51 points of focus futile.

After shooting with a MKIII, I cannot imagine wanting anything different.




  
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CAL ­ Imagery
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Mar 26, 2009 10:48 |  #3

The ring of fire also slows it down. I currently have my 3 set to its ring of fire - mainly because I can and I'm not shooting action shots. However, one point will focus much quicker. But for a mid-level camera, that's a point of pride to have 50 million points.


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nicksan
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Mar 26, 2009 10:50 |  #4

I rarely if ever use R.O.F.
However on my MKIII, I do have my surrounding assist points enabled.




  
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CAL ­ Imagery
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Mar 26, 2009 10:53 |  #5

I wonder if my 3 has selectable points? Maybe later today I can d/l a manual because I left mine at school since this is spring break...


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GCGuy
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Mar 26, 2009 11:04 |  #6

If I could get the D300's AF into my 40D, that would be a match made in heaven. The D300 just uses the pad on the back for selecting AF points in addition to a switch right next to it for selecting which points and how to use them.

The D300's huge advantage with all those AF points is it's ability to track things like seagulls while you're bouncing around in the back of a boat and manage to keep focus the whole time (as long as you can see the bird through the viewfinder). It also does a great job of tracking smaller moving objects like bees and butterflies too.

Now if only Canon can offer us something like that in a $1500 or so price range camera........


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wrussi
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Mar 26, 2009 11:05 as a reply to  @ CAL Imagery's post |  #7

what is the ring of fire??


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shooterman
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Mar 26, 2009 11:13 |  #8

wrussi wrote in post #7602830 (external link)
what is the ring of fire??

It's a song by Johnny Cash.


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nicksan
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Mar 26, 2009 11:15 |  #9

Who's Johnny Cash? ;-)a

shooterman wrote in post #7602877 (external link)
It's a song by Johnny Cash.




  
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shooterman
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Mar 26, 2009 11:22 |  #10

nicksan wrote in post #7602892 (external link)
Who's Johnny Cash? ;-)a

I think he was Johnny Paycheck's brother. ;)


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nicksan
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Mar 26, 2009 11:51 |  #11

Then probably not related to me as I have no idea what "cash" is!

shooterman wrote in post #7602933 (external link)
I think he was Johnny Paycheck's brother. ;)




  
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Karl ­ Johnston
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Mar 26, 2009 12:07 |  #12
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wrussi wrote in post #7602830 (external link)
what is the ring of fire??

AF point arrangement on the canon cameras looks like a ring of fire when it's all lit up and being used


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CAL ­ Imagery
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Mar 26, 2009 12:09 |  #13

Karl Johnston wrote in post #7603246 (external link)
AF point arrangement on the canon cameras looks like a ring of fire when it's all lit up and being used

Not necessarily even that. When one selects the ROF, it is a ring, but when actually aiming to take a picture, only a few points, usually in the middle, are lit up.


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Mar 26, 2009 13:25 |  #14

nicksan wrote in post #7602743 (external link)
I rarely if ever use R.O.F.
However on my MKIII, I do have my surrounding assist points enabled.

Same here.



  
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gjl711
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Mar 26, 2009 13:34 |  #15

Jannie wrote in post #7602711 (external link)
...I've used the ring of fire on my 5D...

Boy, this is embarrassing. I've had my 5D since the dinosaurs and didn't know it could do that. Course I don't think I've had it on anything but the center point pretty much since day 1.


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Why 51 points?
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