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| Multi point focusing modes - Page 1 | |
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| Posted: Tue Feb 27th, 2018 05:05 |
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1st Post |
Eric
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I need some help! Not sure if this is a Fuji issue and I should be asking this on their site, but since I know you guys better, you will probably be more considerate in your assistance. Have I got something wrong with the notion of using multipoint focus modes? Here's an example..... There is bird eating on my lawn ....a few inches in front of it is a leaf on the grass, a few inches behind it, is a stick on the grass. If I frame the bird up with the centre spot on the bird and half depress the shutter, several lights on the 9spot matrix light up. These individually cover the stick, the leaf and the bird. If I take the photo and use the zoom in on focus point function....it's not on the bird! It's not on ANY of these 3 highlighted points, but somewhere inbetweeen. Is the camera using the objects to determine dof and 'choosing' its focal point to approximately cover them all?? More worrying....if I focus on a similar group, sometime the centre light doesn't illuminate with the others. It's as if the camera has decided what IT thinks is the important focal point from the 9 options. Am I using this metering mode incorrectly? If I switch to single spot focusing the centre spot is the one it zooms into....it works. But with multispot modes the camera seems to decide what it thinks is important. Photographing birds sat in tree branches is a nightmare! And don't get me started trying to use it in AFC mode with mult point focusing.....it's all over the place. I can understand how a bird in flight where the bird was the only object against a clear sky would work. But even then, what happens if the centre spot on the birds head doesn't illuminate and the ones on the edge of the wings ( max contrast) do light up? The head won't be in focus???? Help!  
____________________ Eric |
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| Posted: Tue Feb 27th, 2018 05:20 |
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2nd Post |
Robert
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I would say yes, the multi point metering is trying it's (dumb) best to balance the focus points it's marking up for the prevailing settings and image. I rarely move away from single point focus, on the rare occasions I have an AF lens mounted. My D3300 does something similar, and pops the flash up for good measure!
____________________ Robert. |
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| Posted: Tue Feb 27th, 2018 05:54 |
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3rd Post |
Eric
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Robert wrote:I would say yes, the multi point metering is trying it's (dumb) best to balance the focus points it's marking up for the prevailing settings and image. And yet many wildlife photographers use the multipoint focusing modes. I've just read Fuji's special focusing site and it doesn't answer my question. It says that in the zone mode you have to first get the subject in the centre of the zone. Then as long as the subject remains in the zone ar3a selected, it will keep the focus lock. But my problem is getting the cameras zone system sensors to concentrate on the centre spot and ignore the other interesting items in its eyeline!! Just tried to photograph a rook in the walnut tree outside the window. The zone system was lit up like a Christmas's tree. But would it focus on the rooks beak? No. Switch to single spot.....locked on immediately. I just don't see how you can get sharp focus where YOU want it using zones????
____________________ Eric |
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| Posted: Tue Feb 27th, 2018 05:58 |
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4th Post |
Eric
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All 3 batteries now flat! Well I have taken 250 shots on the camera!!!!! Off to paint the pergoda now it's stopped snowing....do something constructive as opposed to irritational!! 
____________________ Eric |
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| Posted: Tue Feb 27th, 2018 07:17 |
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5th Post |
Robert
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What you really need is a D500. End of problem. And that will take a heck of a lot more than 83.33333333333333 shots per battery! 
____________________ Robert. |
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| Posted: Tue Feb 27th, 2018 07:47 |
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6th Post |
Eric
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Robert wrote:What you really need is a D500. You are suggesting that this multipoint focusing issue is unique to Fuji. If it is, then I agree the Fuji has to go. But in fairness to the camera, I need to know if Nikon's when used in the equivalent mode are any different.
____________________ Eric |
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| Posted: Tue Feb 27th, 2018 09:49 |
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7th Post |
Robert
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Does the Fuji not have single point focus? I would have though the camera is functioning as expected, averaging the focus between the variously selected points and adding a little calculation of it's own? Trouble is the camera is doing the selecting. You need a single point, on the beak or the eye. This is why I avoid multi point focus. I put up with it on the D3300 because it's rare that I take a critical photo with that camera, it hardly ever goes off fully auto P&S.
____________________ Robert. |
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| Posted: Tue Feb 27th, 2018 10:53 |
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8th Post |
Eric
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Robert wrote:Does the Fuji not have single point focus? Yes it's got single point....I use it most of the time. What I am trying to do is establish the merit of the zone focusingmode...because many swear by it for capturing moving subjects. I am also trying to establish if the camera is functioning properly! I cannot for the life of me understand why, if it is working as design, it refuses to use the centre square. It rarely lights. Just centred up a black bird on lawn....all 3 bottom squares below the bird light up?? Take the shot ....and surprise surprise the grass in front of the bird where the 3 squares were, is sharp....the bird isn't!
____________________ Eric |
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| Posted: Tue Feb 27th, 2018 11:26 |
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9th Post |
jk
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Eric, The multi-point AF stuff is confusing and peverse. I tend to simplify and go to single ot AF for most stuff. The advent of the joystick for AF point moving makes this much easier. I use in Nikon the Dynamic AF 51 points mode for flamenco and it is 90% effective. Likewise with Fuji I have it set to use mode2 of the dunamic. I think there are several different modes and the one you need to uses varies by subject movement speed. It is not a Fuji thing but the Nikon sustm seems to work better for wildlife. I need to test the Fuji more for wildlife.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Tue Feb 27th, 2018 13:54 |
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10th Post |
Eric
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jk wrote:Eric, This is an exercise in understanding how different modes MIGHT help. I have been a committed single spot user for many years for EVERYTHING but was merely trying to see if I was missing something with all these modes. My problem is not so much when to use it as....how can you possibly get accurate focus from zone focusing? Here's an example. No movement of subject or camera to confuse the system. I spread a range of food on the lawn for various birds. Before they arrived I framed up with the 'fat ball' in the centre of the screen and the focusing 9x9 zone as shown in this picture. Press the shutter and the 3 bottom squares light up green! What's wrong with the middle square that's positioned right over the main object? Why didn't that light up AS WELL or with the two either side of it? No surprise that when I reviewed the image....the grass in front of the fatball, where the 3green squares were, is sharp. The target isn't! If this is how zone facing works, choosing its own focusing points, how can you hope to get selected areas eg head, of a flying bird sharp? This system could focus on a wing. I noticed even with waders, using this zone focusing, the camera was more interested in the birds legs that the head, where I aimed the focus. I had to go back to single spot focus to get the camera to concentrate on what I wanted to be the focal point. I am at a loss as to how you can dictate what's in focus using this system? Or is my camera screwed? Attachment: 1EFEEABB-E54E-4881-9E0F-C29FB5A01D2B.jpeg (Downloaded 14 times)
____________________ Eric |
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