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Savageduck insisted



 
 
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  #31  
Old July 29th 15, 09:25 PM posted to rec.photo.digital
Savageduck[_7_]
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Posts: 269
Default Savageduck insisted

On 2015-07-29 19:41:44 +0000, Bill W said:

On Wed, 29 Jul 2015 15:17:19 -0400, PeterN
wrote:

On 7/28/2015 11:35 PM, nospam wrote:
In article , Bill W
wrote:

What is 3D tracking? My problem at this air show location with all
those focus points is that it will start focusing on the power lines,
trees, mountains, clouds, etc. Does it mean that it tries to track
objects that are at a consistent distance? My Pentax does not have
that option, so it might be moot anyway.

http://www.nikonusa.com/en/Learn-And...i4lx/3d-focus-
tracking.html
An invaluable feature for sports, action and wildlife photography, 3D
focus tracking, available in select Nikon D-SLRs, automatically
shifts the focus point to follow the movement of the subject. With
the shutter release pressed halfway, you'll see in the viewfinder the
lens continuously maintain focus as the subject moves.

However, maintaining focus doesn't guarantee a sharp image, as there
is a short time lag between the release of the shutter and the
capture of the picture. To solve this problem, the focus tracking
system is a predictive system that uses special algorithms to
forecast the position of the subject at the moment the image is
captured. The prediction is based on a measurement of the subject's
movement and speed.

Okay, not exactly what I was thinking. If I use too many focus points,
I too often end up focused on the wrong subject, but with too few, I
lose the subject too easily after I lock onto it. It's just a matter
of practice, I suppose.

it depends on the focusing mode and given situation. no one mode is
best in all cases, which is why there is more than one mode.

here's a description of the various mode:
https://photographylife.com/dslr-autofocus-modes-explained


Yep! and as BillW stated, it takes practice. I don't think reading the
manual in the field is very practical.


Yep, what happens with smallish objects is that I can't find them in
the viewfinder quickly enough, so then the camera starts to focus on
background or foreground objects, leaving the lens completely out of
focus for the subject I'm looking for, which then makes it harder yet
to find. It's mostly me, but also the fact that I'm not using the best
equipment for that sort of thing. Luckily, when something is just a
hobby, one doesn't need the best equipment for anything. I can live
with missed shots. It's not like I'm letting the Pulitzer get away.


I don't know which Pentax you have, but I guessed at a K3 and took a
look at the manual.
That Pentax has a 27 AF point matrix, and has AF-S and AF-C options.
The AF-C has options for Release priority (the shutter will release
regardless of focus being locked), or Focus priority (the shutter will
release only if focus is locked).

It also has Tracking which will track the subject in focus. That does
not seem to be quite the same thing as the Nikon Dynamic 3D Tracking.

Of course if you don't have a K3 then you are going to have to check
your camera's manual.

--
Regards,

Savageduck

  #32  
Old July 29th 15, 11:38 PM posted to rec.photo.digital
Eric Stevens
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Posts: 13,611
Default Savageduck insisted

On Wed, 29 Jul 2015 14:45:48 -0400, PeterN
wrote:

On 7/28/2015 10:22 PM, Bill W wrote:
On Tue, 28 Jul 2015 19:29:35 -0400, PeterN
wrote:

On 7/28/2015 3:25 AM, Bill W wrote:
Okay, I was forced to post some air show photos:

https://www.flickr.com/photos/489821...7654121813454/

Comments are welcome, but on the processing, of course. They're just
planes in the sky, not much you can do with those as far as
composition goes.

Anyway, all work was done in LR, all photos were cropped, and all had
at least some of the following adjustments: color temp, exposure,
shadows, highlights, clarity, vibrance, saturation, and sharpening,
and one photo used the haze removal slider (the one with the sun in
the upper right corner). Those are the things I'm interested in
comments on. I see after posting them that there is noise in the sky
in some of them. I really need to look into that, but it might just be
aggressive sharpening. I also failed to remove spots in a couple of
the photos. I do need to learn to clean those lenses...


What look are you trying to achieve.
Try playing with levels /curves on a separate layer. Judicious use will
cause your image to really pop.

http://www.picturecorrect.com/tips/when-to-use-levels-or-curves-in-photoshop/

There are also some neat free tutorials on youtube.


I wasn't trying to achieve any look, just hoping to get proper looking
photos. They're just a bunch of planes flying around, but I was hoping
that a couple of those images did pop, and thought at least a couple
of them did. Many of them clearly didn't, but I at least wanted to get
the WB, saturation, & exposure looking right.

I do have PS, but I'm not using it much anymore, unless I need to do
things that LR cannot do at all. I finally understand why people use
LR. I used to just do what I needed to the raw file, and then save it
as a tiff. Then one day I saw how large those tiff files really are -
almost 10x the size of the original raw in some cases, and the light
bulb went on. No more, unless absolutely necessary.


These links are LR specific:

http://www.peachpit.com/articles/article.aspx?p=2117243&seqNum=9

https://www.youtube.com/watch?v=qDq1JguOyv4


I find that if the black and white points are properly set there is
much less need for for use of the clarity, vibrance or saturation
controls.
--

Regards,

Eric Stevens
  #33  
Old July 30th 15, 12:20 AM posted to rec.photo.digital
PeterN[_6_]
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Posts: 4,254
Default Savageduck insisted

On 7/29/2015 3:37 PM, Savageduck wrote:
On 2015-07-29 19:14:47 +0000, PeterN said:

On 7/28/2015 10:58 PM, Bill W wrote:
On Tue, 28 Jul 2015 18:25:30 -0700, Savageduck
wrote:

BTW: This is an extreme example of why AF-C and multi-AF point 3D
tracking can work to save a capture. This was an 8 frame burst with a
fast right to left pass which was completed in 2.25 seconds. I was
doing my best to hold to center, but not everything goes to plan.

This shows where the AF point was when lock was made. Without the 51
point AF matrix I would have been SOL.
https://dl.dropboxusercontent.com/u/1295663/FileChute/screenshot_238.jpg


...and here is the cropped final result after LR processing.
https://db.tt/tEtHO81e

What is 3D tracking? My problem at this air show location with all
those focus points is that it will start focusing on the power lines,
trees, mountains, clouds, etc. Does it mean that it tries to track
objects that are at a consistent distance? My Pentax does not have
that option, so it might be moot anyway.


For my own bird shots I usually use one point focus. (left, right, or
center.) At times when needed, I switch to five points. I think that
fifty-one points can easily confuse the camera.


The photographer is more likely to be confused than the camera. For fast
moving targets (in my case planes, cars, and bikes, sometimes birds)
AF-C together with 3D 51 Point Dynamic Area, and 3D-tracking has proven
to be quite successful. The only failures have been due to me failing to
hold at least one AF point on the target. I can suffer from pilot error
as much as the next guy.


I find it easier to use 51 point focus when the birds are comming
towards me.



For landscape I use hypoerfocal distance focusing, though sometimes I
screw that up.)


I think that this is where you replace "sometimes" with "mostly".


Think what you will.

--
PeterN
  #34  
Old July 30th 15, 12:23 AM posted to rec.photo.digital
PeterN[_6_]
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Posts: 4,254
Default Savageduck insisted

On 7/29/2015 3:41 PM, Bill W wrote:

snip


Yep, what happens with smallish objects is that I can't find them in
the viewfinder quickly enough, so then the camera starts to focus on
background or foreground objects, leaving the lens completely out of
focus for the subject I'm looking for, which then makes it harder yet
to find. It's mostly me, but also the fact that I'm not using the best
equipment for that sort of thing. Luckily, when something is just a
hobby, one doesn't need the best equipment for anything. I can live
with missed shots. It's not like I'm letting the Pulitzer get away.


Several years ago I was so fascinated watching whales breach, that I
forgot I had a camera. (And don't regret my failure to get the shots.)


--
PeterN
  #35  
Old July 30th 15, 12:37 AM posted to rec.photo.digital
Bill W
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Posts: 1,692
Default Savageduck insisted

On Wed, 29 Jul 2015 19:23:58 -0400, PeterN
wrote:

On 7/29/2015 3:41 PM, Bill W wrote:

snip


Yep, what happens with smallish objects is that I can't find them in
the viewfinder quickly enough, so then the camera starts to focus on
background or foreground objects, leaving the lens completely out of
focus for the subject I'm looking for, which then makes it harder yet
to find. It's mostly me, but also the fact that I'm not using the best
equipment for that sort of thing. Luckily, when something is just a
hobby, one doesn't need the best equipment for anything. I can live
with missed shots. It's not like I'm letting the Pulitzer get away.


Several years ago I was so fascinated watching whales breach, that I
forgot I had a camera. (And don't regret my failure to get the shots.)


I'm certainly not the first to say this, but sometimes a camera can
get in the way.
  #36  
Old July 30th 15, 01:18 AM posted to rec.photo.digital
Savageduck[_7_]
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Posts: 269
Default Savageduck insisted

On 2015-07-29 23:23:58 +0000, PeterN said:

On 7/29/2015 3:41 PM, Bill W wrote:

snip

Yep, what happens with smallish objects is that I can't find them in
the viewfinder quickly enough, so then the camera starts to focus on
background or foreground objects, leaving the lens completely out of
focus for the subject I'm looking for, which then makes it harder yet
to find. It's mostly me, but also the fact that I'm not using the best
equipment for that sort of thing. Luckily, when something is just a
hobby, one doesn't need the best equipment for anything. I can live
with missed shots. It's not like I'm letting the Pulitzer get away.


Several years ago I was so fascinated watching whales breach, that I
forgot I had a camera. (And don't regret my failure to get the shots.)


....but sometimes you can find a moment, or lapse of fascination, to
record the event.
https://db.tt/bjmbXh7S
https://db.tt/dUnDwEpR


--
Regards,

Savageduck

  #37  
Old July 30th 15, 01:38 AM posted to rec.photo.digital
PeterN[_6_]
external usenet poster
 
Posts: 4,254
Default Savageduck insisted

On 7/29/2015 8:18 PM, Savageduck wrote:
On 2015-07-29 23:23:58 +0000, PeterN said:

On 7/29/2015 3:41 PM, Bill W wrote:

snip

Yep, what happens with smallish objects is that I can't find them in
the viewfinder quickly enough, so then the camera starts to focus on
background or foreground objects, leaving the lens completely out of
focus for the subject I'm looking for, which then makes it harder yet
to find. It's mostly me, but also the fact that I'm not using the best
equipment for that sort of thing. Luckily, when something is just a
hobby, one doesn't need the best equipment for anything. I can live
with missed shots. It's not like I'm letting the Pulitzer get away.


Several years ago I was so fascinated watching whales breach, that I
forgot I had a camera. (And don't regret my failure to get the shots.)


...but sometimes you can find a moment, or lapse of fascination, to
record the event.
https://db.tt/bjmbXh7S
https://db.tt/dUnDwEpR



Nice captures.
Did the guy in the inflatable get swamped?


--
PeterN
  #38  
Old July 30th 15, 02:09 AM posted to rec.photo.digital
Savageduck[_7_]
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Posts: 269
Default Savageduck insisted

On 2015-07-30 00:38:53 +0000, PeterN said:

On 7/29/2015 8:18 PM, Savageduck wrote:
On 2015-07-29 23:23:58 +0000, PeterN said:

On 7/29/2015 3:41 PM, Bill W wrote:

snip

Yep, what happens with smallish objects is that I can't find them in
the viewfinder quickly enough, so then the camera starts to focus on
background or foreground objects, leaving the lens completely out of
focus for the subject I'm looking for, which then makes it harder yet
to find. It's mostly me, but also the fact that I'm not using the best
equipment for that sort of thing. Luckily, when something is just a
hobby, one doesn't need the best equipment for anything. I can live
with missed shots. It's not like I'm letting the Pulitzer get away.

Several years ago I was so fascinated watching whales breach, that I
forgot I had a camera. (And don't regret my failure to get the shots.)


...but sometimes you can find a moment, or lapse of fascination, to
record the event.
https://db.tt/bjmbXh7S
https://db.tt/dUnDwEpR



Nice captures.


Thanks.

Did the guy in the inflatable get swamped?


No, and it is a hard shell paddle ski-kayak, not an inflateable.

--
Regards,

Savageduck

 




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