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Tack Sharp Focus
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Dec 10, 2021 20:17:11   #
CHG_CANON Loc: the Windy City
 
MRHooker2u wrote:
Sorry for the delayed response. I had to be out for a bit. The only prime I have is a Nikkor-H Auto 28 mm 1:3.5 I inherited from my dad so it is 60's vintage glass. I follow what you are saying about zooming in or getting closer. What bothers me is when I read that everything from the hyperfocal distance and beyond should be in focus and sharp. I do not find my landscape images to be that way. This begs the question, is the quality of the glass (or lack of) resulting in a soft image?


You need to use <QUOTE REPLY> to have any hope of asking a specific follow-up question back to anyone specifically. Expecting everything in an image to be 'in focus and sharp' is either a misreading or a misunderstanding of hyperfocus. Look at the 1:1 crop example above. Are the rocks at the focus point out of focus? At the distance of the camera to these small details at 24mm, they're in focus enough. Looking at the details beyond their 1:1 pixel-level detail will only make those details softer as the digital sensor captures at pixels and our computer monitors display at pixels. That 1:1 (one to one) mapping of pixels is the maximum level of detail available in the file. If you want to see more 'details' of that small section of the image, you need to be closer so that those details better cover more pixels on the sensor.

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Dec 10, 2021 20:39:30   #
therwol Loc: USA
 
Grahame wrote:
Here's the image, shadows lifted, no additional sharpening and downsized to 1920 px wide. I picked 1920 px because I consider it a sensible common size that the vast majority would view it on their monitor.

Does this need to be "any sharper"? If it were sharpened any more would it not look cooked or unnatural?


Actually, I think that this picture is sharp enough. I don't think that anyone would be critical of the picture displayed on a typical or even large computer screen. You are the one with doubts. Your combination of a 24 megapixel camera and a good, but not outstanding lens, gives you a pretty good picture. My experience with a D810 and this lens is that I have lenses that show more detail under scrutiny. I think you have nothing to worry about.

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Dec 10, 2021 20:50:04   #
MRHooker2u Loc: Kingston, WA
 
CHG_CANON wrote:
You need to use <QUOTE REPLY> to have any hope of asking a specific follow-up question back to anyone specifically. Expecting everything in an image to be 'in focus and sharp' is either a misreading or a misunderstanding of hyperfocus. Look at the 1:1 crop example above. Are the rocks at the focus point out of focus? At the distance of the camera to these small details at 24mm, they're in focus enough. Looking at the details beyond their 1:1 pixel-level detail will only make those details softer as the digital sensor captures at pixels and our computer monitors display at pixels. That 1:1 (one to one) mapping of pixels is the maximum level of detail available in the file. If you want to see more 'details' of that small section of the image, you need to be closer so that those details better cover more pixels on the sensor.
You need to use <QUOTE REPLY> to have any ho... (show quote)


Thanks, I appreciate your explanation and your time. So, from what you are telling me then is that for this particular kit lens it is functioning as it should.

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Dec 10, 2021 20:55:03   #
CHG_CANON Loc: the Windy City
 
MRHooker2u wrote:
Thanks, I appreciate your explanation and your time. So, from what you are telling me then is that for this particular kit lens it is functioning as it should.


For the examples presented, yes, functioning within normal parameters. Try finding situations (test and actual) that allow closer focus and / or clearer composition. The white tank example, the logo would seem the logical place to focus, not the rocks below. The fence and trees, and your hyperfocal distance idea, focusing on a middle distance would make sense, something on the same plane as the building between the closer fence and the further trees.

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Dec 11, 2021 06:46:09   #
tcthome Loc: NJ
 
CHG_CANON wrote:
When I download and look at your first image in Capture NX-D, there are no active focus points. It's also shot at 1/20 sec at a 105mm focal length. This raises several questions:

1. How are you focusing? Why are there no active focus points?
1a. The image reports Affinity Photo, possibly this software has suppressed the AF information in the EXIF. We need an original version of the image, not using Affinity. Be sure to store the unprocessed JPEG attachment.
2. Was this image captured on a tripod or handheld?
3. You say AF-S. Does the camera beep a focus confirmation? If beep off, do you half-press the shutter for a second or so and allow the camera to focus?
4. Are you using selective focus with a single AF point or group / zone? For this first image, where did you want to focus?
5. Given the first image is not anywhere near in-focus, are you using the camera / lens Auto Focus feature?
6. Have you considered the ideas presented as: How to obtain sharp images in digital photography

You don't need software to sharpen out of focus images. Please provide details for the questions and an original image direct from the camera, without the EXIF being suppressed / stripped.
When I download and look at your first image in Ca... (show quote)


I usually use LR6 for most of my photo editing or adjustments but, every now & then I will use AP for a full edit with no problems.

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Dec 11, 2021 06:52:53   #
tcthome Loc: NJ
 
PHRubin wrote:
In addition to above, even with image stabilization, 1/20 sec shutter speed is iffy.


I do slower than that without no issues. The lens should auto focus. With that said it sounds like he might of used auto fine tune that Nikon has to adjust the lens/camera combo. If understand it correctly, for zoom lens you should tune the lens for the focal length that is used the most. If I'm wrong please correct.

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Dec 11, 2021 06:56:39   #
LEWHITE7747 Loc: 33773
 
tcthome wrote:
I do slower than that without no issues. The lens should auto focus. With that said it sounds like he might of used auto fine tune that Nikon has to adjust the lens/camera combo. If understand it correctly, for zoom lens you should tune the lens for the focal length that is used the most. If I'm wrong please correct.


Canon has 2 fine calibration adjustments. Nikon has only one

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Dec 11, 2021 07:17:16   #
tcthome Loc: NJ
 
If you can manually focus & get a good photo & can't get a in focus using AF, send it to Nikon. If I understand it correctly, AF Fine Tune works on the focal length you tune it at with a zoom lens. So you would pick the most used focal length & adjust the fine tune for that focal length & live with the rest. Quality of tripod & head? One thing to add to your shooting method is to use exposure delay. = it waits a second or two to take the photo after the shutter opens. (you press your remote shutter release) I do this when on a tripod & want tack sharp photos. On my Nikon ( D810 ) it is in the Custom Setting Menu/ C Timers/ AE Lock/ d4 Exposure delay with a choice of OFF or-1S-2S-3s. I use 2 seconds. I also use the self timer instead of the remote most of the time. Hope you figure it out.

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Dec 11, 2021 09:07:46   #
DirtFarmer Loc: Escaped from the NYC area, back to MA
 
MRHooker2u wrote:
Sorry for the delayed response. I had to be out for a bit. The only prime I have is a Nikkor-H Auto 28 mm 1:3.5 I inherited from my dad so it is 60's vintage glass. I follow what you are saying about zooming in or getting closer. What bothers me is when I read that everything from the hyperfocal distance and beyond should be in focus and sharp. I do not find my landscape images to be that way. This begs the question, is the quality of the glass (or lack of) resulting in a soft image?


The hyperfocal distance is that distance at which the sharpness isn't perfect but it isn't too far out of focus. As you might expect, the hyperfocal distance is not a sharp divide between in focus and out of focus. It is subjective. It all depends on how far out of focus you can tolerate.

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Dec 11, 2021 11:16:46   #
Delderby Loc: Derby UK
 
MRHooker2u wrote:
I appreciate your candid response. I have followed your posts since I became a member of UHH and feel I have and will learn a lot through the advice you give each week. I took up photography only a few years ago so I am still learning when to apply certain settings and what type of adjustments to make on my camera. When I get into the field, I invariably forget to adjust some critical setting to the photo. Since you seem to present the most pointed questions, I chose to answer you directly and would appreciate any other comments you might have.

To explain my setup, until I read your post on Sharp Images in Digital Photography, I had my camera set to AF-S. You suggest AF-C so I made that change with single point (S). I compose the scene in Live View, zoom in to my focus point and have always used BBF to sharpen the image. I use either spot metering or center weighted avg. metering. If I feel there is a need to make an adjustment with my focus ring, I try to do so but the movement of the focus ring is not very smooth so I usually rely on autofocus.
I always have my camera mounted on my tripod (Manfrotto 055XPROB). It is not a flimsy tripod so there should not be any camera shake due to that. I ensure I have the camera/tripod as stable as I can get it and do everything to eliminate any camera movement. To take the photo I usually use either a remote shutter release or a two second timer on the shutter. Unless I am missing a critical setting, I feel the settings on my camera and the mounting of the camera on the tripod (in this case sitting on my driveway) should eliminate any possibility of motion blur.

One of the responders mentioned the images I uploaded did not reflect a landscape photo so I took a new photo to show the issue I am having. I captured a screen shot just to show the focus point (on the center tree about 1/3 up in the image) as well as some EXIF data. I feel the distance to the trees could well reflect the hyperfocal distance of a landscape scene. The zoomed photos No's 3,4 & 5, are at 100%, 200% and 300% respectively.

With my equipment and setup I feel I should be getting better photos than what I am getting. I would appreciate your insight and comments. If you feel it is a non-issue I would appreciate telling me so. If you feel I should have my camera and lens evaluated, I would appreciate that as well. Thank You!
I appreciate your candid response. I have followe... (show quote)


Forget the tech - you have a soft (bad) copy of the lens. If you want tack sharp - don't buy a zoom with a range of more than X3 or X4. All digital camera pics benefit from some sharpening - just don't over do it.

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Dec 11, 2021 11:23:34   #
joer Loc: Colorado/Illinois
 
Part of the problem is that the 24-120 is not all that sharp. DXO gives it a sharpness score of 11 on the D800E. as a point of reference the 85 1.8 z rates 41 on the Z7.

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Dec 11, 2021 12:22:48   #
kenabr Loc: S.E.Wisconsin
 
Use back button focus and single point focus. What iso requires 1/20 sec. exposure. What f stop are you using? We do need to see where you focused.

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Dec 12, 2021 11:48:13   #
Dikdik Loc: Winnipeg, Canada
 
Does that signature ever detract from what could have been a nice photo.

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Dec 12, 2021 12:44:06   #
Thomas902 Loc: Washington DC
 
"...Canon has 2 fine calibration adjustments. Nikon has only one..." You're a tad behind times LEWHITE7747, Nikon has actually caught up to Canon.

"Nikon announced the D780 in January 2020, it's the first Nikon camera that allows “two point adjustment” – AF Fine Tuning at BOTH ends of the the focal range for zoom lenses!"

That said, I've been migrating to primes only... Not only does this go a long way toward mitigation of focus challenges it significantly reduces an optic's weight. So funny how I began shooting commercially on primes and I'm returning to same after decades of abuse by all those zoom optics' shortcomings.

But wait! Mirrorless changes everything with contrast detection auto focus... Issues with phase detection focus accuracy may no longer a variable in the equation moving forward...

Best Advice? Shoot Primes :) Works for me...

btw, I totally agree with Joe, the lens in question isn't the "Sharpest" optic either...
Virtually all Nikon's 85mm primes puts it to shame...

Hope this helps...

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Dec 12, 2021 12:55:58   #
LEWHITE7747 Loc: 33773
 
Thomas902 wrote:
"...Canon has 2 fine calibration adjustments. Nikon has only one..." You're a tad behind times LEWHITE7747, Nikon has actually caught up to Canon.

"Nikon announced the D780 in January 2020, it's the first Nikon camera that allows “two point adjustment” – AF Fine Tuning at BOTH ends of the the focal range for zoom lenses!"

That said, I've been migrating to primes only... Not only does this go a long way toward mitigation of focus challenges it significantly reduces an optic's weight. So funny how I began shooting commercially on primes and I'm returning to same after decades of abuse by all those zoom optics' shortcomings.

But wait! Mirrorless changes everything with contrast detection auto focus... Issues with phase detection focus accuracy may no longer a variable in the equation moving forward...

Best Advice? Shoot Primes :) Works for me...

btw, I totally agree with Joe, the lens in question isn't the "Sharpest" optic either...
Virtually all Nikon's 85mm primes puts it to shame...

Hope this helps...
"...Canon has 2 fine calibration adjustments.... (show quote)


My bad, Nikon has finally caught up to Canon on calibration.

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