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D750 how to get the entire picture in focus?

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RvEL

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Using an 85mm 1.8G lens, I tend to stop down to F5.6 or even F11 to get everything in focus.

However, the AF often is focussing on something in the foreground, e.g. a leaf or a person etc, and blur what further in the back.

Is there a way to avoid this? I always thought that choosing a high F rate should not blur the background.

Thanks!
 
You won’t get a blurry background if you focus closely. Don’t let the camera select the focus point.
 
You didn't mention the focus mode you're using. If you go to single point, you can select what is in focus and what is not. If you're in area focus, even with the skimpy focus area of the D750 (I own 2), the camera will make the decision for you.
 
Thanks all! I was indeed in area focus, rather than single point. So I should either go in AF-S Single Point or AF-C Single Point? How do I make sure that evening is in focus? Cause when I have a single focus point, I am able to select a spot, which will be in focus. But not the entire frame, isn't it?
 
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RvEL said:
Thanks all! I was indeed in area focus, rather than single point. So I should either go in AF-S Single Point or AF-C Single Point? How do I make sure that evening is in focus? Cause when I have a single focus point, I am able to select a spot, which will be in focus. But not the entire frame, isn't it?
Click to expand...
Read a previous post to goto to a DoF link to learn more. It also depends on what you men by everything in focus, do you mean the whole scene (then use f11) or just the main subject (f5.6 to f8). Also remember the closer you are to the subject the less DoF you get.
 
RvEL said:
Thanks all! I was indeed in area focus, rather than single point. So I should either go in AF-S Single Point or AF-C Single Point? How do I make sure that evening is in focus? Cause when I have a single focus point, I am able to select a spot, which will be in focus. But not the entire frame, isn't it?
Click to expand...
Your Focus Mode doesn't change DOF. DOF is basically a function of Aperture and reproduction ratio, it doesn't matter how you or the camera decided where you want your focus plane to be.
 
RvEL said:
Thanks all! I was indeed in area focus, rather than single point. So I should either go in AF-S Single Point or AF-C Single Point? How do I make sure that evening is in focus? Cause when I have a single focus point, I am able to select a spot, which will be in focus. But not the entire frame, isn't it?
Click to expand...
Imagine a geometric plane at your focus distance, extending completely across the scene. Only objects on this plane of focus are going to be sharply in focus. Things will become blurrier in proportion to how far in front of or behind they are from this plane of focus.
 
Mark Scott Abeln said:
RvEL said:
Thanks all! I was indeed in area focus, rather than single point. So I should either go in AF-S Single Point or AF-C Single Point? How do I make sure that evening is in focus? Cause when I have a single focus point, I am able to select a spot, which will be in focus. But not the entire frame, isn't it?
Click to expand...
Imagine a geometric plane at your focus distance, extending completely across the scene. Only objects on this plane of focus are going to be sharply in focus. Things will become blurrier in proportion to how far in front of or behind they are from this plane of focus.
Click to expand...
 
RvEL said:
But it should be an option to get EVERYTHING in focus, isn't it? No DoF at all. :)
Click to expand...
I'll just assume you're making something of a joke.

There's really no such thing as "everything in focus". Only the single plane of focus is actually "in focus". After that it is just a matter of what is considered "acceptable focus".

What scene are you capturing where you want everything in focus? A scene with sharp objects 5 feet away all the way to infinity? Depending on what focal length lens you use you might be able to get acceptable focus at f/5.6 or you might have to stop down to f/22.
 
RvEL said:
Mark Scott Abeln said:
RvEL said:
Thanks all! I was indeed in area focus, rather than single point. So I should either go in AF-S Single Point or AF-C Single Point? How do I make sure that evening is in focus? Cause when I have a single focus point, I am able to select a spot, which will be in focus. But not the entire frame, isn't it?
Click to expand...
Imagine a geometric plane at your focus distance, extending completely across the scene. Only objects on this plane of focus are going to be sharply in focus. Things will become blurrier in proportion to how far in front of or behind they are from this plane of focus.
Click to expand...
But it should be an option to get EVERYTHING in focus, isn't it? No DoF at all. :)
Click to expand...
There is; use a phone with a very tiny sensor and focus at infinity ;-)

More to the point: why not follow a basic photography course as opposed to hammer the forum with all these beginner questions?

--
Philip
 
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I did follow 2 training cideos on the D750.

Still, why would you mind me posting 2-3 topics with a beginners question (which weren't part of the videos I followed)?

You could easily skip them. ;-)

The other 2 topics I posted were regarding issues I faced. They were unrelated to the default usage of the camera.

If this forum isn't for this kind of questions (seek help), share wisdom, and photos, then what's it for?
 
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RvEL said:
I did follow 2 training cideos on the D750.

Still, why would you mind me posting 2-3 topics with a beginners question (which weren't part of the videos I followed)?

You could easily skip them. ;-)

The other 2 topics I posted were regarding issues I faced. They were unrelated to the default usage of the camera.

If this forum isn't for this kind of questions (seek help), share wisdom, and photos, then what's it for?
Click to expand...
The questions are extremely low-level. You want the experienced crowd here to use their time to hammer answers to questions you could easily find in seconds by a search either on this site or on the Internet as a whole. It's also a matter of respect; ask these questions in the beginners forum if you're too lazy to try and educate yourself by searching.
 
Flashlight said:
RvEL said:
I did follow 2 training cideos on the D750.

Still, why would you mind me posting 2-3 topics with a beginners question (which weren't part of the videos I followed)?

You could easily skip them. ;-)

The other 2 topics I posted were regarding issues I faced. They were unrelated to the default usage of the camera.

If this forum isn't for this kind of questions (seek help), share wisdom, and photos, then what's it for?
Click to expand...
The questions are extremely low-level. You want the experienced crowd here to use their time to hammer answers to questions you could easily find in seconds by a search either on this site or on the Internet as a whole. It's also a matter of respect; ask these questions in the beginners forum if you're too lazy to try and educate yourself by searching.
Click to expand...
 
RvEL said:
But it should be an option to get EVERYTHING in focus, isn't it? No DoF at all. :)
Click to expand...
By stepping down the aperture to f22 you will get more and more in focus, especially using wide angle lens. The problem with f22 it starts to introduce problems in the sharpness of the picture itself called aberrations.

You have bought a camera with a large sensors. Large sensors have a very defined DoF performance which you ned to learn about.

Look at https://www.photopills.com/calculators/dof-table to see how apertures and subject distance affect DoF. While there also look at hyperfocal distance which explains what aperture and distance to subject is used to get as much into focus upto infinity as possible.

Also Nikon have a lot of tuorials on their website as do Panasonic. Going through these may help you. I'd start with the Panasonic basic courses.

Loading…

av.jpn.support.panasonic.com

Loading…

www.nikonusa.com


Please don't quote long posts, it just fills up the forum with repetitive information. Just replying to the poster or selectively quoting will make it all easier to read.
 
RvEL said:
Of course, I might have read the whole 500 page manual first, but in this case I went ahead and just asked.
Click to expand...
Before I even buy anything new I make sure I read the whole manual so I know it does what I want it to do before laying down the money. And yes, after using Nikon for over 40 years I can skip some sections...

Good to read you'll be concentrating on the beginners forum.

It's no big deal to ask specific beginners questions here once in a while if you can't find the answer readily enough. Just make sure to do some research first.

Do yourself a favor and buy the D750 guide from Thom Hogan and read it front to back: http://www.dslrbodies.com/books/bythom-complete-guides-/nikon-d750-guide.html

It takes some effort but after a few days of intensive reading you'll be answering questions here intelligently in stead of asking them stupidly, as it's basically a very good introduction course to digital photography as a whole while centered around the D750. Best $30 you'll ever spend.

Good luck.
 
"By stepping down the aperture to f22 you will get more and more in focus"

Oh, come on. I wouldn't have stopped reading your post when I did if you had said something like "By stepping down the aperture to f22 you will appear to get more and more in acceptable focus..." But you didn't say that. I did catch a reference to diffraction in the next line or so, but that doesn't really let you off the hook.

I'm not sure if our OP is pulling our legs with the questions asked in this thread and others - I think the clue that it is a leg pull may lie in some of the responses, rather than the original question.
 
RvEL said:
Using an 85mm 1.8G lens, I tend to stop down to F5.6 or even F11 to get everything in focus.
Click to expand...
Most of the time, that won't work. Using an online depth of field calculator:

Online Depth of Field Calculator

Depth of field and hyperfocal distance calculator
www.dofmaster.com

we see that if you're focused at a distance of 10 feet and are at f/11, you have a depth of field of less than 3 feet. Even at f/22, your DoF is only 6 feet.
RvEL said:
However, the AF often is focussing on something in the foreground, e.g. a leaf or a person etc, and blur what further in the back.
Click to expand...
You have to take charge of that by using a single AF point and focusing where you want.
RvEL said:
Is there a way to avoid this? I always thought that choosing a high F rate should not blur the background.
Click to expand...
If you want a lot of depth of field, don't use a D750 with an 85mm lens.
 
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