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Manual focus is the direct control of a camera/lens's focus by the photographer. This is generally accomplished by turning a focus ring which is mechanically coupled to the lens's focus, but some cameras without focus rings allow manual control over the autofocus motor.

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Mamiya 645 Pro TL focusing [on hold]

What's the trick to reliably focus on a Mamiya 645 Pro TL?
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1answer
138 views

How exactly Is the focus distance of a Leica M lens mechanically transmitted to the body?

Basically speaking, when a camera focuses on something, it focuses on a certain distance. That means everything that is this distance away from the camera will be in focus and sharp in the image. ...
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3answers
105 views

Focusing issues with Nikon 18-35mm f3.5-4.5D on D3200

I have a Nikon D3200 and I have used in the past year and half a 35mm f/1.8 G DX prime lens . I have rented several other lenses and I also have a 50mm 1.8G prime too (I'm sure that some of you will ...
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1answer
59 views

Canon 55-250, Rebel/XS, fails on *manual* focus?

I realize this is rather old hardware, at least as digital goes, but I'm hoping to hand it down to a friend as a starter kit. Every once in a while, my Digital Rebel XS will refuse to take a shot ...
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1answer
99 views

Technique to manually set aperture and focus for a low light scene during normally lit time of day?

I have a scenario that requires manually setting the aperture and focus on a lens attached to a machine vision camera on an outdoor scene (mirrorless camera with global shutter). I need to manually ...
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2answers
211 views

Canon 5D - Focus viewfinder indicators in Manual focus mode

On a Canon 5D MkIII, is there anyway to see the autofocus lock boxes on screen while manually focusing (showing the areas the camera detects as in focus)? This might just be an insane product of my ...
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1answer
65 views

5D Autofocus - disable tracking after lock?

I recently got a 5Dmk3 and it's been a really fun toy so far. I'm coming from a Canon 7D, so I'm trying to adjust to the much more complicated autofocus system. I've read the manual and looked around ...
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65 views

Fujifilm S1: Manual focus does nothing?

The best example of my problem is when using any level of optical zoom with autofocus. When I press the AF button before shooting, it will scan as it does and hit the sweet focus spot where everything ...
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2answers
237 views

How does ground glass work when focussing?

To use ground glass, I turn the focusing ring on my lens until the image becomes clear on the glass. But what is it about the glass that makes this work? What are the physics involved?
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1answer
114 views

How do prime lens allow variance of focal length when focusing? [duplicate]

If the definition of prime lens says that their focal length is fixed, then how come you can still alter the focal length when focusing? (either MF or AF)
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1answer
103 views

Can the Canon EF-M camera use the focus by wire lenses?

The old Canon film camera EF-M did not have auto focus ability and was manual focus only. Does it support the focus by wire lenses in the EOS line? Does it even have any electrical connectors in the ...
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2answers
121 views

Why is the battery required to manually focus through the viewfinder?

Is it normal that I can't manual focus any of my lenses on my 5D MK iii without having a battery inserted? I can focus on an object, and while looking through the view finder, remove the battery and ...
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2answers
428 views

Do focusing screens exist for modern DSLRs?

Recently I bought a second hand Nikon EM. I found that these analog cameras used a very neat trick to focus. After some googling I found that this is called the "focusing screen". Do focusing ...
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1answer
253 views

can i transform my manual focus lens into an autofocus lens?

I have a Nikon D3300 camera. And I bought a 55-300mm nikkor lens but this lens is not an autofocus lens, so when shooting I should manually focus and sometimes the photos are blurry. Is there any ...
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0answers
58 views

Manual and Autofocus not working on near field with Canon Rebel T3

I dropped my camera on a tile floor the other day and everything appeared fine. My wife tried to take some close up pictures of a gift today and found that the Auto Focus wouldn't work on close field ...
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1answer
71 views

Why is manual focus off after installing a 45° split-prism focus screen?

I recently bought a new focus screen for my D5100. I installed it without any problems. But, if I manually focus with the screen it is not correct. A picture of something 30ft away is about a foot ...
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3answers
514 views

What is the correct, standard EXIF metadata to add for Rokinon 8mm fisheye lenses?

I own a Rokinon 8mm Ultra Wide Angle f/3.5 Fisheye Lens for Canon EF Mount. This is a manual lens not electrically connect to the Canon 60D body I use it with. With exiftool I want to add the correct ...
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3answers
162 views

What exactly happens when one turns the focus ring on a DSLR while shooting video?

I'm about to buy my first DSLR and I'm trying to understand every single aspect of it. If I've got a prime lenses and I'm shooting a video with f/2.8 aperture, I'm going to have a fixed depth of ...
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3answers
146 views

Does hyperfocal distance only apply to manual focussing?

At any given aperture and focal length, I can still focus on something near or something far away by simply touching the lcd on my dslr. Does that mean that because I may not be focussing at the ...
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1answer
302 views

Canon EOS SL1 - Manual focus stopped working

I recently purchased a Canon EOS Rebel DSLR SL1. My 18-55 mm lens shoots amazingly, and I have been using it in auto and manual focus. About a week ago, my manual focus randomly stopped working. The ...
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1answer
225 views

Can you use EOS Utility to Manual Focus whilst remote shooting movies? [closed]

I have a 700D and want to use EOS Utility remote shooting to make videos. I want to avoid using Auto Focus as it is SO loud as it constantly focuses. I can't seem to find a way to manually focus ...
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0answers
31 views

Focus Effect for Canon Powershot SX520 [duplicate]

How can I achieve a focus effect for Canon Powershot SX520? Something like this: Thanks!
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2answers
478 views

How does autofocus confirm work with manual lenses?

When I was a kid my dad had an Olympus OM10, he had a bunch of lenses for it and I remember focusing was done with a special circle in the middle of the viewfinder, where you pointed it at the thing ...
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1answer
66 views

Issue with Object focus using canon 1100d [closed]

I am newbie in photography.Recently i bought a canon 1100 D . When i am taking photo , for example taking photos of bird, not getting clear photo of bird.Mode is manual and ISO is 400..Please help me ...
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2answers
298 views

How can I use a vintage M42 manual prime on an entry Nikon DSLR?

I have got an old lens Helios 44-2 (58mm f/2 M42 mount) that I want to use for portraits on my Nikon D3100. I used an adapter (without optical element) to mount the lens. I want to really try this ...
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1answer
302 views

Sony a77 doesn't recognize Rokinon 85mm manual lens

So, I'm having a bit of an odd issue with my Sony a77. When I mount my Rokinon 85mm lens to my Sony a77, it acts as though I haven't attached a lens at all. What's up with that? O.o
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2answers
80 views

Find focus and effective range of single focus camera

I have a cheap camera that is supposed to take videos underwater. It is a camera in a case that is set to a single focus. I checked the specs and it is a manual set focus camera. When I asked the ...
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0answers
42 views

How can I shoot a photo, through a gun barrel? [duplicate]

I'm trying to get a photo, down the barrel of a gun, without photoshop, preferably to be well exposed in and out of the barrel (mostly to be better exposed on the outside of it, though a double ...
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2answers
625 views

Why does this lens lose focus when you zoom in but not when you zoom out?

This is regarding the Sony 18-105 E-mount constant-aperture zoom. I took at photo at 18mm, focusing manually: I then zoomed to 105mm, and took another photo, keeping the same focus: Notice that ...
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1answer
161 views

How does a focus ring bring a subject in or out of focus?

When you manually adjust your focus ring on the lens, what actually happens inside the lens? Is this changing simply the point at which the lens is focusing, so that anything at this distance away ...
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2answers
476 views

Focusing Screen for a Canon 60D using an 85mm f1.2 lens

I've recently bought an 85mm f1.2 lens, which is absolutely amazing, but I noticed after my day out playing with it, that lots of my photos were out of focus, even though they appeared sharp in the ...
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0answers
90 views

What would cause an AF confirmation light to go on and off as I approach correct focus?

I'm using two cameras: Canon EOS 400D (Digital Rebel XTi) and Canon EOS 450D (EOS Rebel XSi). 450D was more heavily used than 400D. Not so long ago I noticed that 450D's autofocus system works not ...
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2answers
151 views

How can I focus on the moon [duplicate]

I'm technically a beginner when it comes to anything other than point and shoot photography so I apologise if I don't explain myself clearly. I have a Pentax Q with an 85-200mm K lens, I'm using a Q ...
4
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1answer
3k views

Why do I keep getting out of focus shots on manual focus?

I have a Nikon D3300. I recently switched over into complete manual mode (on the camera) with manual focus (on the lens). I find that the camera does not focus at all. All I get is out-of-focus shots. ...
4
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3answers
235 views

Why is there a difference between the shutter lag times for prefocus and for manual focus?

In my lab I have two cameras, the Canon T2i and the Canon T3i, which are without their standard lenses. Instead they are mounted on a microscope. To capture the images of my samples, I set the camera ...
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1answer
1k views

How do I set the manual focus magnification on the Sony NEX-5R?

The NEX-5R has a manual assist function: if you enable it, and put the camera in manual focus mode, then when you rotate the focus ring, the camera shows a magnified view so that you can focus better. ...
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1answer
101 views

Why is the external lens for my smartphone blurry when not at full zoom?

I've just bought an optical zoom lens for my Samsung S4 (I'm a web developer and blogger so I thought that it would be a handy tool for taking photo's when out and about without my main camera). The ...
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1answer
185 views

How do I focus at a specific distance (in meters)?

When I use the manual focus mode, I usually adjust it until the object I care about comes into focus. But sometimes the object is not there yet, so I'd like to know if there is a way for me to tell ...
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1answer
166 views

Does manual focus carry over to a different aperture, lens or focal length?

This is in the manual focus mode. If I focus my lens so that a certain object is clear and crisp, and then do one of the following, will I have to focus again? Change the aperture Switch to a ...
0
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1answer
98 views

Why does the focus light come on in manual focus mode?

When I'm in the manual focus mode, I find that the focus light (the red blinking light) sometimes still comes on before it takes a photo. Why is this? I thought the purpose of the light is to ...
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3answers
694 views

How can I get accurate manual focus with an Olympus E-PL3 without having to zoom 5× every time?

I've just a Voigtlaender 35 mm / F 1.4 for my Olympus E-PL3 (using M-mount converter for Micro 4/3) Since this lens only support manual focus, so I need to zoom 5x every time to check if my focus is ...
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1answer
87 views

How can I confirm focus with a Nikkor 70-300 lens on a D3000?

Good day! I would like to have some suggestion from experienced photographers about following matter: I have a Nikon D3000 Camera. I bought a Nikkor Lens 70-300mm having not motor inside and unable ...
2
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1answer
263 views

Tamron 90mm SP Macro manual focus locks

I've been shooting film on a Canon AE-1 Program with a Tamron 90mm Macro SP lens. Until recently, the lens worked perfectly, but all of a sudden it won't focus farther than 10ft. To my knowledge it ...
6
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1answer
1k views

Nikon focus confirmation with manual lenses

I've recently purchased a Nikon D600 and would like to use my old Minolta Rokkor 50mm f/1.4 on it. However I am quite confused as to the functions of a "chipped adapter". While I know that with Canon ...
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3answers
387 views

Do focus area modes matter if shooting in manual focus?

It seems my camera lets me change the focus area modes (e.g wide, center or spot) even when I am shooting in manual focus so I am trying to understand if area modes matter even if the camera is in ...
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2answers
179 views

Pentaprism viewfinder and used “pro” gear - really better for manual lenses?

I currently use an Olympus E-520 with an adapted Tamron 35-135 (manual lens from the '80s), and manual focusing is very difficult and hard to get right. Looking in the viewfinder, spinning the focus ...
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2answers
943 views

Why does my Samsung NX1000 zoom way in when manually focusing?

I bought a Samsung NX1000 this week, and I have the 20-50mm lens. However when I put it on manual focus, the picture keeps jumping from standard zoom to "mega zoom" — it zooms a lot further in then ...
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2answers
230 views

Is it possible to DIY adjust the focus ring distance scale of a lens?

I have a particular lens in mind, but is it generally possible to do this adjustment? Of course there are a lot of lenses that don't have any distance scale to begin with. Many lenses have the scale ...
2
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1answer
414 views

Can I manual adjust focus after half shutter press?

I'm new to the world of DSLR shooting. I just got a Canon t5i with a 18-135 IS STM lens. I've gone into manual mode and played around with the lens on manual focus, and the AF to single shot. I ...
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1answer
208 views

Can I filter by autofocus in Lightroom?

Does Lightroom let me filter photos by whether they were manually focused? Or is this information not even stored in the ARW metadata? (I'm assuming they were not lost during DNG conversion in ...