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Which Nikon DSLRs have an autofocus motor in camera body?

I have a Nikon D3000 and a lens which has no autofocus motor. But under the lens, I have found a screw which rotates with the focusing control. My D3000 does not have any autofocus motor inside the...

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Why do higher end lenses use USM instead of STM?

Canon has a newer type of motor, called STM, which is introduced in lenses like 18-135 f/3.5-5.6 IS STM, 40 f/2.8 STM and so on. STM also provides quick, silent and smooth focusing. Even the focusing...

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Will any non-AF lens work on a Nikon camera with built in AF already in the...

I want to purchase a camera with a built in autofocus motor, but I want to know if lenses without autofocus will then focus automatically on that camera body. In other words, can I buy a Nikon camera...

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DSLR in AF mode. Do we need to use Focus ring on lens?

My camera is in Auto Focus mode (AF). As my understanding, the camera will focus on subject automatically. But when I rotate the focus ring, the focus subject points will change, too. I don’t...

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Which Nikon DSLRs have an autofocus motor in camera body? [closed]

I have a Nikon D3000 and a lens which has no autofocus motor. But under the lens, I have found a screw which rotates with the focusing control. My D3000 does not have any autofocus motor inside the...

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Why does the lens motor in my Canon 400mm f/2.8L USM keep working even though...

I’ve just bought a Canon EF 400mm f/2.8 USM IS, and although I have perfect focus, the USM still works. It also works when I press the shutter button halfway. But I set the focus to another button. Is...

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Why are photos taken with my old lenses all out of focus on my new Nikon...

My Nikon D80 died, and I was bought a new D5300, body only. All the photographs are out of focus when I use the lenses I used with my D80. Why would this be? I’m using the Sigma 18-50 f/3.5-5.6 DC,...

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Does having an autofocus motor in body vs lens affect image stabilization or...

This question already has an answer here: How do camera body motors compare to in-lens motors for focusing? 4 answers Does “the same” lens, with different autofocus systems, have the same optical...

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My lens's focus ring can be twisted past infinity and the close-focus stops...

I have a AF-S Nikkor 50mm 1:1.8 G lens which I use for my Nikon D3100 and D3300 cameras. Today, I noticed that the focus ring can be twisted past the infinity and 0.45m focus stops. It can be turned...

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Difference of auto-focus motor?

What is the difference of ultrasonic motor, stepper motor, and electromagnetic drive? Which one of these are lens-based or screwdrive? What are the advantages of lens-based servo over screwdrive and...

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