Focus: Why I choose Servo focus over Single

May 8, 2016

Joseph Parry

Joseph Parry is a Commercial and Editorial photographer based in the UK that provides cinematic photography and ounces of humour. Follow him on Instagram for stories and kick ass imagery.

Focus: Why I choose Servo focus over Single

May 8, 2016

Joseph Parry

Joseph Parry is a Commercial and Editorial photographer based in the UK that provides cinematic photography and ounces of humour. Follow him on Instagram for stories and kick ass imagery.

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Have you ever thought about changing your focus setting on your camera? Or perhaps wanted to delve into more of the reasoning behind why you should (in my opinion) consider it?

First and foremost, what you choose to work in and you feel you work best in is entirely your choice, I’m just putting out there what’s worked for me and WHY I think it works for me.

Like many, when I first started taking pictures I started with the camera on auto, then moved to the A/S/P modes on the dial and lastly ended up at manual.

With each progression I found myself delving more and more into the little things that can help you get ahead of your hardware barriers and software limitations so that the only thing between you and a great picture is yourself and not your gear.

The more I transitioned to shallow apertures in my portraiture work the more and more accurate focus became paramount to nailing my shots. As I shoot handheld 99% of the time it’s important to me that the focus on my camera can keep up with the subtle movements of my breathing, swaying and recomposing.

As standard your DSLR is most likely set to “Single-AF”, Single AF means that once you half-press the shutter button, it focuses and the focus will not change untill you release the button. If this is the case it means that you’re using a focus mode best paired with a tripod for landscapes or shots with no movement on the focal plane (distance to and from the lens).

While Single-AF is often thought of as something you can use for portrait work and handheld activity I’m here today to try and break that mentality. I firmly believe, based on my own success in focus accuracy that if you are shooting anything except tripod-work for still scenes, you’re better off using Servo-AF / Continuous-AF.

Even now if you go and look online far too many places will rope in Single Area Focus as being acceptable for portrait work, or perhaps even the “go to” setting.

I firmly disagree this to be the best option based on the following:

We breathe,
Our balance causes us to sway,
Our subjects also do the same,
When we recompose an image (focus then recompose) we are moving again etc,

Often, as human beings our pre-emption is a true killer, think about a shooter before they pull the trigger on a gun, the untrained can often lift or twist the gun off target due to the preemptive feeling of the gun firing etc.

We are much the same with our cameras and we can use this to our advantage.

Here are my tips for nailing focus every time:

Breathe slowly, gently and press the shutter gently after you’ve pushed the breath out of your lungs. I remember fondly hearing in a Marksman documentary that the stillest you will ever be is after a few deep breaths and breathing outwards.

The pause you have after breathing out and before breathing in again (assuming you have taken in adequate oxygen in previous breaths) is the stillest you will ever be able to be without a tripod and the only thing contending with the absolute of such stillness, is your heartbeat.

Luckily for us, a heartbeat doesn’t create enough movement to throw off our focus, well at least from my experience, but breathing at f/1.2 certainly can!

Do we really need to put this much effort into everything before we push the shutter?

If you’re shooting at 1.8 or below then yes, I firmly believe you do, I believe it can make the difference between a pin sharp image and an out of focus one.

Stay relaxed,  stay focused ;)

And as I said before: “What you choose to work in and you feel you work best in is entirely your choice, I’m just putting out there what’s worked for me and WHY I think it works for me.”

Until next time!
-JP

P.S. On the subject of focus, here’s a great article on Backbutton Focusing if you want to complete decouple the shutter button from focusing.

 

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Joseph Parry

Joseph Parry

Joseph Parry is a Commercial and Editorial photographer based in the UK that provides cinematic photography and ounces of humour. Follow him on Instagram for stories and kick ass imagery.

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18 responses to “Focus: Why I choose Servo focus over Single”

  1. Renato Murakami Avatar
    Renato Murakami

    f/1.2 wide open hand held is crazy talk man! xD Difficult enough to nail f/1.4 wide open on a dodgy tripod…
    Thanks for sharing though Joseph!

    1. Joseph Parry Avatar
      Joseph Parry

      I shoot it almost all the time hahaha most of my shots on my website are 85 1.2 handheld :D certainly takes some practice! Shutter speed has to be above 1/250 as a minimum or I always get motion on the heavy 85mm not sure why!

      1. Pily Avatar
        Pily

        Do you have a Zhongyi Mitakon Speedmaster???I want comments on it!!! :P

        1. Pily Avatar
          Pily

          Well, maybe you don’t, the Zhongyi is only MF, right? :/

        2. Joseph Parry Avatar
          Joseph Parry

          I don’t I’m sorry!

  2. Rod Allsopp Avatar
    Rod Allsopp

    I was converted to AF-C and back button focusing, and it works for me. The best of all worlds.

    1. Joseph Parry Avatar
      Joseph Parry

      It rocks! :D

  3. Home Improvement & Decorating Ideas Avatar
    Home Improvement & Decorating Ideas

    It was funny. Keep on posting!

    1. Joseph Parry Avatar
      Joseph Parry

      Thanks!

  4. Shai Yammanee Avatar
    Shai Yammanee

    This is a great tip.
    I look forward to trying it out the next time I’m shooting hand held

    1. Joseph Parry Avatar
      Joseph Parry

      Thanks so much Shai! I wasn’t expecting this to help so many people, it’s truly wonderful to see the impact!

  5. fj1200 Avatar
    fj1200

    I’ve seen similar advice to this before. Shooting a rifle and shooting with a camera have very similar requirements in many respects. I’ll have to try this technique out – although most of my stuff is sports at around 1/1000s and so servo is my default, I do still take portrait type shots at the award presentations so will be interesting to see what happens. Don’t shoot at 1.2 though – my main weapon is a 70-200 f/2.8L.

    FWIW – I use back button focusing – took me ages to get used to it and at times I still want to go back to shutter button focusing but tbh I do now think it has the edge.

    1. Joseph Parry Avatar
      Joseph Parry

      Great lens! And really! Damn man, I love Backbutton, feels so natural for me now hahaha :D I know a lot of people who feel the same as you though, most of my friends prefer the half press shutter method.

  6. Peter Tellone Avatar
    Peter Tellone

    Just a reminder if you are “Focusing and recomposing” in servo… well you really can’t unless you change the focus point in use. In other words, if you recompose the servo will jump off your subject. So it would be more; place the focus point you want on the subject and follow

    1. Joseph Parry Avatar
      Joseph Parry

      I use centre point and recompose, works fine for me at f/1.2. I don’t continue to hold the button when the camera is recomposing.

      1. Peter Tellone Avatar
        Peter Tellone

        Right, when you release the button it stops AF, so at that point you have essentially “Locked Focus” which is what One Shot does… You’re not wrong in what you are doing, it IS a good way. But you are still locking focus…so if something moves once you release the button, you’re still back to square one. You’re just not taking multiple stabs like people do with “One shot” (Canon Term)

        1. Joseph Parry Avatar
          Joseph Parry

          Of course, this just makes sure the initial focus is more accurate imo, because we are ALWAYS moving.

  7. Pily Avatar
    Pily

    Thanks! exactly the doubt I always have had