Change F Stop On Sony A7iii

By | 25/10/2022

This chapter is from the book

1000: Manual Mode

manual.jpg

Once upon a time, long before digital cameras and programmed modes, there was manual mode. In those days information technology wasn’t called “manual mode,” because at that place were no other modes. It was merely photography. In fact, many photographers, including me, cut their teeth on completely manual cameras. Permit’s face it—if you want to learn the effects of discontinuity and shutter speed on your photography, there is no better way to acquire than past setting these adjustments yourself. Only today, with the advancement of camera applied science, many new photographers never give this fashion a second thought. That’s truly a shame, as not only is it an excellent way to acquire your photography basics, it’s also an essential tool to have in your photographic bag of tricks.

When y’all have your photographic camera ready to Manual (G) mode, the camera meter will give you a reading of the scene you are photographing. Information technology’s your chore, though, to set both the f-stop (aperture) and the shutter speed to attain a correct exposure. If y’all need a faster shutter speed, you will have to make the reciprocal modify to your f-stop. Using whatever other way, such every bit S or A, would mean that you lot just have to worry virtually one of these changes, but Manual mode means you lot accept to practise it all yourself. This tin be a petty challenging at offset, only later a while you volition have a complete agreement of how each change affects your exposure, which will, in plough, improve the way that you utilise the other modes.

When to use Manual (One thousand) way

  • When you demand to maintain consistent exposure when stitching together multiple frames into a panorama; more on this in Chapter vii
  • When you are shooting into the sun and need to maintain a certain exposure setting as y’all recompose (Figure 4.10)


    Figure 4.10

    Figure four.x
    Manual is the perfect mode in lighting situations that can nowadays a challenge to your light meter, such as shooting into the lord’s day. Plus, information technology maintains a consistent exposure across every frame if y’all recompose.

    ISO 200 • i/160 sec. • f/14 • 24–70mm lens at 70mm

  • When shooting silhouetted objects, which requires overriding the camera’due south meter readings (Figure four.11)


    Figure 4.11

    Effigy 4.xi
    Silhouetted subjects can wreak havoc when metering, so just set your camera to Manual and use Alive View to lock in the proper exposure.

    ISO 100 • one/1000 sec. • f/6.3 • 35mm lens

  • When shooting a bright or dark background that could fool your camera’s meter (Figure 4.12)


    Figure 4.12

    Figure 4.12
    Extremely bright or night backgrounds can fool your photographic camera’s meter, but spot metering your subject and applying those readings in Transmission manner ensures consistent proper exposure.

    ISO 100 • 1/2000 sec. • f/iv • 35mm lens

  • When shooting with a lite source with consistent output, such as studio strobes

Setting up and shooting in Manual mode

  1. Turn the Mode dial to align the Grand with the indicator line.
  2. Select your ISO past pressing the right side of the Control wheel (side by side to where it reads ISO), rotating the Command wheel to the desired setting, and pressing the centre of the bike to select (the ISO selection will announced in the electronic viewfinder and the rear LCD panel).
  3. Signal the camera at your subject, and then activate the camera meter by depressing the shutter push halfway.
  4. View the exposure information in the electronic viewfinder or on the rear display.
  5. While the meter is activated, use your thumb to roll the Control wheel left and right to alter your shutter speed value until the exposure marking is lined upwards with the zilch mark. The exposure information is displayed by a calibration with marks that run from –two to +two stops. (You’ll note that –three and +three are grayed out. They represent the range of exposure bounty bachelor for Southward and A modes. In Yard mode, you can forget about –3 and +three.) A “proper” exposure volition line up with the arrow marker in the center. As the indicator moves to the left, it is a sign that you volition be underexposing (there is non enough low-cal hitting the sensor to provide adequate exposure). Move the indicator to the correct and you volition be providing more exposure than the camera meter calls for; this is overexposure.
  6. To ready your exposure using the aperture, depress the shutter release push button until the meter is activated. Then, using your thumb, turn the Control dial correct for a smaller aperture (large f-terminate number) or left for a larger aperture (small f-finish number).

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