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2020 Schedule - September Topic

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18 Dec 2019 16:31 #6632 by Bear
2020 Schedule - September Topic was created by Bear
Projected − “Impact”
An image showing any subject that results in an impact of some kind. Staged or random images, potential collision of objects are allowed if seconds before impact, and not just the actual collision. No dangerous activities please just to get the shot, other words no crazy stuff. Explosions or implosions. Collision and Impact are interchangeable in this brief.


This topic implies high speed photography or action sport or other type of action related topic.
NOTE: Suggest that your lens requirement is that the focal length should be long enough so that you have sufficient distance between your camera and the subject, to keep your gear safe from colours and water splashes.
There are two basic ways to do this: One, shorten the shutter speed or Two, use flash in a way that the time the subject is illuminated is extremely minimal. The common denominator between these two methods is that the exposure made on the camera sensor is extremely brief. How brief? Like many things in photography, it depends.
In locations where you are using just the ambient light, say outdoors on a bright day, it's likely you have already employed the first method. You probably know that to freeze a moving object you should use a higher shutter speed. But how fast? If your intention is to totally freeze the moving subject, you need a shutter speed sufficiently fast enough that there is no discernible movement during the time of the exposure. The necessary shutter speed to freeze the action will depend on how fast your subject is moving. The direction the subject is moving relative to the camera, (toward or away, diagonally, or perpendicular to the camera) will matter as well. How far the subject is from the camera or how much you are zoomed in will matter too.
The use of flash or flashes can freeze the action or record multiple images of the impact process as it is happening capturing before, during and after the impact.
If using flash or flashes, use on the lowest power setting? Because that will give you the shortest flash duration. If you fire a flash on full power the flash duration is around 1/1,000th of a second. But at 1/128th power, it comes down to almost 1/35,000th of a second, which will freeze the subject completely.
A trick to consider, use burst mode on your camera. Set your camera to high-speed burst mode. You also need to change the camera mode to manual and the shutter speed to 1/125. Plus, you need to attach your master flash to the camera so that it’ll fire with the camera simultaneously.
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28 Aug 2020 14:40 - 28 Aug 2020 14:40 #7393 by JillH
Replied by JillH on topic 2020 Schedule - September Topic
thanks Dennis - tricky subject!
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26 Sep 2020 08:04 #7450 by Jodie D
Replied by Jodie D on topic 2020 Schedule - September Topic
Projected critique - Impact. Judge Greg Perry

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26 Sep 2020 13:12 #7455 by JillH
Replied by JillH on topic 2020 Schedule - September Topic
thanks Jodie, Always interesting to see the judges and photographers' interpretation of the subject and comments,
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