 Anne House |
Slow shutter, bright light OK- It's a sunny day, and I want to take pictures of cars going over a bridge- with the effect of the cars blurring to show motion. How do I do that? Slow shutter speed to...? How do I compensate for the slower shutter speed overexposing the picture? Or am I going about this all wrong? Hope this makes sense...Thanks!!
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Jon Close |
Yes, using longer shutter speed will give you motion blur. The exact speed depends on the velocity of the cars, your distance from them, and the angle of the movement from you. Slowing the shutter speed is offset with a smaller aperture (higher f-number). For example, the following combinations give the same exposure: 1/500 f/4, 1/250 f/5.6, 1/125 f/8, 1/60 f/11, etc. If your film (or digital ISO setting) is too fast (eg. ISO 400) you may not get the slow shutter speed you want. In that case you'll have to use slower film (or lower the ISO setting if digital) and/or cut the light to the film with neutral density filters or polarizing filter.
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Anne House |
Thanks, Jon. So, I tried this yesterday- I had my f number at 8 - my cameras max- and I could only get my shutter down to around 1/125 or so...then it would overexpose. Is there anything else I could have tried? Or am I limited by my equipment...or lack, thereof. Thanks, again!
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Jon Close |
"In that case you'll have to use slower film (or lower the ISO setting if digital) and/or cut the light to the film [digital sensor] with neutral density filters or polarizing filter."
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