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04/12/2004 06:56:25 AM · #1 |
| I was taught the golden rule to avoid camera shake for hand held pictures is to use the reciprocal of the focal length. So for a 300mm lens use 1/300th or faster. However, magnification on my Digital Rebel/300D means a 300mm lens acts more like a 500mm lens, so would I need to use 1/500th? |
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04/12/2004 06:59:49 AM · #2 |
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04/12/2004 07:41:51 AM · #3 |
I have found that the 300mm = 1/300 rule is largely bollocks anyway, as long as you have steady hands, proper breathing technique and a good "trigger finger".
You are shooting with a digital camera. Why bother with golden rules? Try, and check out if it blurs or not, right away...?
Haje
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04/12/2004 07:41:56 AM · #4 |
Originally posted by grasshopper:
I was taught the golden rule to avoid camera shake for hand held pictures is to use the reciprocal of the focal length. So for a 300mm lens use 1/300th or faster. However, magnification on my Digital Rebel/300D means a 300mm lens acts more like a 500mm lens, so would I need to use 1/500th? |
Try it out and see what speed you can hand hold at, at acceptable sharpness, for you ?
I find I can usually go about one half a stop slower and get okay results, but for large prints, I find I want to be faster than the 1/focal length. No adjustment for digital.
There is also an issue of the difference between can get sharp shots, and can reliably get sharp shots.
Message edited by author 2004-04-12 07:46:24.
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04/12/2004 09:53:56 AM · #5 |
With my Canon G3 I can shoot 1/50 fine. 1/40 is where i start to get into trouble.
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04/12/2004 09:58:04 AM · #6 |
distance to the subject is also a factor - any shake is more noticeable on a subject furter away then one close up - if you think about the shake as a long triangle - widening as you move further from the end of the lense. the same is true of marksman, and target shooting.
this shot - @300mm from 10 feet away.
this shot @300mm about 40 feet away
there is a noticable difference in sharpness between the two - both taken from the same vantage point esentially, handheld at simliar camera settings.
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04/12/2004 10:34:15 AM · #7 |
The rule is still as valid as it ever has been, and yes, you need to take into account the 1.6x "magnification" factor. Although may will (correctly) argue that the lens is still 300mm, thus 1/300 would be valid, in fact this is not the case, since the circle of confusion is also smaller. In reality, that 300mm lens will act exactly like a 480mm lens with regard to shake.
Some of us are much steadier than others, and with practice anyone can greatly improve their steadiness. The weight of camera and lens also has an effect, with heavier equipment being better, to a point.
Advice posted previously to determine your results by shooting is right on.
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04/12/2004 10:42:34 AM · #8 |
Yeah, like kirbic said...as you're using the images from a digital camera at the same size (4x6, 8x10 etc) as a 35mm image, you have to figure that there's magnification going on just as if you were using a lens 1.6x as long.
Message edited by author 2004-04-12 10:43:58. |
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