eowen
Premium
join:2004-05-12
Temecula, CA
| two simple questions
1.) when someone mentions stopping down, what does that exactly mean?
2.) i have seen some really good shots of water falls/lakes/rivers flowing here in the DI section and elsewhere. How does one archive that effect of fluff looking water? someone roughly explained to me but i didnt quite understand it.. something about opening a small aperture.
thanks,
eN |
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ccallana
Huh?
Premium,VIP
join:2000-08-03
Folsom, CA
 ·AT&T Yahoo
| said by eowen  :1.) when someone mentions stopping down, what does that exactly mean? Using a smaller aperature (larger f-stop) stopping down from f4 to f16 - or in the case of some older lenses, when they talk about stop-down metering, it means the camera can only properly meter when the lens is closed down to the aperature it is going to shoot with. Modern cameras/lenses do open aperature metering - using the largest aperature available to meter.
2.) i have seen some really good shots of water falls/lakes/rivers flowing here in the DI section and elsewhere. How does one archive that effect of fluff looking water? someone roughly explained to me but i didnt quite understand it.. something about opening a small aperture.
The way I've seen the water get effects like that is with longer exposures - water is moving, so you get the blurry effect.
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altermatt
Premium
join:2004-01-22
White Plains, NY
·Verizon Online DSL
| reply to eowen
said by eowen :How does one archive that effect of fluff looking water? Not sure about using a small aperture to get that effect (someone else may be able to speak to that), but what I do is use a slow shutter speed (and tripod!) so that the exposure is longer and you capture the motion. OTOH, with a fast shutter speed, you'll get a clear picture of the water with the motion almost stopped. Both interesting effects.
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Pretorious
Theres more behind the pic than the wall
Premium,MVM
join:2003-01-08
clubs:  
·Verizon Online DSL
| reply to eowen
The best effect I've found to capturing the water and making it appear with that silky look is to shoot at around f/14 or f/16 for best sharpness, lower your ISO to the lowest possible setting, by doing these two steps you are eliminating as much noise as possible and restricting light to your sensor to some degree, which in turn will allow your camera to use a longer shutter delay to achieve the correct exposure capturing the movement of the water. Metering on the proper subject is also important.
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Gemologist
Premium
join:2001-11-15
USA
clubs:
·Embarq
| reply to eowen
To achieve the silky water you will most likely need a Neutral Density Filter, or shoot early in morning or later in the evening. You need a longer shutter speed to achieve the effect.
Stopping down means to set your aperture to a higher number, lower number is opening it up. Stopping down gets your lens into its more optimal area for sharpness, contrast, and quality. This sweet spot is typically somewhere between f/5.6-f/11 on most lenses.
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eowen
Premium
join:2004-05-12
Temecula, CA | reply to eowen
thanks for the tips everyone. Was out of the house for the last 2 days but im back now and i can reply.  ill will definately practice those ideas. again thank you all.
e |
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Hayward
K A R - 1 2 0 C
Premium
join:2000-07-13
Key West, FL
| reply to ccallana
said by ccallana :The way I've seen the water get effects like that is with longer exposures - water is moving, so you get the blurry effect. Or conversely stopping UP to do that. Not literally but same effect as F/stop and shutter are inter related... so you want the blurred water effect high F/stop if bright light but low shutter speed.
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»haywardm.com (Hayward's Key West)
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