When to use shutter speed or not?

I use Shutter on when the scene is very good lighted. (Not the good english translation but you get the idea ) :)
Whe using a shutter of 1/1000 or so it gives your image much more detail.

Ofcourse when the scene is dark and there is not enough light turn shutter to off.
 
so when for instance you are shooting 720/50p and use shutter 1/1000 the exposure time for each frame is reduced from X to 1/1000 sec. ?? what is X in this example ?
 
Okey, thanks:)

But why not use the ND instead of shutter speed when it's to bright?

I still don't understand the shutter speed part?:huh:

Regards
Nacka
 
720/50p tells you the resolution and framerate: 1280x720 pixels at 50 progressive frames per second. The shutter speed tells you for how long the imager was exposed to the light to develop one frame. So at 50p with the shutter off, the imager is exposed for 1/50 seconds. When the shutter speed is 1/1000, the imagers are only "grabbing" the image for 1/1000 of a second at your selected frame rate. So 720/50p at 1/1000 shutter speed= 1280x720 pixels, 50 progressive frames per second, where each frame was exposed to the CMOS sensors for only 1/1000 of a second.

Hope that helps.
 
Nacka said:
Okey, thanks:)

But why not use the ND instead of shutter speed when it's to bright?

I still don't understand the shutter speed part?:huh:

Regards
Nacka
Click to expand...

Stylistically, a faster shutter speed has a very different feel than a slow one. Faster shutter speeds have a harsher, choppier motion that invokes an action scene or more fast-paced energy, while slower speeds smooth out the motion. So the decision of whether to use ND or the electronic shutter generally comes down to stylistic choice for that shot since, as you said, they both reduce the exposure of the image.
 
Thanks, so when i turn the shutter off each frame is exposed 1/50 of a second right? So question of the OP stands "when do you use shutter speeds"


JCal11379 said:
720/50p tells you the resolution and framerate: 1280x720 pixels at 50 progressive frames per second. The shutter speed tells you for how long the imager was exposed to the light to develop one frame. So at 50p with the shutter off, the imager is exposed for 1/50 seconds. When the shutter speed is 1/1000, the imagers are only "grabbing" the image for 1/1000 of a second at your selected frame rate. So 720/50p at 1/1000 shutter speed= 1280x720 pixels, 50 progressive frames per second, where each frame was exposed to the CMOS sensors for only 1/1000 of a second.

Hope that helps.
Click to expand...
 
I've always used a high speed shutter (1/1000+) for high speed shots that you might want to slow motion later and see each frame clearly, or for a very stylistic look. It's somewhat like the newer flat panel LCD TVs that have 120Hz or 240Hz refresh rates. It's becoming a popular feature so that you can "see every frame" with less blur than a standard 60Hz refresh rate.

As for the "style" usage, I'll refer you to a video I shot several months ago (on a JVC HM700) where I used a high speed shutter on a shot of a child playing in a waterfall. The effect I wanted (and got) was where you could more or less see the water droplets in the waterfall instead of just a sheet of water. Here's a link to the video - the shot in question occurs about 30 seconds in: http://www.mountainmedia.tv/Our Latest Work/Our Latest Work.html

This effect can also cool to use on big snowflakes - makes them stand out more - and helicopter blades/aircraft propellers, etc. Any fast motion you want to be able to see more clearly. The opposite effect can be attained by using a slow shutter speed. Like this:

waterfalls-3-1.jpg


Finally, a variable shutter - which the HPX300 also has - is useful if you're shooting a CRT screen and want to remove the rolling bars from the picture.

Hope that helps a bit. It's more confusing to discuss than it is to use. Experiment a bit and you'll find good uses for shutter speeds.
 
I thought you could achieved this with synchro scan ?

mountainmedia said:
Finally, a variable shutter - which the HPX300 also has - is useful if you're shooting a CRT screen and want to remove the rolling bars from the picture.

Hope that helps a bit. It's more confusing to discuss than it is to use. Experiment a bit and you'll find good uses for shutter speeds.
Click to expand...
 
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