shutter angle and shutter speed and synchro scan

[terrykim]

if some one can clear up these features it would be appreciated
i have been shooting time lapse and sporting events
i wanted to shoot some high paced action sports at a 45 degree shutter but I have failed to find the appropriate settings could some one suggest one for me?

also, i have been trying to shoot a night scene and with a streaky healight effect but i have yet to see this effect. barry green informed me of a 2f hack in film mode @ 350 degree synchroscan shutter. i have yet to see the blurry effect. can someone offer their experience as to what i'm doing wrong?

lastly, what if any is the difference between acessing the shutter angle vs adjusting the shutter speed (synchrocro shutter? is it the same thing?)

i've already bothered barry twice and still haven't got it so i'm wondering if anyone else could assist?

thank you

[VenezuelanD]

Ok lets see:

For the sports stuff, you'd have to be in film cam mode, then use the synchro shutter to lower the shutter angle to 45d. What format are you shooting sporting events? SD? HD? For sports 720p60 is probably the best setting, but it does go through p2 cards fairly quickly.

Its simple, use the 2fps hack (you need a computer with a card reader and an SD card) and set the shutter to 350d. This will make your effective exposure time around half a second long, which should blur traffic pretty effectively.

Shutter speed when its in video mode is always decided in seconds: 1/24th of a second, 1/1000th of a second independent of your frame rate. This is the way typical video cameras work, where you may be able to open up to say 1/15th of a second, 1/30, 1/24, 1/60, ect. This functions independently of frame rate (Though i believe you can't go lower than 1/15th of a sec on 30fps, or 1/12 on 24fps, but don't quote me on that). No matter what your frame rate a 1/60 shutter speed will always give you a 1/60th exposure time.

Shutter angles (which is only accessible by switching the camera mode to film cam and using synchro to increase or decrease the shutter angle by .5d) work the way they do in actual film. This means the exposure time for your frame is a compination of shutter angle and frames per second.

A 180d shutter angle at 24fps gives you a 1/48th of a second exposure time. You can figure out expsure time by multiplying your frame rate by 360 then dividing by your shutter angle, and this the reciprocal of time for your expsure (IE just put whatever you got as a result over 1)

So (24x360)/180=48 or 1/48th second exposure time.

So while a 1/60 shutter speed at 30fps or 24fps will result in each frame being exposed the same amount (1/60th of a second) with a shutter angle of 220 at 24fps each frame would be exposed 1/40th of a second and at 30fps each frame would be exposed 1/50th of a second.

While shooting in time lapse mode your shutter is always 1/48th of a second so regardless of shooting one frame every second or one frame every 10 seconds, you are very unlikely to see any blurring.

[menu]

Thank you for the answers, i was pondering the same questions : )
Regards, Menu

[terrykim]

yes!
daniel, sorry for the delay on the thanks
i will try the suggestions you mentioned

many thanks
terry