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BabyPalm2003
9th August 2006, 15:20
ขอเกาะกระแส Wireless Flash Photography ที่กำลังโด่งดังของ ThaiD ไปด้วยคนครับ

ตามไปดูกันได้เลยครับ ที่นี่ http://www.imaging-resource.com/ACCS/NIKONCLS/NIKONCLSA.HTM

RUTch
9th August 2006, 15:43
ขอเกาะกระแส Wireless Flash Photography ที่กำลังโด่งดังของ ThaiD ไปด้วยคนครับ

ตามไปดูกันได้เลยครับ ที่นี่ http://www.imaging-resource.com/ACCS/NIKONCLS/NIKONCLSA.HTM
http://www.thaidphoto.com/forums/attachment.php?attachmentid=137217&stc=1Here's what we think is happening in the shot above:

D70 fires a "wake up" series of command pulses, to get the attention of any remotes that might be out there, lying dormant. (Note that what looks like a single bright flash here is actually a very rapid series of communication pulses, carrying digital data from the D70 to the remotes.)
D70 fires a command pulse stream to instruct the remote(s) to get ready to fire a metering pulse.
D70 fires a single, (low power) trigger pulse. The SB-800 fires in synchrony with it. This is the metering pulse.

(Then there's a pause, while the D-70 digests the results of the metering pulse, and computes the correct exposure based on its TTL measurement.)
The D70 fires a series of command pulses, instructing the remotes to get ready for the main exposure flash, and telling them what power level to fire at.
The D70 fires a single trigger pulse. The SB-800 fires in synchrony with it. This is the main exposure flash.

ใครรู้บ้างว่าไอ้รูปอย่างนี้มันถ่ายยังไงอะ

BabyPalm2003
9th August 2006, 16:02
ใครรู้บ้างว่าไอ้รูปอย่างนี้มันถ่ายยังไงอะ

เพิ่งรู้ว่าป๋าน่ะใจร้อนเหมือนกัน

เค้าบอกไว้ตรงนี้ครับ

Caught in the Act: Advanced Wireless Lighting in Action
This really has nothing to do with the D70 and SB-800's photographic capabilities, but it's a cool picture, so I thought I'd share it: We were debating how many flash pulses we thought we were seeing coming from the D70 and SB-800 in wireless TTL mode while we were measuring the shutter lag in that mode. To settle the debate, one of us held the SB-800's head directly above the D70's built-in strobe. The other took another camera, pointed it at the combination, and panned it rapidly with a long exposure, just as Luke pressed the shutter. It took a few tries to catch it just right, but the shot above shows that there are actually a total of five flash pulses emitted by the D70 and SB-800 in the process of making one wireless TTL exposure. (All this happens in about 0.6 seconds.)

RUTch
10th August 2006, 10:16
โอววววววววววว วิธีการร้ายกาจ จริงๆ

DOFJerk
10th August 2006, 11:09
เฉลยหมดเปลือก..

http://www.thaidphoto.com/forums/attachment.php?attachmentid=137448&stc=1
จาก http://www.thaidphoto.com/forums/showthread.php?t=33302