Old 05-15-2010, 09:08 PM #1
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,448
Rep Power: 7374626
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,448
Rep Power: 7374626
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Strange Camera Artifacts

I notice these in my ancient camera when taking a video of an argon spyrograph tunnel a few years back. I haven't seen them anywhere else until now in Jupiter8's avatar:



Does anyone else see things like these regularly or know what causes them? The beam is shifted in the exposure, but I don't see how the exposure could shift faster than a beam of light. It seems to stop, and reappear elsewhere in the frame. Here are some shots from my old video











__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote


















Old 05-16-2010, 12:30 PM #2
jupiter8's Avatar
Class 1M Laser
 
Join Date: Apr 2010
Location: Adelaide, South Australia
Posts: 176
Rep Power: 20
jupiter8 has much to be proud ofjupiter8 has much to be proud ofjupiter8 has much to be proud ofjupiter8 has much to be proud ofjupiter8 has much to be proud ofjupiter8 has much to be proud ofjupiter8 has much to be proud ofjupiter8 has much to be proud ofjupiter8 has much to be proud of
jupiter8 jupiter8 is offline
Class 1M Laser
jupiter8's Avatar
 
Join Date: Apr 2010
Location: Adelaide, South Australia
Posts: 176
Rep Power: 20
jupiter8 has much to be proud ofjupiter8 has much to be proud ofjupiter8 has much to be proud ofjupiter8 has much to be proud ofjupiter8 has much to be proud ofjupiter8 has much to be proud ofjupiter8 has much to be proud ofjupiter8 has much to be proud ofjupiter8 has much to be proud of
Default Re: Strage Camera Artifacts

Yep I know what causes it cyparagon. The frame rate for the camera (frames per second) is almost in sync with the revolutions of you mirror, which the laser beam is bouncing off, or scanning rate if it's a scanner. So what you see as dark areas, missing or blank areas, is where the laser is tracking somewhere else at the time the camera shutter is open. It's the same as the scrolling horizontal lines you see sometimes when you film a TV screen with a camcorder, and the scan rate of the TV almost matches the frame rate of your camcorder. I liked how it looked, despite being an artifact, so I used the picture as an avatar. Cheating I know!
__________________
.
.

"four to one against and falling...three to one...two...one...probability factor of one to one...we have normality, I repeat we have normality."

---------------------------------------------------
jupiter8 is offline   Reply With Quote
Old 05-16-2010, 03:25 PM #3
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,448
Rep Power: 7374626
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,448
Rep Power: 7374626
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: Strage Camera Artifacts

But it's the same for every speed of the mirrors.

Edit: I could understand if it was split radially, but it's cut off mid-beam. I don't think exposure can be faster than the speed of light.
__________________
A problem well stated is a problem half solved.

Last edited by Cyparagon; 05-16-2010 at 09:41 PM.
Cyparagon is online now   Reply With Quote
Old 05-17-2010, 09:59 AM #4
Gryphon's Avatar
Class 3R Laser
 
Join Date: May 2009
Location: Panama City, Florida
Posts: 1,838
Rep Power: 183
Gryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond repute
Gryphon Gryphon is offline
Class 3R Laser
Gryphon's Avatar
 
Join Date: May 2009
Location: Panama City, Florida
Posts: 1,838
Rep Power: 183
Gryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond repute
Default Re: Strange Camera Artifacts

Mishap or not those look sweet! I really like the second to last one
__________________
I see................wait, what now?

(3x) 405nm
(6x) 445nm
(4x) 532nm
(1x) 543nm
(1x) 632.8nm
(1x) 635nm
(3x) 660nm
SSY-1 Laser
Gryphon is offline   Reply With Quote
Old 05-17-2010, 05:37 PM #5
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,448
Rep Power: 7374626
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,448
Rep Power: 7374626
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: Strange Camera Artifacts

Oh they're not a hassle, I've got plenty of other cameras I can borrow. I was just curious as to what caused them.
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 05-17-2010, 06:17 PM #6
brando132's Avatar
is beyond cool
 
Join Date: Jan 2010
Location: Saskatchewan, Canada
Posts: 578
Rep Power: 15
brando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of light
brando132 brando132 is offline
is beyond cool
brando132's Avatar
 
Join Date: Jan 2010
Location: Saskatchewan, Canada
Posts: 578
Rep Power: 15
brando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of light
Default Re: Strange Camera Artifacts

I have that in my spiro videos, it bugs me. check my sig for a link, it's in the picture link at the very bottom.
__________________

~3.5W 465nm Jetlaser PL-E Pro
527mW 532nm Rayfoss FMK
305mW 532nm labby.
~35mW 532nm DX Gunsight

13.6mW 632.8nm 14" HeNe bare tube.
~100mW 655nm DX NewWish Pen
--------------------------------
488 Rep Points.
brando132 is offline   Reply With Quote
Old 05-17-2010, 07:06 PM #7
brando132's Avatar
is beyond cool
 
Join Date: Jan 2010
Location: Saskatchewan, Canada
Posts: 578
Rep Power: 15
brando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of light
brando132 brando132 is offline
is beyond cool
brando132's Avatar
 
Join Date: Jan 2010
Location: Saskatchewan, Canada
Posts: 578
Rep Power: 15
brando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of light
Default Re: Strange Camera Artifacts

It's not a blu-ray, it's a 473. Its only 5mw so it's not near as bright as the others and it's pulsed so that probably helps to negate the effect, but you can still see it a bit.
__________________

~3.5W 465nm Jetlaser PL-E Pro
527mW 532nm Rayfoss FMK
305mW 532nm labby.
~35mW 532nm DX Gunsight

13.6mW 632.8nm 14" HeNe bare tube.
~100mW 655nm DX NewWish Pen
--------------------------------
488 Rep Points.
brando132 is offline   Reply With Quote
Old 05-17-2010, 09:49 PM #8
brando132's Avatar
is beyond cool
 
Join Date: Jan 2010
Location: Saskatchewan, Canada
Posts: 578
Rep Power: 15
brando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of light
brando132 brando132 is offline
is beyond cool
brando132's Avatar
 
Join Date: Jan 2010
Location: Saskatchewan, Canada
Posts: 578
Rep Power: 15
brando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of light
Default Re: Strange Camera Artifacts

Yes, I love it too but my stupid fog machine broke a few months ago and haven't been able to do anything like that for a while.
__________________

~3.5W 465nm Jetlaser PL-E Pro
527mW 532nm Rayfoss FMK
305mW 532nm labby.
~35mW 532nm DX Gunsight

13.6mW 632.8nm 14" HeNe bare tube.
~100mW 655nm DX NewWish Pen
--------------------------------
488 Rep Points.
brando132 is offline   Reply With Quote
Old 05-17-2010, 10:44 PM #9
brando132's Avatar
is beyond cool
 
Join Date: Jan 2010
Location: Saskatchewan, Canada
Posts: 578
Rep Power: 15
brando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of light
brando132 brando132 is offline
is beyond cool
brando132's Avatar
 
Join Date: Jan 2010
Location: Saskatchewan, Canada
Posts: 578
Rep Power: 15
brando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of lightbrando132 is a glorious beacon of light
Default Re: Strange Camera Artifacts

Mine was left on overnight(not by me), just heating till it got to fogging temp. and cooling then reheating and cooling...etc, for around 18 hours. now it doesn't heat up any more. The light comes on, but it's done. NOTHING. argh!
__________________

~3.5W 465nm Jetlaser PL-E Pro
527mW 532nm Rayfoss FMK
305mW 532nm labby.
~35mW 532nm DX Gunsight

13.6mW 632.8nm 14" HeNe bare tube.
~100mW 655nm DX NewWish Pen
--------------------------------
488 Rep Points.
brando132 is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



























Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 01:43 PM.


Powered by: vBulletin
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC