Beam shots of my 405nm hand held + 1 video

[jhosler]

This was taken in a fully lit room with my digital camera. Please don't mind the mess, I was in the process of cleaning my room. no smoke or fog. I had the camera set to full auto and no flash.

These pics were taken in my garage

 

[weeba2kv]

Re: Beam shot of my 405nm hand held

Hmmm looks like a long exposure to me

 

[jhosler]

Re: Beam shot of my 405nm hand held

I do have a UV filter on my camera.

 

[DJNY]

Re: Beam shot of my 405nm hand held

Nice 405nm shot! My cam isn´t able to recongnize my 700mW, even not with fog.

I often do laser realted stuff when I´ve to learn for univercity

 

[jhosler]

Re: Beam shot of my 405nm hand held

Nice 405nm shot! My cam isn´t able to recongnize my 700mW, even not with fog.

I often do laser realted stuff when I´ve to learn for univercity

The camera I have, is a Fuji Film Fine Pix S6000fd. It kinda looks like a DSLR.

 

[Trevor]

Re: Beam shot of my 405nm hand held

Hmmm looks like a long exposure to me

The no-flash setting set a high ISO (notice the graininess) and a moderately-long exposure. All sensors respond differently to different wavelengths - the sensor in this camera happens to render 405nm more visible than it actually is. That coupled with the settings yielded these images.

I do have a UV filter on my camera.

Those block UV, not visible light. Your laser is visible light. They are also useless for digital cameras - UV filters are a vestige from the days of film. If you do see any benefits from a UV filter, it's not going to be indoors; it will be when you're shooting over long distances. These photos weren't affected by it at all.

My advice is to take it off; you're gaining nothing and are increasing potential for flares.

-Trevor

 

[anselm]

Re: Beam shot of my 405nm hand held

UV filters are a vestige from the days of film. If .....
My advice is to take it off; you're gaining nothing and are increasing potential for flares.

IIRC, they were/are quite popular mainly to protect the expensive lenses
from scratches/dirt/fingerprints.
In most cases, they wouldn't change the picture in any way.

 

[Trevor]

Re: Beam shot of my 405nm hand held

IIRC, they were/are quite popular mainly to protect the expensive lenses
from scratches/dirt/fingerprints.
In most cases, they wouldn't change the picture in any way.

Sure, sure. But it's a shame to put a piece of low quality glass in front of a really nice lens though.

The cutting edge DSLR's (that will soon be the trailing edge) will pick up any softness introduced by lower quality filters, robbing you of some ability to crop your images. If you get a high quality filter and get dust or a fingerprint on it, you still have dust or a fingerprint in the optical train. If it dies protecting your lens, you're going to be out your $100+ filter - but your lens will be safe. You decide. (For record, I use them.)

My point was that the UV filter did absolutely nothing in this scenario.

-Trevor

 

[jhosler]

Re: Beam shot of my 405nm hand held

Thanks for the replies. I have added a video I took with my Droid X today at work of the laser burning through 2 floppy disks.