DV Info Net

DV Info Net (https://www.dvinfo.net/forum/)
-   Canon XH Series HDV Camcorders (https://www.dvinfo.net/forum/canon-xh-series-hdv-camcorders/)
-   -   Spots during capture (https://www.dvinfo.net/forum/canon-xh-series-hdv-camcorders/498256-spots-during-capture.html)

Greg Clark July 9th, 2011 04:26 AM

Spots during capture
 
1 Attachment(s)
The attached frame is during a controlled shoot inside with two soft boxes. I hope you notice the spots against the black background in the attachment. I had cleaned my UV filter before using. Is it dirt on the lens, inside the lens or some other abnormality?

Roger Van Duyn July 9th, 2011 08:17 AM

Re: Spots during capture
 
It looks to me like dried water droplets on the lens, or on the uv filter you had cleaned. Sometimes I've had trouble cleaning those kind of droplets off, not only my cameras, but also my eyeglasses, scuba masks, etc. By trouble I mean thinking that I've gotten it all off, because the dried droplets can be hard for me to see. I doubt that it's inside the lens.

You weren't filming near the ocean were you? Sweat droplets are similar since they are both salt water.

Don Palomaki July 17th, 2011 07:53 AM

Re: Spots during capture
 
Looks like something on the lens, Likely an outer surface, and it maybe very subtle.

The issue is that the depth of field is so large, and the outer most optical path surface so far from the the center of the lens, anything on the surface can leave a blurred artifact in the image, especially if brignt direct or reflected light hits the spot. The black background is perfect for bringing it out.

Greg Clark September 2nd, 2011 05:27 PM

Re: Spots during capture
 
The problem is my Hoya UV Filter. Many people complain about difficulty in cleaning Hoya. If someone knows a way to clean the Hoya filter I would appreciate a solution. The only other alternative is no filter.

Chris Soucy September 2nd, 2011 09:22 PM

Re: Spots during capture
 
I've got Hoya's on both my XL1s and XH A1.

I just use a solvent spray from my optician, designed for cleaning spectacle lenses and the cloth that comes with every pair of glasses I've ever owned (which is quite a few).

Works for me, no spots, no smears, no scratched coating, nada.


CS

Bill Grant September 4th, 2011 04:23 PM

Re: Spots during capture
 
The reason I stopped using UV filters was this. Like a reflection on the lens. That's what it looks like to me.
Bill

Greg Clark September 7th, 2011 10:51 AM

Re: Spots during capture
 
I purchased a liquid that takes off most of the spots on my UV filter but I am going to go with Bill's advice. No filter.

Don Palomaki September 8th, 2011 04:09 AM

Re: Spots during capture
 
Install a filter only when you need it for sure for lens protection, such as wild parties with spraying carbonated liquids or close shots of babies enjoying their meals


All times are GMT -6. The time now is 11:48 AM.

DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network