Wide angle lens sample raw clip at DVinfo.net

Ron Chau · January 11th, 2007, 07:48 PM

Here is a sample clip showing before/after with the Raynox 5050 wide angle lens. It's a raw m2t file so although large, it shows the real thing.

http://www.filefactory.com/file/f74f7c/

I know file factory is a pain, but it's free.

For $90, I am impressed with the Raynox. Barrel distortion is acceptable IMHO. The edges do get soft, but I can live with it. The clip is shot at an angle so you can clearly see the edge softness. If it were shot straight on the softness would be less noticeable.

Anhar Miah · January 11th, 2007, 08:17 PM

Thank you for posting!

Looks very good, clean and distortion free.

On a side note, on my PC when viewing HV10 .m2t files, I can not see any interlacing artifacts, I'm using VLC player and the de-interlace is set to none. And I know when viewing other 1080i material from FX1 I can see interlacing.

Whats going on?

Daymon Hoffman · January 19th, 2007, 08:50 PM

Thanks for this footage. :)

Pieter Jongerius · January 20th, 2007, 03:39 AM

Thanks Ron, looks great.
Anhar, there really is interlacing. You just don't notice it that much because there isn't a lot of motion (and thus not much difference between the fields in every frame).

To show you, I posted a fragment of a still from Ron's clip:
http://www.filecrunch.com/file/~kptp61
Look closely at vertical features such as the bridge or the people walking.

Regards,
Pieter

Laurentiu Todie · January 20th, 2007, 08:44 AM

… or at least softened?
I know how to do it frame-by-frame, in Photoshop

http://www.retouching.com/xinterlacing.gif

sorry! if it is unacceptable to use someone's borrowed frame : )
(I'll take it down if it is)

Lee Wilson · January 20th, 2007, 09:58 AM

Quote:

Originally Posted by Laurentiu Todie

… or at least softened?
I know how to do it frame-by-frame, in Photoshop

http://www.retouching.com/xinterlacing.gif

sorry! if it is unacceptable to use someone's borrowed frame : )
(I'll take it down if it is)

You can de-interlace in just about any editing or compositing software and many media players such as VLC will de-interlace 'on the fly'.

To de-interlace frame-by-frame in photoshop is crazy talk 'round these parts !

Laurentiu Todie · January 20th, 2007, 10:27 AM

… my experience with video (HD or otherwise).
but I'm learning; thanks for the info!

>To de-interlace frame-by-frame in photoshop is crazy talk 'round these parts !
I'm glad, but I think the results could be better.

Can someone post an example of de-interlacing in a video editing application of the same frame?

Pieter Jongerius · January 20th, 2007, 02:09 PM

Hi Laurentiu,

I did a quick google for you to find something on interlacing and deinterlacing:
http://en.wikipedia.org/wiki/Interlace
http://en.wikipedia.org/wiki/Deinterlacing
(there must be better sources but this seems to cover it).

I personally think that interlacing is not all that bad because it gives us the opportunity to capture 200% smoother motion: 60 fields per second, as displayed on regular TVs, instead of just 30 frames. I even think this goes also for display on most LCD tvs, since they often deinterlace internally to 60p.

...but this thread was on wide angle footage I believe, sorry ;) There is tons of (quite advanced) stuff on (de-)interlacing in other parts of the forum.

Added: btw, most of the scaled down WMV or MOV video's that are posted here, are deinterlaced.

Laurentiu Todie · January 20th, 2007, 02:43 PM

Sorry for the hijack.
(I didn't start it, but "it" was touching one of my concerns)

January 11th, 2007, 07:48 PM	#1
Ron Chau Major Player Join Date: Nov 2006 Location: ny, ny Posts: 204	Wide angle lens sample raw clip Here is a sample clip showing before/after with the Raynox 5050 wide angle lens. It's a raw m2t file so although large, it shows the real thing. http://www.filefactory.com/file/f74f7c/ I know file factory is a pain, but it's free. For $90, I am impressed with the Raynox. Barrel distortion is acceptable IMHO. The edges do get soft, but I can live with it. The clip is shot at an angle so you can clearly see the edge softness. If it were shot straight on the softness would be less noticeable.

January 11th, 2007, 08:17 PM	#2
Anhar Miah Major Player Join Date: Dec 2003 Location: United Kindom, England Posts: 290	Thank you for posting! Looks very good, clean and distortion free. On a side note, on my PC when viewing HV10 .m2t files, I can not see any interlacing artifacts, I'm using VLC player and the de-interlace is set to none. And I know when viewing other 1080i material from FX1 I can see interlacing. Whats going on? __________________ The IT Ninja Learn, Teach, Grow..

January 19th, 2007, 08:50 PM	#3
Daymon Hoffman Major Player Join Date: Jun 2003 Location: Australia Posts: 267	Thanks for this footage. :) __________________ Welcome... to the real world!

January 20th, 2007, 08:44 AM	#5
Laurentiu Todie New Boot Join Date: Jan 2007 Location: Rego Park, NY Posts: 20	Can interlacing be avoided … or at least softened? I know how to do it frame-by-frame, in Photoshop http://www.retouching.com/xinterlacing.gif sorry! if it is unacceptable to use someone's borrowed frame : ) (I'll take it down if it is)

January 20th, 2007, 10:27 AM	#7
Laurentiu Todie New Boot Join Date: Jan 2007 Location: Rego Park, NY Posts: 20	5 min. max … my experience with video (HD or otherwise). but I'm learning; thanks for the info! >To de-interlace frame-by-frame in photoshop is crazy talk 'round these parts ! I'm glad, but I think the results could be better. Can someone post an example of de-interlacing in a video editing application of the same frame?

January 20th, 2007, 03:39 AM	#4
Pieter Jongerius Regular Crew Join Date: Jan 2007 Location: Netherlands Posts: 101	Thanks Ron, looks great. Anhar, there really is interlacing. You just don't notice it that much because there isn't a lot of motion (and thus not much difference between the fields in every frame). To show you, I posted a fragment of a still from Ron's clip: http://www.filecrunch.com/file/~kptp61 Look closely at vertical features such as the bridge or the people walking. Regards, Pieter

January 20th, 2007, 02:09 PM	#8
Pieter Jongerius Regular Crew Join Date: Jan 2007 Location: Netherlands Posts: 101	Hi Laurentiu, I did a quick google for you to find something on interlacing and deinterlacing: http://en.wikipedia.org/wiki/Interlace http://en.wikipedia.org/wiki/Deinterlacing (there must be better sources but this seems to cover it). I personally think that interlacing is not all that bad because it gives us the opportunity to capture 200% smoother motion: 60 fields per second, as displayed on regular TVs, instead of just 30 frames. I even think this goes also for display on most LCD tvs, since they often deinterlace internally to 60p. ...but this thread was on wide angle footage I believe, sorry ;) There is tons of (quite advanced) stuff on (de-)interlacing in other parts of the forum. Added: btw, most of the scaled down WMV or MOV video's that are posted here, are deinterlaced.

January 20th, 2007, 02:43 PM	#9
Laurentiu Todie New Boot Join Date: Jan 2007 Location: Rego Park, NY Posts: 20	Thank you, Pieter! Sorry for the hijack. (I didn't start it, but "it" was touching one of my concerns)