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#1 |
Inner Circle
Join Date: Aug 2006
Location: Poland
Posts: 4,086
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glare: CMOS or lens?
When shooting against the (low and strong) sunshine, I'm getting glaring artefacts like in the attached snapshots. What's to blame: the CMOS chips, or the lens? If the latter, is it normal with the V1, or is my unit' lens at fault (the lens were clean)? TIA!
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Sony PXW-FS7 | DaVinci Resolve Studio; Magix Vegas Pro; i7-5960X CPU; 64 GB RAM; 2x GTX 1080 8GB GPU; Decklink 4K Extreme 12G; 4x 3TB WD Black in RAID 0; 1TB M.2 NVMe cache drive Last edited by Piotr Wozniacki; March 13th, 2007 at 01:59 PM. |
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#2 |
Inner Circle
Join Date: Nov 2005
Location: Elk Grove CA
Posts: 6,838
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Looks like lens flare. That shape on picture 2 is the aperture iris. It is not uncommon to have this occur, in my opinion, when you have sunlight direct on your lens. I am attaching one that comes from my Sony FX1 as an example..
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Chris J. Barcellos |
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#3 |
Video Bear
Join Date: Jan 2002
Location: Stafford, VA, USA
Posts: 45
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The second one is a pretty obvious lens flare. Almost all lenses will produce lens flares when pointed at bright light sources. It's so common that 3D animation programs like LightWave include the option to create lens flares in CGI scenes...the "defect" adds an element of realism.
The spots in the first one could also be lens flares, or could be specks of dust on the front element...not sure. Anyway, these things look like pretty normal artifacts of optics...I would not be too quick to blame the particular camera.
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Regards, Doug Graham |
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#4 |
Inner Circle
Join Date: Aug 2006
Location: Poland
Posts: 4,086
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Thanks for the feedback. Again, even though I agree this is normal when shooting against a bright light source, the effect was never that pronounced with the HC1 I used to have!
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Sony PXW-FS7 | DaVinci Resolve Studio; Magix Vegas Pro; i7-5960X CPU; 64 GB RAM; 2x GTX 1080 8GB GPU; Decklink 4K Extreme 12G; 4x 3TB WD Black in RAID 0; 1TB M.2 NVMe cache drive |
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#5 |
Join Date: Jan 2004
Location: Stockton, UT
Posts: 5,648
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that's because the HC1 has a smaller lens, has a bigger overall/relative hood, and may be masking the flare.
Wait'll you put a wide lens on the V1 (or any other camcorder).
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Douglas Spotted Eagle/Spot Author, producer, composer Certified Sony Vegas Trainer http://www.vasst.com |
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#6 |
New Boot
Join Date: Jan 2007
Location: New Orleans, LA
Posts: 12
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Piotr - were you using any lens filters such as a UV filter?
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#7 |
Inner Circle
Join Date: Aug 2006
Location: Poland
Posts: 4,086
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No, Mike - nothing on the lens; why?
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Sony PXW-FS7 | DaVinci Resolve Studio; Magix Vegas Pro; i7-5960X CPU; 64 GB RAM; 2x GTX 1080 8GB GPU; Decklink 4K Extreme 12G; 4x 3TB WD Black in RAID 0; 1TB M.2 NVMe cache drive |
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#8 |
Major Player
Join Date: May 2005
Location: Europe
Posts: 844
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...because using filters adds more reflective surfaces and can increase flare probs and also can reduce contrast.
IMO those shots exhibit entirely normal lens flare when you're shooting into the light. I don't think there's anything to be concerned about. |
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#9 |
Inner Circle
Join Date: Feb 2007
Location: Apple Valley CA
Posts: 4,874
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I've taken to noticing lens flare in movies - don't know if it's added in or on the film to start with, but more than a few times I've seen it pretty much just like in your stills! I'd say it's a normal thing... perhaps even usable as and effect if you could learn to tame it!
DB>) |
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#10 |
Major Player
Join Date: Nov 2005
Location: Houston, Texas
Posts: 753
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Piotr
Try using a sun shade this will reduce the flare. |
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#11 |
Major Player
Join Date: Jun 2006
Location: Toronto
Posts: 539
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Hey Brian,
Do you happen to have those pictures in a higher quality? |
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#12 |
Major Player
Join Date: Nov 2005
Location: Houston, Texas
Posts: 753
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YES I wil repost the pictures.
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#13 |
Major Player
Join Date: Jun 2006
Location: Toronto
Posts: 539
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Hey you've got some really useful/practical accessories.
Can you list some of those things we're seeing? I noticed that you chose not to use the mic mount on the V1U but you're still using the supplied mic. Was that just done to reduce vibration, or was there another reason? I'm using a Rode NT3 mounted with an SM5 shock mount but it really does add a lot of weight to the overall package. How heavy is the shock mount you're using? That sun shade is a great idea. I noticed in a lot of Sony's promo pics for the V1U that they had a matte box on it, but it doesn't seem to be an official Sony accessory. I wonder which matte box or sun shade would fit the V1U nicely. |
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#14 |
Major Player
Join Date: Nov 2005
Location: Houston, Texas
Posts: 753
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I am using a J-Rode that I modified to hold the original Sony mic and the wireless mic. The sunshade is mounted to the original Sony lens hood using a Hama flash mount. The Sun shade (purchased on Ebay) mounting shaft had to be machined to have of the original length to fit in the Hama Flash Mount. The camera light is a 50w-100w Bescor KLK-50H Light with battery pack. fully dressed I think the came is still lighter than my Z1.
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#15 |
Regular Crew
Join Date: Jun 2006
Location: NJ, USA
Posts: 169
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The rig looks good Brian....I am glad The J-Rod is working out for you so well. You can check them out at www.thej-rod.com
Regards. Last edited by Jeff Rhode; March 17th, 2007 at 02:47 AM. |
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