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Old July 22nd, 2006, 11:48 AM   #1
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Looking to upgrade condenser - any suggestions?

My condenser is pretty good, but I am getting some softness along the edges and some barrel-distortion. IT is concave and not the cemented one (I can't remember what that is called). That is why I am getting softness, I believe. So in the market for a better one, a strong one. Any suggestions?
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Old July 22nd, 2006, 12:04 PM   #2
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David,

Are you using it against the GG to eliminate vignetting, or close to the camcorder as a close up lens? I have 3 brand new, unopened 50mm PCX lenses no longer needed.
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Old July 22nd, 2006, 12:06 PM   #3
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I am using it to combat vignetting. I have it right against my DV camera lens right now (the condenser). Interestingly enough, it seems to work best against the camera lens...
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Old July 22nd, 2006, 12:10 PM   #4
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David,

To eliminate vignetting, it needs to be close to the GG, not the DV lens. This will give you massive softness. What is the spec of the lens your using?
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Old July 22nd, 2006, 12:21 PM   #5
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Well, with the Letus35A, it already has a rectangular achromat next to the GG - and as I had heard before from other (including myself now) - there is still vignetting. Putting the condenser right beside the DV camera lens really really helps and completely eliminates the vignetting, but of course, now the softness comes in.
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Old July 22nd, 2006, 12:25 PM   #6
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David,

I simply dont understand. The closer the PCX is moved towards the camcorder, the more the vignetting should increase, not the other way around.
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Old July 22nd, 2006, 12:27 PM   #7
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It looks like this :

DV>condenser>Letus Macro>Rectangular achromat>GG> SLR

Without the said condenser, lots of vignetting.
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Old July 22nd, 2006, 12:33 PM   #8
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David,

OK, this makes more sense now. I think you should contact Quyen Le. Best way to eliminate the vignetting is a stronger PCX (to replace the rectangular one) or to increase distance between GG and cam.
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Old July 22nd, 2006, 12:42 PM   #9
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Thanks Wayne.
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