How much resolution loss with adaptor? 1080 ?

P

PIMP

Well-known member
So i was wondering how much resolution do you loose using a 35mm adaptor. In case you ask what i am using, its a hvx200a and a g35. Will shooting 1080 help in the slight loss of resolution loss?
 
PIMP, i think you should think about, "how soft does it get." when you use an adapter. Any kind of diffusing element(gg) in front of a take up lens will give you x-amount of diffusion depending on x-adapter. In my experience, an adapter's gg lessens the razor sharpness of HD , this however, contributes somewhat to apparent "filminess" look that some of us want on certain projects.
 
No, PIMP is using the right term.

Slapping an adapter on the camera will not change its RASTER. An EX1 set at 1080p will produce a 1920x1080 raster no matter what adapter you put on there. An HDV camera will produce a 1440x1080 raster, no matter what (which is stretched to 1920x1080).

Actual resolution, though, does change when you add an adapter. Go shoot a resolution chart with the integrated lens and then with an adapter. The "softness" teddybear speaks of IS loss of resolution.


Edit: As for the answer to PIMP's question... I don't know :(
 
I guess then if PIMP shot a rez chart with and without an adapter he would find out.. one of those tests one could do easily on their own.
 
It's difficult to quantify just adapter resolution loss since the lens in front of it contribute to how sharp the image is as well.
 
I think the breakdown here is that your camera doesn't lose resolution or sharpness with an adapter. The camera is merely recording off a screen that sits right in front of its lens. What is losing sharpness is that ground glass or diffuser in the adapter. It softens the image that the camera records. Your camera is recording that image as sharp as it can with the same "resolution" as it does without the adapter, but it can't magically sharpen a soft image.
 
This thread is going downhill. Fast.

Huy brings up a very good point - quality glass is understated when it comes to these adapters. GG diffusion, lens quality and F-stop are all factors.

Point is - there is no universal answer. An adapter's light loss is unversial, but there are many factors/variables when it comes to determining the sharpness of a setup.
 
Yes ,

Sorry about my joke - but the point is there's no way to quantify this. Adapter footage is softer but it depends on many variables.
 
yeah but lens is not a part of adapter, you can always change it, GG is most important part and determines how much resolution is lost.
 
bwwd said:
yeah but lens is not a part of adapter, you can always change it, GG is most important part and determines how much resolution is lost.
Click to expand...

True, but how would you measure resolution loss without a lens on there? A quantitative way to look at resolution is to shoot a chart, but without a lens in front of the adapter that's not gonna happen.
 
PIMP,

(how did you pick that name anyway ?)
I just noticed your original question and I must disagree with previous response about 1080 on the HVX.

Barry Green initially thought 1080 added about 25% to your resolution and as I recall he chose to always shoot in 1080 when the camera first came out. Its also recommended for green screen for that reason.
The only reason most people shoot 720 is because it fills the card faster.

If you want to see the difference on a chart between adapter and no adapter look at charts I put on the web last year.

http://www.leonardlevy.net/Adapter_stills_master_Final.htm

These were shot at 720 on an HVX200 and most of the adapters have been upgraded a bit but you can still get a general idea. Best comparisons are probably the Brevis CF-1with flip and the Letus Extreme. I think Letus has upgraded their achromat since then but Brevis might still be the same - I'm not sure about the Brevis though. The SG Rev2 has been superceded by the Blade but I think resolution might be similar, though they now have more screens available and a new achromat in the works.

You can also see the big difference between EX-1 resolution and the HVX200.

I need to update these charts.

Lenny Levy
 
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you can actually test the lens degradation without the adapter.. just stick the lens on a long tube and focus the camera through it onto a chart. note the degradation... or i guess it would work better if you put a macro lens adapter on the cam..note the degradaiont, then mount lens in front of the macro lens and note its degradation.

so you can subtract the degradation of the macro lens from the degradation of the SLR lens..
 
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One more note about those charts. The Ex-1 adapter tests with both letus and Brevis are throughly out of date and should be ignored completely.
Also there is no test of the Letus Ultimate which presumably would be sharper.

Astigmatic - I didn't understand that at all.

Lenny Levy
 
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