Bad vignetting with the 170, Examples inside

Did you try other scene settings other than Cine D such as B-STR?

FWIW, I haven't done any extensive tests yet, but I just pointed my 170 using the widest zoom at a flat gray wall in my house lit pretty evenly by the afternoon sun, and simply judging from the LCD, the different scene settings seemed to affect the apparent luminance in the corners of the screen.... Cine D did seem very slightly darker in the lower corners than B-STR for example...

What did you do exactly to 'try and bring it out more' in your second photo post?
 
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The vignetting on a lens is usually worst at it's widest setting and it's widest aperture.

In this case, be sure to stop down the iris and/or zoom in a little bit.

Vignetting is more noticeable on plain colors like a blue sky or in this case, snow.

This is a well known issue with photo lenses.
 
SPrimeau said:
The vignetting on a lens is usually worst at it's widest setting and it's widest aperture.

In this case, be sure to stop down the iris and/or zoom in a little bit.

Vignetting is more noticeable on plain colors like a blue sky or in this case, snow.

This is a well known issue with photo lenses.
Click to expand...

just one thing that debunks this....

1. Panasonic (Leica) wouldn't make a lens that goes that wide if it causes vignetting.
Especially when it's a feature that they advertise that this camera goes wider than the HVX.


DM_Rider, are you using any kind of wide angle adapter or is this just your stock lens? Are you using any kind of screw on filter? Can you post a still of an "after" shot without the lens hood on and see if you still get vignetting. I can't really think of anything else that would cause this.... maybe, you just got the bad apple of the bunch. Maybe that bad apple is the lens hood itself.
 
Look at photographic lenses, many pro lenses can suffer of vignetting.

Many wide angle lenses have this problem. But it can be other problems too.
 
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Make sure the front base plate (?) is screwed all the way in, could be it.... I'm running out of ideas here for you Angelcyk. Have you called Pana to see what they say ?
 
twocik23 said:
Make sure the front base plate (?) is screwed all the way in, could be it.... I'm running out of ideas here for you Angelcyk. Have you called Pana to see what they say ?
Click to expand...

It's DM_Rider's cam


twocik23 said:
Look at photographic lenses, many pro lenses can suffer of vignetting.

Many wide angle lenses have this problem. But it can be other problems too.?
Click to expand...

Please correct me if I'm wrong but it sounds like you are saying that vignetting is common from the lenses in the 170. Does anybody here that has a 170 also get this vignetting?
 
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Angelcyk said:
It's DM_Rider's cam




Please correct me if I'm wrong but it sounds like you are saying that vignetting is common from the lenses in the 170. Does anybody here that has a 170 also get this vignetting?
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I don't say that it's common from the lenses in the 170.

I say that it's a well known issue on many pro grade photographic lenses.
 
Angelcyk said:
just one thing that debunks this....

1. Panasonic (Leica) wouldn't make a lens that goes that wide if it causes vignetting.
Especially when it's a feature that they advertise that this camera goes wider than the HVX.
Click to expand...

I beg to differ. The vignetting in your samples isn't really much. You see it because you are looking for it in shots with uniform white color at the edges. I think your demands are too sophisticated for a lower-end professional camera like the HPX 170. It's not top of the line, the lens cannot perform as well as some 40K glass - and even that glass will show some flaws if you're looking hard enough...
 
I sent Panasonic a tech request thing so we'll see what they say. If there's nothing they can do about it, then just avoid shooting cine d at full wide when shooting bright white areas...
 
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