UZI vignettes in total wide mode, with no filters?

[Jay49332]

I thought it was slightly weird to see
vignetting on the corners at full wide angle,
with just step up ring(49-52) and UV filter,
so I started testing.
(vignettes very slightly though. no hard black areas
just slightly dark.)

So, i did an experiment. I shot at
white walls. Full wide angle.

-with Stepupring + uv filter -> slight vignetting.

• -:- +skylight filter -> slight vignetting.
• -:- +CPL -> slight vignetting
• -:- + UV + CPL -> noticeable vignetting.

-without anything. -> no vignetting.

so, do any of you guys have the same problem?

-for those using step up+UV -> do you have the same problem?
-for those using 49mm filters -> do you have any slight vignetting?
--Jay,
Norway.

 

[Jay49332]

I just notices, the title seems weird. it doesn't match the subject...--Jay,Norway.

 

[Jay49332]

This is what I use-

-HAMA 49-52 step up ring
-B+W UV HAZE FILTER - MRC
-Spectralstar Skylight filter
-Hakuba CPL Filter

Can anyone give me a good solution?
Should I just go down to 49mm?
or, change all my step up rings and filters
to bigger size such as 55mm or 58mm
to avoid vignetting as much as possible?
(but wouldn't the AF assist lamp be blocked by, say 58mm filters?)

thank your in advance

I thought it was slightly weird to see
vignetting on the corners at full wide angle,
with just step up ring(49-52) and UV filter,
so I started testing.
(vignettes very slightly though. no hard black areas
just slightly dark.)

So, i did an experiment. I shot at
white walls. Full wide angle.

-with Stepupring + uv filter -> slight vignetting.

• -:- +skylight filter -> slight vignetting.
• -:- +CPL -> slight vignetting
• -:- + UV + CPL -> noticeable vignetting.

-without anything. -> no vignetting.

so, do any of you guys have the same problem?

-for those using step up+UV -> do you have the same problem?
-for those using 49mm filters -> do you have any slight vignetting?

--
Jay,
Norway.

--Jay,Norway.

 

[Atlanta-Mike]

Jay, I have seen this same problem. I was taking some sample shots of a white wall using the flash (trying to figure out the right white balance to use) and this is one of the photos I got:



And look what happen after I applied Autolevels in Photoshop;



I was about 5 or 6 feet from the wall and had the flash on. Also, I have a UV filter that I leave on the lens. Although the EXIF data says I was at 39mm, I was wide open, which I thought was 38mm??

Mike H

I thought it was slightly weird to see
vignetting on the corners at full wide angle,
with just step up ring(49-52) and UV filter,
so I started testing.
(vignettes very slightly though. no hard black areas
just slightly dark.)

So, i did an experiment. I shot at
white walls. Full wide angle.

-with Stepupring + uv filter -> slight vignetting.

• -:- +skylight filter -> slight vignetting.
• -:- +CPL -> slight vignetting
• -:- + UV + CPL -> noticeable vignetting.

-without anything. -> no vignetting.

so, do any of you guys have the same problem?

-for those using step up+UV -> do you have the same problem?
-for those using 49mm filters -> do you have any slight vignetting?

--
Jay,
Norway.

 

[Sandman]

Jay,

I just did the same test and my UZI does the same thing, with and without my Tiffen UV/haze 49mm filter. I could not see ANY difference with and without the filter.

Jim

wrote:

I thought it was slightly weird to see
vignetting on the corners at full wide angle,
with just step up ring(49-52) and UV filter,
so I started testing.
(vignettes very slightly though. no hard black areas
just slightly dark.)

So, i did an experiment. I shot at
white walls. Full wide angle.

-with Stepupring + uv filter -> slight vignetting.

• -:- +skylight filter -> slight vignetting.
• -:- +CPL -> slight vignetting
• -:- + UV + CPL -> noticeable vignetting.

-without anything. -> no vignetting.

so, do any of you guys have the same problem?

-for those using step up+UV -> do you have the same problem?
-for those using 49mm filters -> do you have any slight vignetting?

--
Jay,
Norway.

--galleries at: http://www.pbase.com/sandman3

 

[Jay49332]

Hi, so how big is the UV filter?
49mm or 52mm?

And look what happen after I applied Autolevels in Photoshop;



I was about 5 or 6 feet from the wall and had the flash on. Also,
I have a UV filter that I leave on the lens. Although the EXIF
data says I was at 39mm, I was wide open, which I thought was 38mm??

Mike H

I thought it was slightly weird to see
vignetting on the corners at full wide angle,
with just step up ring(49-52) and UV filter,
so I started testing.
(vignettes very slightly though. no hard black areas
just slightly dark.)

So, i did an experiment. I shot at
white walls. Full wide angle.

-with Stepupring + uv filter -> slight vignetting.

• -:- +skylight filter -> slight vignetting.
• -:- +CPL -> slight vignetting
• -:- + UV + CPL -> noticeable vignetting.

-without anything. -> no vignetting.

so, do any of you guys have the same problem?

-for those using step up+UV -> do you have the same problem?
-for those using 49mm filters -> do you have any slight vignetting?

--
Jay,
Norway.

--Jay,Norway.

 

[Daniella68313]

Funny that you mention that, because i brought that up in another thread and one angry C2100 user said he never have vigneting with the UV filter on, and he says he can even stack UV and PL and never get vigneting..i think he was lying

Anyway, he was really frustrated that i even mention this, so be careful..he might get on your back for saying the truth LOL

http://www.dpreview.com/forums/read.asp?forum=1008&message=1862488

I am surprised that you have vigneting even with the step up ring though.

I thought it was slightly weird to see
vignetting on the corners at full wide angle,
with just step up ring(49-52) and UV filter,
so I started testing.
(vignettes very slightly though. no hard black areas
just slightly dark.)

So, i did an experiment. I shot at
white walls. Full wide angle.

-with Stepupring + uv filter -> slight vignetting.

• -:- +skylight filter -> slight vignetting.
• -:- +CPL -> slight vignetting
• -:- + UV + CPL -> noticeable vignetting.

-without anything. -> no vignetting.

so, do any of you guys have the same problem?

-for those using step up+UV -> do you have the same problem?
-for those using 49mm filters -> do you have any slight vignetting?

--
Jay,
Norway.

--Daniella http://www.pbase.com/zylenC7OO discussion group: http://www.homepet.com/cgi-bin/c700/UltraBoard.cgi

 

[say10]

I got my uzi about a week ago and on a couple shots at full wide i had some very minor vignetting in the upper right hand corner with a skylight......im using quantaray filters and when i tried to stack a polarizer on top of the skylight the vignetting became so bad i just deleted the pics instead of getting knee deep in some cropping, but of course that had to do with these cheap ritz filters.......

 

[Daniella68313]

I just did the test and with a UV and a PL atached i don't get any vigneting with wide angle 38mm.

I have a 45.6-52mm adapter and filter. maybe you need a bigger step up ring, like 55mm instead of 52mm

Also could it be that the stepup ring itself is doing the vigneting?

-HAMA 49-52 step up ring
-B+W UV HAZE FILTER - MRC
-Spectralstar Skylight filter
-Hakuba CPL Filter

Can anyone give me a good solution?
Should I just go down to 49mm?
or, change all my step up rings and filters
to bigger size such as 55mm or 58mm
to avoid vignetting as much as possible?
(but wouldn't the AF assist lamp be blocked by, say 58mm filters?)

thank your in advance

I thought it was slightly weird to see
vignetting on the corners at full wide angle,
with just step up ring(49-52) and UV filter,
so I started testing.
(vignettes very slightly though. no hard black areas
just slightly dark.)

So, i did an experiment. I shot at
white walls. Full wide angle.

-with Stepupring + uv filter -> slight vignetting.

• -:- +skylight filter -> slight vignetting.
• -:- +CPL -> slight vignetting
• -:- + UV + CPL -> noticeable vignetting.

-without anything. -> no vignetting.

so, do any of you guys have the same problem?

-for those using step up+UV -> do you have the same problem?
-for those using 49mm filters -> do you have any slight vignetting?

--
Jay,
Norway.

--
Jay,
Norway.

--Daniella http://www.pbase.com/zylenC7OO discussion group: http://www.homepet.com/cgi-bin/c700/UltraBoard.cgi

 

[Daniella68313]

I don't think it has anything to do with cheap Ritz filters...has i am using only cheap filters and i don,t have any vigneting..i think its combinaison of the C2100 lens and filters. May be its just too long to handle filters right. I know Olympus designed the C700 very differently and it was probably to avoid vigneting.

At first i thought it was strange that they would design the camera with the outer tube wider than the lens...now i understand the idea... NO vigneting even when stacking UV and 2 closeup filters. NO vigneting when stacking UV and PL, all this at full wide angle.

If you have this with of without the filters, i would think its the camera lens that is designed that way.

I got my uzi about a week ago and on a couple shots at full wide i
had some very minor vignetting in the upper right hand corner with
a skylight......im using quantaray filters and when i tried to
stack a polarizer on top of the skylight the vignetting became so
bad i just deleted the pics instead of getting knee deep in some
cropping, but of course that had to do with these cheap ritz
filters.......

--Daniella http://www.pbase.com/zylenC7OO discussion group: http://www.homepet.com/cgi-bin/c700/UltraBoard.cgi

 

[Terry Thorn]

Funny that you mention that, because i brought that up in another
thread and one angry C2100 user said he never have vigneting with
the UV filter on, and he says he can even stack UV and PL and never
get vigneting..i think he was lying

Apparently it is YOU who has trouble with the TRUTH, Daniella. I never said that I never had vignetting with stacked filters on the 2100 because I don't do that and never have done so with the 2100. Even in the message link YOU provided, I never made the statement YOU said I did. I'm offended that you misrepresent me in such a way.

Anyway, he was really frustrated that i even mention this, so be
careful..he might get on your back for saying the truth LOL

http://www.dpreview.com/forums/read.asp?forum=1008&message=1862488

 

[say10]

Well when i said cheap filters i meant as opposed to some more expensive ones ive seen that claim to be "thin". And whatever causes it, vignetting is vignetting, i just know what works.....

I don't think it has anything to do with cheap Ritz filters...has i
am using only cheap filters and i don,t have any vigneting..i think
its combinaison of the C2100 lens and filters. May be its just too
long to handle filters right. I know Olympus designed the C700
very differently and it was probably to avoid vigneting.

At first i thought it was strange that they would design the camera
with the outer tube wider than the lens...now i understand the
idea... NO vigneting even when stacking UV and 2 closeup filters.
NO vigneting when stacking UV and PL, all this at full wide angle.

If you have this with of without the filters, i would think its the
camera lens that is designed that way.

 

[Terry Thorn]

I don't think it has anything to do with cheap Ritz filters...has i
am using only cheap filters and i don,t have any vigneting..i think
its combinaison of the C2100 lens and filters. May be its just too
long to handle filters right. I know Olympus designed the C700
very differently and it was probably to avoid vigneting.

At first i thought it was strange that they would design the camera
with the outer tube wider than the lens...now i understand the
idea... NO vigneting even when stacking UV and 2 closeup filters.
NO vigneting when stacking UV and PL, all this at full wide angle.

If you have this with of without the filters, i would think its the
camera lens that is designed that way.

See how you pounce on anything negative about the 2100 in order to promote the C700? You're even stretching things a bit by suggesting Olympus redesigned the C700 specifically because of this largely unknown "problem". More likely, the C700's design resulted in cost cutting measures and product realignment.

 

[Atlanta-Mike]

49mm

Hi, so how big is the UV filter?
49mm or 52mm?

 

[Mike S40523]

There is NO reason to ever stack filters ... if vignetting is a problem ( and this happens on other cameras no matter what Daniella thinks) just use a step up ring and larger filters VOILA!!

I got my uzi about a week ago and on a couple shots at full wide i
had some very minor vignetting in the upper right hand corner with
a skylight......im using quantaray filters and when i tried to
stack a polarizer on top of the skylight the vignetting became so
bad i just deleted the pics instead of getting knee deep in some
cropping, but of course that had to do with these cheap ritz
filters.......

 

[Mike S40523]

That is not vignetting.. that is flash fall off

And look what happen after I applied Autolevels in Photoshop;



I was about 5 or 6 feet from the wall and had the flash on. Also,
I have a UV filter that I leave on the lens. Although the EXIF
data says I was at 39mm, I was wide open, which I thought was 38mm??

Mike H

I thought it was slightly weird to see
vignetting on the corners at full wide angle,
with just step up ring(49-52) and UV filter,
so I started testing.
(vignettes very slightly though. no hard black areas
just slightly dark.)

So, i did an experiment. I shot at
white walls. Full wide angle.

-with Stepupring + uv filter -> slight vignetting.

• -:- +skylight filter -> slight vignetting.
• -:- +CPL -> slight vignetting
• -:- + UV + CPL -> noticeable vignetting.

-without anything. -> no vignetting.

so, do any of you guys have the same problem?

-for those using step up+UV -> do you have the same problem?
-for those using 49mm filters -> do you have any slight vignetting?

--
Jay,
Norway.

 

[Terry Thorn]

That is not vignetting.. that is flash fall off

I was thinking the same thing after cooling off from being called a liar and then being lied about by Daniella. It could be flash fall-off but it seems too symmetrical. It would make sense to take a picture of the wall without flash and see what difference that makes. I never have stacked filters. I've always believed in using the least amount of glass needed.

 

[Mike S40523]

Tery

It looks like the flash fall off patterns I see on various tests on the net I cant remember if it was here or at Steve's. And MOST digicams with built in flash exhibit this at wider angles.

As far as the filter stacjking thae point i have been trying to make is that you want to use as few extra glass surfaces as possible because of all the various problems that can occur. And that id not just on UZIs or even on digicams but on all cameras

That is not vignetting.. that is flash fall off

I was thinking the same thing after cooling off from being called a
liar and then being lied about by Daniella. It could be flash
fall-off but it seems too symmetrical. It would make sense to take
a picture of the wall without flash and see what difference that
makes. I never have stacked filters. I've always believed in using
the least amount of glass needed.

 

[say10]

Oh well excuse me......if you can get away with stacking filters i dont see the big deal.....yeah each filter is going to impact the image in a different way blah blah blah, but whats the point of having a filter to protect the lens if your unscrewing the thing every time you need to switch filters? I would be far more likely to damage the cameras lens if im always going to have to fiddle with a UV everytime i need a polarizer -- the bottom line with filters and post processing and what not to me is personal preference......if you like a skylight better than a UV or if you like the effect a filter gives as opposed to what you can do in post processing than do watcha like.....

I got my uzi about a week ago and on a couple shots at full wide i
had some very minor vignetting in the upper right hand corner with
a skylight......im using quantaray filters and when i tried to
stack a polarizer on top of the skylight the vignetting became so
bad i just deleted the pics instead of getting knee deep in some
cropping, but of course that had to do with these cheap ritz
filters.......

 

[Terry Thorn]

Tery
As far as the filter stacjking thae point i have been trying to
make is that you want to use as few extra glass surfaces as
possible because of all the various problems that can occur. And
that id not just on UZIs or even on digicams but on all cameras

I'm in total agreement with you. My priority is optimum image quality and I feel that's better achieved with the least amount glass between the film (or CCD) and the subject.