Filter problem or lens problem?


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P3rSeUs

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Oct 29, 2007
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Hougang
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#1
Hi all,

I'm currently using a 50mm f1.8 II and a tokina UV filter to shoot these pictures.
Under low light condition with a presence of a strong light source, I can see reflections of the strong light sources through the viewfinder and when I take picture with it, spots (or reflections) will appear in the picture.

Here are some example shots taken from Esplanade. (pictures a bit blur cause taken without tripod)





The "Mandarin Oriental" word appeared in the sky (reflected from the building), taken at f1.8





Taken with filter on. Can even see the lights from the boat in the sky






Taken with UV Filter at f1.8, can see the reflections (inverted reflection) of the four spotlights and the 2 spotlights





Taken without the UV filter at f1.8, can see the blue spots right above the strong spot lights

Without the filter on, the spots will not be seen from the viewfinder but will show up in the pictures.


What would cause these problems?
 

Apr 12, 2005
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#7
Hi all,

I'm currently using a 50mm f1.8 II and a tokina UV filter to shoot these pictures.
Under low light condition with a presence of a strong light source, I can see reflections of the strong light sources through the viewfinder and when I take picture with it, spots (or reflections) will appear in the picture.





Taken without the UV filter at f1.8, can see the blue spots right above the strong spot lights

Without the filter on, the spots will not be seen from the viewfinder but will show up in the pictures.


What would cause these problems?
The last one is probably due to the lens since the filter is off now.

Anyway, ghosting is a reflection of strong concentratd light either off the inner surface of the filter or the lens elements and you can see them if you invert your picture like the one below :

Original :


 

DeadEnd

New Member
Nov 24, 2006
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Ang Mo Kio
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#8
The ghosting are due to the non multicoating on the tokina filter. And also the 50mm f1.8 will cause ghosting when shoot at wide open which is very common for fast lens. But why do u want to shoot landscape at f1.8?
 

alternatve

Senior Member
Dec 30, 2006
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#11
Alternatively, use a hood. However, in this case, it won't work as well.

Samuel
 

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