Author Topic: 0.45x Wide Angle Converter Lens Issue?  (Read 5013 times)

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Offline urkrnboy90

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0.45x Wide Angle Converter Lens Issue?
« on: December 14, 2008, 07:55:11 AM »
So when I attach my wide angle converter lens to end of my 18-70mm lens, I can't seem to use the lens with its widest angle. Every time I zoom the lens in to the farthest, I get these black soft edges around my frame. I'm sort of a beginner with wide angle lens and was wondering if that was normal if that just means that my wide angle converter was trash.

I've heard that wide angle converters are no good, but I've also heard that they were.
Any tips on how to use them to get their full effects? Or if they're trash just let me know haha.

Thanks!

-J
It's not the camera, nor the lens, but the person behind the camera that makes the difference.

Check out my blog about photography at http://www.htlion.blogspot.com

Offline dominicall

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Re: 0.45x Wide Angle Converter Lens Issue?
« Reply #1 on: December 14, 2008, 10:04:53 AM »
The soft black edges are known as vignettes. All that is happening is that edges of the converter are being 'seen' by the sensor. Some lenses get this even with just a UV filter on.

You can try to get rid of vignettes by stopping the lens down (i.e. from f4 to f11) but that doesn't always work - it depends on how much of the converter is in the field of view of the lens.

Hope that helps.

Dominic
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Offline urkrnboy90

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Re: 0.45x Wide Angle Converter Lens Issue?
« Reply #2 on: December 14, 2008, 07:47:40 PM »
Oh, I see...I'll have to try that later today :)
But also, my converter lens has a macro lens attached to it as well. I can screw this off but was wondering if I have to screw it off and attach that macro lens separately to get the macro to work, or if I leave it attached to the converter lens and attach both of them to my camera body to get both the wide angle + macro features.
It's not the camera, nor the lens, but the person behind the camera that makes the difference.

Check out my blog about photography at http://www.htlion.blogspot.com