49mm UV filter /protective filter for nex 5n

Started Feb 11, 2013 | Discussions thread
ropausa
Regular MemberPosts: 177
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Re: 49mm UV filter /protective filter for nex 5n
In reply to GaryW, Feb 14, 2013

GaryW wrote:

ropausa wrote:

GaryW wrote:

These sound like more reasons not to bother with a UV filter. I read a long time ago that you can put the hood on and consider that that offers some protection. Considering the high cost of a "good" filter, it's hard for me to justify on my inexpensive lenses, and on an expensive lens, would I want to compromise the IQ at all?

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Gary W.

I use the Canon 28 to 300mm L lens. It comes with a very impressive looking lens hood. But if the lens hood does not vignette at 28mm it does nothing in the way of protecting against flare at 300mm. If it did work effectively at 300mm it would vignette badly at 28mm. So I leave a Heliopan Digital filter on the lens at all times for both protection and improved colors.

The above effect will also be true of any other zoom lens with a hood, unless the hood is adjustable or you use a compendium. A non-adjustable hood on a zoom will always be designed for the widest focal length of the zoom and never for the longest focal length.

Good thing I don't use superzooms. For more modest zooms, I disagree that the hood would be useless against flare at the long end. But more to the original topic, even a "bad" hood would offer protection to the front element to some extent.

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Gary W.

No protection at any focal length from stuff coming at the lens from straight ahead and only partially at many angles to the front of the lens. A hood does not cover the lens.

And regardless of the range of the zoom. A hood made for the zoom is designed only to work at the widest zoom setting. The hood for my 16 to 35 Canon L is pretty good at 16mm but almost worthless at 35mm and this isn't a "Super Zoom".

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