Lens Hoods : Why Do They Have Different Shapes?

Prasul Surendran By Prasul Surendran, 28th Jun 2011 | Follow this author | RSS Feed | Short URL http://nut.bz/1dktr9bu/
Posted in Wikinut>Guides>Technology>Cameras

Why do we have circular or square or Petal hoods?

Lens Flare

Due to the shape in which lens are made up, while shooting up in broad sunlight or in evenings, you will have noticed the flare happening if you are not having a lens hood attached. The Nikon kit lens users will have to go ahead and try removing the lens hood as the kit lens does come with a petal hood. The canon people will already know what this is.
Lens Hood was an attempt to clear out the glare that hits you through the edges -

It just acts as a shade for the lens. The size n shape of lens hood depends on the nature of use.

The different types of Lens Hoods:

As you might have noticed on the vendor sites there are different hood types depending on the lens. For zoom lenses we mostly have the circular hood which is quite thick, the tamrons and sigma’s 70-300 mostly comes with this kind of lens hood. It blocks most of the light that enters through the side as the exposure of lens is more narrow.

A. Circular Lens Hood

There is another variant of circular lens hood which is normally used on wide angle lenses to prevent vignetting at the sides.

The trouble with circular hoods is the edges that the hood creates which can increase the risk of flares on your photos.

B. Square Lens Hood

The square hoot tries to elimiate the short comings of circular hoods, as it covers the complete area of the scene and can be long as circular hoods but still provide you with a better image. The shortcomings on these hoods was the size and incompatibilty to be carried around as it consumed more space.

C. Tulip Lens Hood

The tulip or the petal hoods were introduced with this change . This tries to give in the coverage as good as rectangle hoods and also having cut edges to avoid the shortcomings of flare on circular hoods. Mostly the the petal hoods and cut off petal hoods are widely used, the canon dream 70-200mm 2.8 has a wonderful hood which appeals a lot of nikonians too.

Should I really Use Lens Hood?

My answer is yes, please! Its not only the protection that it provides to your precious glass, which is the most popular belief for a lens hood, but it is the quality on the edges that matter. As you progress through your skills you will always want your image to be sharp from the edge to edge. So once you have this into consideration keeping a lens hood on will yeild you best results.

There are situations where this will fail, when you shoot using an inbuilt flash or an external overhead you can simply remove them or in situations where you are shooting ultra wide. But for otherwise, you can keep the hood on and you will find the difference on edges. You will rarely find a professional photographer vote against the lens hood!
Thank you guys, a few goodies for Nikon fans!

Tags

Circular Lens Hood, Lens Hood, Petal Hood, Photography, Tulip Hood, Use Of Lens Hood

Meet the author

author avatar Prasul Surendran
I am an engineer working as systems analyst in one of the leading firms. Writing has been my passion and through various blogs and forums I try to portray my will.

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Comments

author avatar Kina Michelle
29th Jun 2011 (#)

Very informative, its an interesting topic to me, my friend is a photographer, and he has a lot of those covers that you mentioned, nice one.

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author avatar jak2010
29th Jun 2011 (#)

Very informative, a subject that I really I do not have any idea whatsoever on and a read for me. Thanks.

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author avatar Buzz
29th Jun 2011 (#)

Great share, my friend. Thanks.

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author avatar THARA RAJEEV
29th Jun 2011 (#)

Good share Prasul.

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author avatar Prasul Surendran
29th Jun 2011 (#)

Thank you Kina, Jak, Buzz and Thara for your support :)

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author avatar Delicia Powers
29th Jun 2011 (#)

Outstanding Prasul,... thanks:0)

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author avatar Songbird B
30th Jun 2011 (#)

Interesting article, Prasul, and nicely illustrated too. Good work...

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author avatar wonder
30th Jun 2011 (#)

My cousin has a powerful camera
and I got interested in the lenses then.A good share I read it with interest.

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author avatar Prasul Surendran
30th Jun 2011 (#)

Thank you Delicia, Song Bird and Wonder :) Glad that you found it interesting...

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author avatar vpaulose
30th Jun 2011 (#)

Good information. Thank you dear Prasul.

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author avatar Jiggsm
30th Jun 2011 (#)

Thanks for the info. Guess I need to replace my broken hood again. :D

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author avatar Neha Dwivedi
1st Jul 2011 (#)

a very informative share prasul

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author avatar Prasul Surendran
2nd Jul 2011 (#)

Thank you paulose, Jiggsm and geeta :)

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