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Canon Lens Hoods - Straight or Flower Design?

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Mike717

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I have a Canon XSi and I want to buy a lens hoods for my EF-S 18-55mm and EF-S 55-250mm lenses. I can get a straight hood for around $11.00 or the Canon rotating flower design for around $27.00.

I notice most of the pros seem to use the flower design on there lenses. Does the flower design produce better image quality than the straight hood and does rotating adjust the amount of sun protection? I don't mind paying the extra money if the flower design will produce better results and is more versatile.

Thanks for any info!
Mike
 
The "flower" design is for wide angle, so you won't get vignetting, "straight" one is for telephoto.
http://en.wikipedia.org/wiki/Vignetting
Mike717 said:
I have a Canon XSi and I want to buy a lens hoods for my EF-S 18-55mm and EF-S 55-250mm lenses. I can get a straight hood for around $11.00 or the Canon rotating flower design for around $27.00.

I notice most of the pros seem to use the flower design on there lenses. Does the flower design produce better image quality than the straight hood and does rotating adjust the amount of sun protection? I don't mind paying the extra money if the flower design will produce better results and is more versatile.

Thanks for any info!
Mike
Click to expand...
--
Yongbo
http://www.photo96.com/
 
Actually the flower design is for lenses without rotating front elements (ie the 70-200 F2.8 IS comes with a petal hood). A flower/petal hood will not work if the front element rotates.
yongbo said:
The "flower" design is for wide angle, so you won't get vignetting, "straight" one is for telephoto.
http://en.wikipedia.org/wiki/Vignetting
Mike717 said:
I have a Canon XSi and I want to buy a lens hoods for my EF-S 18-55mm and EF-S 55-250mm lenses. I can get a straight hood for around $11.00 or the Canon rotating flower design for around $27.00.
Click to expand...
Click to expand...
The manuals that came with your lenses will tell you exactly which hood you need for each lens.
 
Hi,

Both your 18-55mm and 55-250mm have rotating front elements, so petal-type hood won't work for you. What you need is straight-type hood. Lenses like EF-S 17-85mm f/4-5.6 IS USM or EF 70-200mm f/4 IS USM have non-rotating front elements, and therefore have petal-type hood as accessories.

Thanks,

Alan
 
Thanks for the reply, I didn't buy enough hoods to figure that out. :)
iMac said:
Actually the flower design is for lenses without rotating front elements (ie the 70-200 F2.8 IS comes with a petal hood). A flower/petal hood will not work if the front element rotates.
yongbo said:
The "flower" design is for wide angle, so you won't get vignetting, "straight" one is for telephoto.
http://en.wikipedia.org/wiki/Vignetting
Mike717 said:
I have a Canon XSi and I want to buy a lens hoods for my EF-S 18-55mm and EF-S 55-250mm lenses. I can get a straight hood for around $11.00 or the Canon rotating flower design for around $27.00.
Click to expand...
Click to expand...
The manuals that came with your lenses will tell you exactly which hood you need for each lens.
Click to expand...
--
Yongbo
http://www.photo96.com/
 
I believe this is not totally correct, the EF 70-200 f/4 has a "straight-type" hood.

http://www.the-digital-picture.com/Reviews/Canon-EF-70-200mm-f-4.0-L-IS-USM-Lens-Review.aspx

Images comparing it to the f/2.8 are down the page.

Cheers

Richard
akcli2007 said:
Hi,

Both your 18-55mm and 55-250mm have rotating front elements, so petal-type hood won't work for you. What you need is straight-type hood. Lenses like EF-S 17-85mm f/4-5.6 IS USM or EF 70-200mm f/4 IS USM have non-rotating front elements, and therefore have petal-type hood as accessories.

Thanks,

Alan
Click to expand...
 
Although you were partially right - for a zoom lens the petal cut outs only come into play on the wide end of the zoom range.
yongbo said:
iMac said:
Actually the flower design is for lenses without rotating front elements (ie the 70-200 F2.8 IS comes with a petal hood). A flower/petal hood will not work if the front element rotates.
yongbo said:
The "flower" design is for wide angle, so you won't get vignetting, "straight" one is for telephoto.
http://en.wikipedia.org/wiki/Vignetting
Mike717 said:
I have a Canon XSi and I want to buy a lens hoods for my EF-S 18-55mm and EF-S 55-250mm lenses. I can get a straight hood for around $11.00 or the Canon rotating flower design for around $27.00.
Click to expand...
Click to expand...
The manuals that came with your lenses will tell you exactly which hood you need for each lens.
Click to expand...
--
Yongbo
http://www.photo96.com/
Click to expand...
--
Some cool cats that can use your help
http://www.wildlife-sanctuary.org

Even if you can't donate, please help spread the word.
 
yup my 70-200 F4L IS has a straight hood.
probably coz F4 isnt as wide as the F2.8 to necessitate a petal hood.
 
freakin' huge compared to the lens barrel. The hood could be narrower and shorter and have the same coverage.
 
Mike717 said:
Thanks for info...I'll get the straight and see how it works. If I read it right, Amazon says the flower design is compatible with my lens. It sounds like it won't much of a difference anyway.

http://www.amazon.com/s/?ie=UTF8&keywords=canon+55-250+hood&tag=googhydr-20&index=electronics&hvadid=3288657531&ref=pd_sl_281jovp6h7_b

Mike
Click to expand...
That's not a Canon hood (not that you need to get a canon one). It's a generic petal hood that can be put on any lens that has an 58mm filter ring - so it's screw in. And petal hoods are NOT a good idea on lenses whose front rotates.

I wouldn't get that, go for the Canon or look-alike bayonette hoods that mount on the lens, not the filter thread.

--
Life is short, time to zoom in ©
 
Well I think so...I've looked at available hoods, from Canon's OEM full circle to "3 level" type rubber hoods, and all look cheap to me...then found this at a pawn shop...it snapped on and it works great...and looks substantial too...

It's an Olympus LH-61...once it snaps on there's a 1/4 inch play that will fit any FL at any focusing distance...once set, the only circumstances where I need to rotate/remove the hood is:

1. to eliminate vignetting at one corner @ 18mm when focusing less than 3'...the little rotation of the front element has no impact on FLs longer than 22mm and at distances beyond arm's length...
2. the longer top petal casts a shadow from the 40D's on-board flash @

 
Actually, it makes no difference whether the lens elements rotate!

The optimal design for any lens, wide or long, rotating or not, is a petal. The only way the front element rotation can matter is if the hood is attached to the front element (some lenses with rotating front elements have the hood bayonet onto the lens barrel)

The reason is that if you look at the 3:2 rectangular dimensions of the sensor, the corners are the closest to the edges of the circular image circle.

What that means is that the parts of the image not in corners can have a longer shade without vignetting onto the sensor. Since the longer the better that's a good idea regardless of focal length. But since the corners can't be as long, that gives you the petal shape
 
Mike717 said:
Thanks as that makes the most sense. I had my polarizing filter screwed on Sunday at an air show.

Mike
Click to expand...
you do know that you have to adjust the cpl depending on the position of the sun?
(which is tedious with lenses whose front rotates for focus)

--
Life is short, time to zoom in ©
 
dbm305 said:
Actually, it makes no difference whether the lens elements rotate!

The optimal design for any lens, wide or long, rotating or not, is a petal. The only way the front element rotation can matter is if the hood is attached to the front element (some lenses with rotating front elements have the hood bayonet onto the lens barrel)
Click to expand...
that is the point, on the 18-55 / 55 -250, the whole front, including the bayonet rotates, hence it would be very cumbersome to have a petal that you need to adjust after focusing.
dbm305 said:
The reason is that if you look at the 3:2 rectangular dimensions of the sensor, the corners are the closest to the edges of the circular image circle.

What that means is that the parts of the image not in corners can have a longer shade without vignetting onto the sensor. Since the longer the better that's a good idea regardless of focal length. But since the corners can't be as long, that gives you the petal shape
Click to expand...
--
Life is short, time to zoom in ©
 
Canon's listed hoods for those two lenses are the straight design so I would go with them. By the way I assume you know you are looking for two different hoods and not 1 that will work with both lenses. If you tried to use 1 it would either be useless on the telephoto or vignette the wide angle.

--
Steve
http://www.pbase.com/mastels
 
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