Why Canon lenses white?

2 months 1 week ago #674021 by Travis Brunson
Can someone tell me what is the deal behind Canon lenses being white?

*some of Canon lenses being white.  


Please Log in or Create an account to join the conversation.

,
2 months 1 week ago - 2 months 1 week ago #674035 by Nikon Shooter
Form Canon Infobank.

Most EF lenses have black barrels, but a few are white (actually
a light grey or beige). The white lenses are all large super-tele-
photos. There is a good reason for this.

Lenses contain glass elements. These expand with heat. This is not
usually a problem with compact lenses − the amount of expansion
is small. But large lenses contain large elements and here expansion
can bring a lens close to the limits of its design tolerances. A white
surface reflects sunlight, helping to keep the lens cooler.

Incidentally, you will find that the manual focusing action of some
black lenses allows focusing past its infinity setting (sometimes called
over-focusing). This is also to allow for expansion. If the lens is used
in hot conditions, infinity focusing will be closer to the end of the travel.

Light is free… capturing it is not!
This person is a posting maniac and deserves a #1 badge!Top Poster
Photo Comments

Please Log in or Create an account to join the conversation.

,
2 months 1 week ago #674066 by garyrhook
Despite what Canon says, at one point they only had black lenses. Lore says that they wanted their products to stand out (at football games, etc) so they made them white to differentiate.

I'm willing to bet that the amount of expansion in a lens casing, between 0 and 100 C, is irrelevant. They would be (should be) choosing materials that resist the effects of temperature change.

Any lens in the sun in Texas is going to get warm. Just like a car. So I'll opine that the above quote from Canon is drivel.

I could be wrong, but black lens bodies from Nikon have never resulted in complaints about "my 70-200" won't perform properly when it's 90F outside!"


Photo Comments

Please Log in or Create an account to join the conversation.

,
2 months 1 week ago #674082 by Nikon Shooter

garyrhook wrote: So I'll opine that the above quote from Canon is drivel.



When I search for " Why Canon lenses are white?", I just 
couldn't leave the thread without quoting was Canon
sent out there to justify the ugliest decision ever made!

Nikkor too uses fluoride glass in their long lenses! 

Light is free… capturing it is not!
This person is a posting maniac and deserves a #1 badge!Top Poster
Photo Comments

Please Log in or Create an account to join the conversation.

,
2 months 1 week ago #674100 by effron
Yup, some fall for anything. I've had Nikons of many lengths in quite hot conditions and NEVER an issue.

Why so serious?
Photo Comments

Please Log in or Create an account to join the conversation.

,

802.3K

205K

1.62M

  • Facebook

    802,251 / Likes

  • Twitter

    205,000 / Followers

  • Google+

    1,620,816 / Followers

Latest Reviews

The Sony a7S II might be almost five years old, but as you'll see in this Sony a7S II review, it still packs a mighty punch with a small price tag.

Mar 23, 2020

In this Nikon D780 review, learn about the D780's features, specs, video capabilities, and more. Also learn how to score a discounted price on a D780 and how you can extend your gear budget!

Mar 13, 2020

In the Sony a6000 vs Sony a6100 battle, which one comes out on top? One offers a lower price tag while the other has more updated features. Find out which camera is best for you in this buyer's guide.

Mar 13, 2020

The Canon EOS RP is an entry-level camera that has some excellent features. In this Canon EOS RP review, learn all about its pros, cons, features, price, and more!

Mar 03, 2020

Forum Top Posters

Latest Articles

This Max Art Pro canvas print review offers insights into the quality of Max Art Pro canvases, as well as a few things about Max Art Pro, like their products, promo codes, return policy, and more.

Apr 08, 2020

Dragging big, heavy, and complicated lighting gear around simply isn't necessary. With these portable lighting tips, you can get the light you need without the frustration and expenditure of money!

Apr 07, 2020

In this Nations Photo Lab metal print review, learn about the quality of my metal print, as well as details about Nations Photo Lab, Nations Photo Lab products, and much more!

Apr 07, 2020

With these tips for photographing real estate, you'll learn how to prep a home for photos in the springtime for maximum visual appeal.

Apr 07, 2020

Shutterfly is a household name for photographic prints. In this Shutterfly metal print review, find out if this popular Shutterfly product is a must or if you should skip it.

Apr 06, 2020

The mirrorless vs. DSLR debate has raged for years. So which one is best for 2020? Find out in this camera gear comparison guide.

Apr 06, 2020

To create a vlog people want to watch, you need the right vlogging accessories. But you don't have to spend a fortune on accessories for vlogging...get some budget-friendly recommendations!

Apr 06, 2020

Mpix is a popular online printer. But the question is, are Mpix products like their metal prints worth the price? Find out in this Mpix metal print review!

Apr 03, 2020