Why white?

White with a red sun (in this case a red stripe) are the Japanese racing colours

e.g. GB - BRG, Italy - Red, Germany - Silver, France - blue...etc

cosworth wrote in post #3455971
Read a magazine once in a while and you'll see the ad.

Is it really necessary to make offensive and condescending comments like this?

Roy Mathers wrote in post #3456106
Is it really necessary to make offensive and condescending comments like this?

You read it in a negative way. Read it aloud to yourself without adding contempt to the inflection and you'll see it can be taken both ways.

Sometimes people really are trying to be helpful.

Read it this way if it's clearer:

Read a magazine, once in a while you'll see the ad.

I really don't see how I can read it aloud to myself! Anyway, I did read it again, and it reads the same to me - 'Read a magazine once in a while' surely implies that I don't?

Cosworth is a smartass, thats one of the unique characteristics that seperate him from others.

He totally meant it the way it sounded.lol.jk:p

I read it the way Roy did, but I didnt take it the same way, I like smartasses. makes the world interesting.

ACTUALLY the lens is not white its "putty"
But yes its there to reduce heat that the lens would encounter. And one of the best marketing ploys....look....isnt Sony trying to do the same thing?

Silly Sony jumping on a coat-tail

Eat an apple once in a while and you'll bite a worm.

Same grammar, but you read it different.

^^^ ROFLMAO

Smartass, or just ass?

Mum2J&M wrote in post #3456629
Smartass, or just ass?

Smartass.....his quips have some thought put into them

Roy Mathers wrote in post #3455881
But why only in the longer focal lengths?

Chances are, you'd probably use a zoom lens outdoors and the exposure of these lenses to the sun regularly is more than that of a smaller lens. Just my 0.02.

I thought Cosworth tidbit on the magazine thing was interesting and not at all negative. I'll probably skim though some magazines at the magazine rack to find the ad next time.

one of the reasons definitly has to be marketing. Did anyone see the press boxes at the last olympics? A sea of white lenses!

You gotta watch out for that dasterdly comma.

cosworth wrote in post #3456154
You read it in a negative way. Read it aloud to yourself without adding contempt to the inflection and you'll see it can be taken both ways.

Sometimes people really are trying to be helpful.

Read it this way if it's clearer:

Read a magazine, once in a while you'll see the ad.

The thermal expansion really is important to consider.

From the manual of the 100-400: "To compensate for the shifting of infinity focus point that results from changes in temperature. The infinity position at normal temperature is the point at which the vertical line of the L mark is aligned with the distance indicator on the distance scale."

cosworth wrote in post #3456569
.

Same grammar, but you read it different.

Talking of grammar, it should be 'you read it differently'.