I wondered why the 40 could use the hood used by the 100 and 85 lenses
without vignetting. I have all three lenses and use the deep, narrow hood
regularly on the 40 with no problem.
--
Chris Crawford
Fine Art Photography
Fort Wayne, Indiana
260-747-5101
http://www.chriscrawfordphoto.com My portfolio
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On 5/30/09 5:07 PM, "Moose" <olymoose@xxxxxxxxx> wrote:
> C.H.Ling wrote:
>> No, it is almost exactly the same shape as the original 28-48 hood (I have
>> one).
>>
>> From: "Chuck Norcutt"
>>
>>> Doesn't the 35/2 hood vignette at 28mm?
>>>
> I think what you may be missing is that the geometry depends on the
> distance from the front node of the lens to the mounting point of the
> hood, not hood geometry alone.
>
> Thus one hood for 50/1.8/1.4, 35/2.8 and 35-70/3.5-4.5, one hood for
> 40mm/F2, 85mm/F2, 100mm/F2.8, one for 90mm/F2 and 135mm/F4.5, one for
> 21mm/F3.5 and 35mm/F2.8 Shift.
>
> Yup, 40mm and 100 mm lenses share the same hood. Obviously, the pancake
> design of the 40/2 puts the front node in the same place relative to the
> filter threads as the tele design of the 100/2.8
>
> Moose
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