Special Lens Hoods for D30 & D60

[boBquincy]

I have a D30 and Canon's 24-85 & 70-200 f4 lenses. With the 1.6 'multiplier' these lenses are now about 38-135 and 112-320. The lens hoods probably no longer match the focal length, being quite a bit 'wider' than they need to be.
Do any of the Canon 100-300 hoods fit the 70-200 f4? How about a 35-135 hood for the 24-85?

thanks,

boB

[robertwgross]

Your lenses have not changed, and the lens hoods should not change. You are thinking about this all wrong.

The only thing that has changed is that the "film surface" (the sensor) only sees the middle of the normal image that the lenses produce, and the sensor discards the outer part of what would have been the normal image.

If you think about the optical path, you will agree.

---Bob Gross---

[kd6lor]

I have to agree with bob, - the "boB" Bob - lthough I have to ask myself why he spells his name boB? With the 1.6 factor it seems to me that the hoods can be tighter. If the second Bob could elaborate a bit more, maybe I could understand what he finds somewhat self-evident, since considering the optical path and all, I think the first post is self-evident.

Nice to chat with you, Bob and boB!

Paul

[robertwgross]

Sure, you can take off the standard hood for a given lens and put on another tighter hood for the same lens... but not by much. It would be far more trouble than it is worth. By cutting the hood size down ever so slightly, what have you gained? (a half ounce of plastic or metal?)

I'm sure that Canon will drop everything and go to work on this right away. :-)

---Bob Gross---

[Inactive Member 06]

Yes, I also think the first post is entirely correct. Lens hoods are designed to keep out as much stray light as possible, without restricting the field of view. That's why the hood is usually longer for longer focal length (narrow angle) lenses - the narrow field of view means that the hood can be longer without obstructing it.

Since the D60 has a narrower field of view for any given lens than a 35mm SLR, it should be able to use a tighter hood. It seems pretty obvious to me.

I've also thought it would be nice to have tighter hoods, but I haven' heard of Canon supplying any. Since the successor to the D60 is likely to have a full frame sensor anyway, I don't think that they'll bother.

[kd6lor]

Canon has essentially done the same things with their zoom head flashes. How hard would it have been to set the zoom head to reflect that angle of view of the sensor. i.e. the head lights up a 50mm pattern while the sensor only sees the effective FOV from a 80mm lens.

Reading my above words, I am not sure if I was clear. In other words, with the 50mm lens, the flash could be set for 80mm instead of 50. Is this lazyness on the part of Canon's software people, or simply an indication that less than full frame sensors are only a blip in the plan?

Paul

[boBquincy]

Although the lenses have not changed, the field of view has, by a factor of 1.6. My reasons for asking about other hoods are: to improve the stray light rejection; and to reduce the size (not a big issue, I will agree).

Of course I do not expect Canon to work on this but merely wondered if anyone in the group had tried other lens hoods on the lenses I mentioned. It seems some other Canon hoods should fit.


thanks for the replies,

boB
who spells his name 'backwards' just because. ;)

[kd6lor]

boB, thanks for the info RE the name. My daughter hannaH has the same issues with her name. I tried a lens hood for one lens on another that had the same filter size. It didn't seem to want to fit well. Maybe that Canon has it rigged so that they are indexed in such a way that only the hood designed for that lens will fit. God forbid you use one hood on more than one lens.

Paul