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There go all my filters

Does anyone have experience with the Lee P105 Lens Hood for 4 inch filters? Will it work with a 300mm f5.6 lens, or does it vignette?
 
PhotoSmith said:
Does anyone have experience with the Lee P105 Lens Hood for 4 inch filters? Will it work with a 300mm f5.6 lens, or does it vignette?
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Which lens? My Fuji takes either 82mm or 77mm filters [I forget] so 4x4 is quite a bit bigger.

On the hood isn't format going to matter? On 8x10 that's a normal lenses. On 4x5 it's a long. On 11x14 it's a wide. Three different hoods needed :rolleyes: No?
 
I generally try to limit the filter size of my lenses. For my round filters I use either B + W or Heliopan with 1 exception. I now use a Singh-Ray LB (lighter brighter) Circular Warm Polarizing (a round filter) made of glass. For my Rectangular and Square filters (most graduated ND or color and one glass) filters I use either Singh-Ray or Lee.

Rich
 

Sorry, I should have been more specific. Dan was asking about a 300mm f5.6 Rodenstock Lens (in a Copal 3 Shutter I presume) for the 5"x7" format.

I would be interested to see if the Lee P105 lens hood, with slots for Lee 4x4 filters, will work on this lens for the 5x7 format. Additionally, will it work on the 8x10 format?

Thanks.
 
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Yes because the angle of view. The lens hood has to be larger than the angle of view but not too larger. But the normal lens on the 4x5, 8x10, and the 11x14 cameras would be the same hood but all different lenses.
 
freygr said:
Yes because the angle of view. The lens hood has to be larger than the angle of view but not too larger. But the normal lens on the 4x5, 8x10, and the 11x14 cameras would be the same hood but all different lenses.
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I was thinking about my last reply regarding the camera format size and vignetting. It seems to me that it shouldn't matter. If you put a 300mm lens on a 4x5, 5x7, or 8x10, the angle of view of the lens is the same so if the shade works on one, it should work for all.

The format of film that can be used with a lens should be dictated by the image circle that is produced behind the lens. If the lens has coverage for 8x10, it could still be used by all smaller formats. Regardless if the 300mm on 8x10 equals an equivalent 45mm on a 35mm camera, or a 65mm on 5x7, or 90mm on 4x5.

Therefore if the lens shade does not vignette on a 4x5, it will not vignette on an 8x10 with the same lens.

Is my reasoning correct?
 
Dan, I was at the camera store and I checked out the Lee behind the lens filter holder. It is pretty slick. It is held onto the rear lens barrel by a heavy duty rubber band. This way it should work on all of your lenses. The holder snaps gel filters inside it, or it looks like you might be able to clip resin filters over the back of it if you have this type of filter.

Filtering inside the camera reduces the chances of flare. As to whether it will work on your field camera, it will depend on the size of your lens board. As long as it makes it into the camera through the front and doesn't drag on the bellows, it should work fine.

It may be a problem with really wide lenses due to the short bellows draw though.

The best part is it only costs $20.
 
A hood that would work with a 10x8 would also work with any other format but with a smaller format you can afford some reduction in image circle so a longer hood could be used.
 
monochromatic51 said:
A hood that would work with a 10x8 would also work with any other format but with a smaller format you can afford some reduction in image circle so a longer hood could be used.
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Makes perfect sense. Thanks.
 
I have a 360mm lens on my 8x10. It also has an 86mm thread on the front element. But the rear elemen has a 72mm thread. So I got filters that size and screw them onto the rear rather thanthe front.
 

NO, as the field of view on a 4 by 5 with a 200mm lens (width) 35 degrees but the same lens on a 8 by 10 camera the field of view is 64.8 degrees. Calculator at link: http://www.mat.uc.pt/~rps/photos/angles.html

By these angles you would get vignetting due to the lens hood. But a normal lens on any camera has about the same angle of view, so as long and the mount for the hood is the same it can be used with almost any normal lens.
 
Thanks for the correction. In practice this makes perfect sense. It is always good to learn something new.
 
For the most part I agree with the step down bit but some of these lenses take HUGE filters. Anything over 82mm starts getting so expensive it doesn't make sense to build a general set of filters and then use step down rings. If you're smaller lenses use common 67mm,58mm or 49mm filters you can build a whole set of filters for the cost of one 105mm filters. Or pretty close to it.
 
Robert Oliver said:
I read somewhere that there was a slight focus shift using glass filters behind the rear element even though I didn't notice it. . . .
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There is a focus shift, depending on the thickness and the index of refraction of the filter. If focusing is done with the filter attached, the shift is automatically compensated for.
 
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