vignetting from mamiya 6

the more I shoot with my mamiya 6 the more I find myself getting tired of the vignetting I get from all 3 lenses. Is it me, do others get it or is it just my stuff? i attached an example that is obvious because of the sky.

thoughts?

john

It's in the sky but less evident in the foreground, don't you think? Are you using filters?

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Gunfleet said:

It's in the sky but less evident in the foreground, don't you think? Are you using filters?

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yes. This shot used an orange filter

You are seeing the normal 1/cos4(theta) drop off where theta is the angle off the center lens axis. Since the light is coming through the filter off the perpendicular is is more noticeable than without the filter.

many lenses vignette more with a large lens opening, especially wide-angle. That may be part of your issue, but I'm actually surprised these lenses are doing that so much. I've heard nothing but good about the mamiya 6.

I saw these comments on light falloff w/ the Mamiya lenses, so it's not just happening to you

Dead Link Removed

https://www.flickr.com/groups/45967112@N00/discuss/72157607150467159/

http://photo.net/medium-format-photography-forum/00PtMP

Usually, this can be mitigated by stopping the lens all the way down, possibly taking the filter off, and making sure that you have a good hood on the camera. What you're seeing on the pic that you posted would aggravate me too. If stopping down doesn't fix it, you'll have to keep this "feature" in mind when you compose your shots and crop, or switch to another camera. I suspect the less wider lenses will give less light falloff, but you'd have to ck that. Sometimes it's necessary to use a step up ring and use larger diameter filters, but try it w/ no filter and f16 first and see what you get.

I looked at landscape shots from Rolleiflex and Rolleicord camera that I've owned and didn't see any of this effect, and my Brillant and Bessa RF w/ Heliar lenses didn't exhibit falloff either, so there are cameras that don't have this issue. Very nice shot, otherwise. If it were me, I would crop it to a pano to save it.

destroya said:

yes. This shot used an orange filter

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Two thoughts.

1- I don't see any vignetting. Lens related vignetting is centered and darkens all four corners, that is not evident in your example.

2- The sky looking progressively darker as you look up is the way the sky normally looks in real life, lighter blue close to earth, darker blue up higher. The orange filter multiplies that effect pushing blues even darker on B&W film, red pushes it further toward black and yellow will back it off some from orange. Using no filter will tone the sky down even more. A blue filter will push that deep blue sky in the scene toward white on B&W film, the darker the blue filter the whiter the result.

Just burn the center a little if it bothers you.

it does not really bother me, I just never see it, what I guess I'm referring to vignetting, on any of my other cameras or lenses, just the mamiya. I can look at it as just less corner burning when i enlarge some of them.

momus, thanks for the links. looks like im not the only one. Im not complaining. the mamiya 6 system is awesome. I love the results. I was just wondering why it hits this system and none of my others. I have a roll shot at the same scene, the same tripod location, that I have to develop with the same film and same filter, just 35mm not 120, so I will see if Marks comments happen on that roll as well.

john