Strange image defect with M7ii+65mm

[tomw]

I keep finding this weird darkening on the left or right (never both) in pictures taken with my Mamiya 7ii and only using the 65mm lens. It's a slightly curved darkened area on each frame. I can not figure out why its happening, but it's driving me nuts. Any ideas appreciated. I suppose I really need to send it in for service (I use http://precisioncameraworks.com/), but thought if there was an easy explanation... I almost always use the hood, but can't think why the defect would switch sides if it was that.

Examples at Flickr :

http://flickr.com/photos/tom_westbrook/90854683/ (defect on the right)
http://flickr.com/photos/tom_westbrook/90470738/ (defect on the left)
http://flickr.com/photos/tom_westbrook/90470623/ (defect on the right)

There are plenty more to be found by looking through the M7 images here:

http://flickr.com/photos/tom_westbrook/search/tags:mamiya7

You can view bigger sized images by clicking on the All Sizes icon above each photo.

 

[jcm0]

Hi,

Did you check the neg to see if the defect is on the neg even on the unexposed part (top / bottom frame) ?

It may be due to the curve of the film, especially if there is a lot of time during two shoots. The mecanically curved film may generate over/under-development. I had the same problem with a thick film like TMY in a roll back. Your problem may depends on the film type and lab/revelator used.


Regards,

JCM

 

[jasonhupe]

Scanning Problem?

Scanning Problem?

It looks to me like a problem with the scanning. I had the same problem when scanning in my RZ negs on my Epson 4980. If the problem is not on the negs themselves than I think that is your culprit. Are the negs with the problems cut where they are having the problem. With my problem it was a neg that was cut and was on the edge of a strip so when placed in the film holder it would curl up and cause the discoloration just like you. Hope this is it, a lens problem would be no fun.

 

[tomw]

Looks like it was the scanner. I replaced the old Epson 2450 I was using with a 4990 after posting this and have not seen the artifact so far. I rescanned one of the images mentioned and the problem was gone. What a relief that it isn't on the film! I guess I didn't notice it before because with color neg film, it's hard to see subtle things like that.

Thanks for the help!