ira_lippke Posted March 5, 2003 Share Posted March 5, 2003 I've been using a Fuji GW690III for a while and I'm getting a subtle vignetting around the edges of my images. The center is around a stop or so lighter than the outside edges. I'm pretty sure it's not a filter issue - I usually only use a B+W skylight filter. Has anyone else noticed this. It can be corrected in the printing, but I'd like to get a graduated Neutral Density center Filter to correct this. Does anyone have any recommendations? Link to comment Share on other sites More sharing options...
rich815 Posted March 6, 2003 Share Posted March 6, 2003 I've never had this in about 5 years of shooting my GW690III. But then again I rarely if ever shoot it wide open. Does this happen for you across all aperatures? Mostly when using a polarizer? Does it happen all the time? Link to comment Share on other sites More sharing options...
stephen hazelton Posted March 6, 2003 Share Posted March 6, 2003 It sounds like light falloff, not vignetting? That is, it's just darker at edge, but not black? Link to comment Share on other sites More sharing options...
ira_lippke Posted March 6, 2003 Author Share Posted March 6, 2003 The image is not black around the edges- just darker- so I guess it would be "light fall off" rather than vignetting. I just put a shot up in my portfolio so you can see it. I usually shoot at a mid or high f stop (5.6-16) no polarizer filter. Is this just my particular camera? Has any other Fuji gw690II users seen this? Do you think a center ND filter would help? If so, I wonder which would be the best... Link to comment Share on other sites More sharing options...
b_g2 Posted March 6, 2003 Share Posted March 6, 2003 Mine has the same light fall off. Since I scan all my images, this is not a problem. Sorry, I don't know where to buy the filter, but you might try Tiffen on the Web. Link to comment Share on other sites More sharing options...
bob_salomon Posted March 8, 2003 Share Posted March 8, 2003 Heliopan supplies graduated center filters. Tiffen does not. Link to comment Share on other sites More sharing options...
gyuri Posted April 25, 2003 Share Posted April 25, 2003 Ira, I have noticed this light fall-off with my GW690III, when I shot longer night exposures than 30 seconds and/or wide open. Now I shoot around f16. Some examples can be found here: http://forum.fotoklikk.hu/modules.php?set_albumName=album07&op=modload&name=gallery&file=index&include=view_album.php I think this is a normal light fall off, what is caused by the film reciprocity (Schwarzshild), plus the lens light fall off together. I never tried the center filter, but I was thinking on it. Once I tried out the Cosina 77mm center filter (made to the Cosina 19-35 zoom) with a 67-77mm filter ring converter, but I have not really notice any difference. So I finnaly have not purchase one. Regards:Gyuri Link to comment Share on other sites More sharing options...
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