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Author Topic: GX617 center filter issue  (Read 1404 times)


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GX617 center filter issue
« on: February 15, 2011, 04:23:33 PM »

I just bought a used GX617 and while I was looking at the camera, I noticed that the 105mm lens has a 90mm center spot filter on it.  Does anyone know what the results of this might be before I go waste a bunch of money on film? Thanks. 

If anyone has a 105mm center spot filter (77mm diameter) I'll gladly buy it off you.


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Re: GX617 center filter issue
« Reply #1 on: February 17, 2011, 12:47:52 AM »

Actually you may have to 'waste' a roll of film because the only way to know if the 90mm center filter is appropriate for the 105mm lens is by testing it...  In practice, it's not waste.  It's testing, something that's inevitable with photography.  Film is simply the cost of testing film cameras.

Center filters compensate for light fall off on wide angle lenses.  The 90 is optimized for the 90mm lens. However, it may very well work for the 105 just as well.  In fact, I don't know if there is a 105mm center filter.  There may, there may not.  I had the 90mm lens, and the center filter is indispensable with it.  I did not have the 105mm lens so I can't comment on that.

Center filters are quite expensive.  New, the Fuji ones were around $300.  So if the 90 works on the 105, you'll save some money.
Alain Briot
Author of Mastering Landscape Photography, Mastering Composition, Creativity and Personal Style., Marketing Fine Art Photography and How Photographs are Sold.
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