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  1. #11
    Barry S's Avatar
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    Andrew--did you test your 45N-1 to confirm an issue with the focus? I haven't experienced any focus issues with my 45N-1, but I haven't done any specific testing.

  2. #12
    Jon Butler's Avatar
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    Andrew,
    I've seen your images their fine. My two Chamonix cameras are fine and I will not be doing any tests.
    If you test any LF camera you will find something wrong. I use my cameras in the same way including close ups and
    get the same sharp results as when I use my Ebony.
    I think some people prefer to test and fiddle about rather then taking pictures.
    JON.
    I prefer it in the dark.

  3. #13

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    I have not noticed any problems with my Chamonix. I suppose this might be a problem with close ups or with large apertures. However, when focusing on distant objects at a calculated hyperfocal distance for a given f stop, the thickness of the fresnel will actually make the farther distances sharper while pushing the nearest point of acceptable sharpness a little farther away, probably not enough to be a problem.

  4. #14
    Andrew Moxom's Avatar
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    I have noticed some issues shooting close up with a 203mm Ektar lens... It's very noticable softness. Also with my 90mm SA f8 on infinity shots... Seems soft compared to my shots done with a Canham DLC. Not done side by side shots though. Also, some of my petzval wide open shots, I have noticed some softness issues on the negs afterwards when I was certain nothing moved in the center where the sharpest area of the petzval lens signature resides. I was careful to focus, and the negs are not 100% what I would expect.
    Please check out my website www.amoxomphotography.com and APUG Portfolio .....

  5. #15
    Barry S's Avatar
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    It sounds like you definitely have an issue. I'm getting one of those full page fresnels for my 8x10 camera, so I'd do exactly what you suggest. Remove the Chamonix fresnel and cut down the Staples fresnel to fit behind the ground glass.

  6. #16
    wildbill's Avatar
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    well, viewing images online isn't an accurate method of gauging sharpness. Stopping a lens down isn't an acceptable solution in my book. If there is something wrong, fix it.
    since the cameras in question are made by hand out of wood, their could be variances from camera to camera. If your camera works fine, that doesn't mean mine will. Your "acceptable sharpness" may not meet andrew's standards.
    Andrew, I've use the staples brand magnifiers on my old shen hao and my 8x10 as well. They're great with short focal lengths. I've now removed the fresnel from my chamonix and will be installing the staples version. I'd recommend you do a test just for peace of mind. Test the depth of the film plane to the gg while you're at it.
    www.vinnywalsh.com

    I know what I want but I just don't know how to go about gettin' it.-Hendrix

  7. #17
    David A. Goldfarb's Avatar
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    A fresnel isn't really a necessity. Accurate focus is.
    flickr--http://www.flickr.com/photos/davidagoldfarb/
    Photography (not as up to date as the flickr site)--http://www.davidagoldfarb.com/photo
    Academic (Slavic and Comparative Literature)--http://www.davidagoldfarb.com

  8. #18
    wildbill's Avatar
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    Andrew, check Post #33 in the link below. Will has reattached his fresnel on the opposite side of the gg using paper clips. I'll try doing the same.
    http://www.largeformatphotography.in...t=49328&page=4
    www.vinnywalsh.com

    I know what I want but I just don't know how to go about gettin' it.-Hendrix

  9. #19
    keithwms's Avatar
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    Quote Originally Posted by David A. Goldfarb View Post
    A fresnel isn't really a necessity. Accurate focus is.
    My sentiments exactly.
    "Only dead fish follow the stream"

    [APUG Portfolio] [APUG Blog] [Website]

  10. #20
    Andrew Moxom's Avatar
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    Vinny, I might try that...... Or see how much it would cost to get the thing modified to work as it should!! I see Chamonix doing absolutely nothing about this. Unless they give people spare fresnels as they get scratched from being on the back in harms way!!! The fact is, they have a turd and want us to polish it! I hate to think what this will do for their resale value!!
    Please check out my website www.amoxomphotography.com and APUG Portfolio .....

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