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Simple test to test my camera?


joonas_hyt_nen

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Hi. I just got a second-hand Nikon FA, and Ì`m beginning to have

suspicions with it`s condition. I use two lenses, 85mm AI-S 1:2.0 and

50mm AF 1:1.8. With both lenses I`m getting a bit weak results. Ì

can`t quite put my finger on it, but I find it exceedingly hard to

get sharp pictures.I was just making some B&W prints, and a landscape

picture which I took from a heavy tripod and with the mirror locked-

up with a high shutter speed 1/125, the picture still isn`t as sharp

as it should be. But with my F70 I can get sharp results with out

even thinking about it. So my question is; is there some kind of

basic test procedure that I can do to the FA? I don`t have the money

to take to repair. Thanks.

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Put the camera on your tripod and point it at a brightly lighted target such as a

newspaper. Open your lens to its largest opening. Open the back of the

camera and place a ground glass at the film plane. This "glass" can be any

frosted material that produces a visible image. Then lock up the mirror and get

a sharp image on the glass, using a magnifier to ensure that it's sharp. Now

lower the mirror and check the focus through the eyepiece. If it's not sharp,

adjust the lens till it is. Repeat this experiment with other lenses. The fact that

the mirror and the ground glass disagree means your camera needs work. It

may be that the mirror is out of alignment. Whatever the problem, I doubt you

can fix it yourself.

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Keith's diagnostics are right on, but I'd add one bit before you take it for repair: It's not terribly uncommon for the focus screen on this family of cameras to be not seated correctly.

<p>

Changing focus screens is a 'user' operation, and some users are better than others! Here's a web page showing how it's done:<br>

<a href="http://www.mir.com.my/rb/photography/hardwares/classics/nikonfeseries/fefmshared//html/screenchange.htm">

http://www.mir.com.my/rb/photography/hardwares/classics/nikonfeseries/fefmshared//html/screenchange.htm</a>

<p>

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