F90X - how to clean AF sensor
recently I've purchased F90X body. Quite satisfied with it - except the AF can be fuzzy and can hunt and hunt and hunt and fail at the end.
As it was my first (vintage) SLR body - the first thought was - maybe that's just the way it is.
But a week ago I've had a chance to compares it with another F90X. Same batteries, same lens(es), same motiv - a very non-contrast macadam surface.
Mine - maybe 5-10% accurate and in rest 90-95% cases was hunting and hunting and hunting and at the end when "locked" the focus point was totaly out of focus.
The other F90X body - almost 100% dead spot on accurate and fast. Same as my D2X or D300s on same motiv.
OK, otherwise for e.g. portraits mine F90W works quite well. Sometimes you need to re-halfpress shutter button several times to get right focus ...
But nevertheless - now I see it's not "a general F90X body problem" but my particular body problem - so I guess the AF sensor might be dirty. I have no fear and problem to clean it. BUT - where is it? Under mirror? And in this case - due to non mirror lock function - how to get to it? Using 30sec exposure time?
thanks in advance
#1. "RE: F90X - how to clean AF sensor" | In response to Reply # 0avm247 Charter MemberTue 30-Aug-11 03:14 PM
Primo, I think the AF sensor in located up in the prism and is really not really able to be cleaned. I suggest having a Nikon repair shop check the AF focus.
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#2. "RE: F90X - how to clean AF sensor" | In response to Reply # 1PrimozS Registered since 09th Aug 2011Wed 31-Aug-11 06:19 AM
I've read somewhere (I just can not remember where) that the AF senzors are located behind/under the mirror. So if that's the case - I just need to shoot the film first - so I can lift the mirror with 30sec exposure time ...
Unfortunately the costs for taking F90X to service would be too high ... Body as is is worth cca 50-60Eur and the price for "basic" service cleaning is in same range ... My brother bought MINT and cleaned F90X body at 2nd hand store for 70Eur.