D4 Sensor spot

Started Jul 24, 2013 | Questions
Mike Chen
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D4 Sensor spot
Jul 24, 2013

Is it possible to have a dust particle in-between the sensor and the ir filter ?

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Nikon D4
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eNo
eNo
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Re: D4 Sensor spot
In reply to Mike Chen, Jul 24, 2013

Possible but unlikely.
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snellius
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Re: D4 Sensor spot
In reply to Mike Chen, Jul 24, 2013

Do you have a problem or is it curiosity?

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Mike Chen
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Re: D4 Sensor spot
In reply to snellius, Jul 24, 2013

YES I do have a spot that will not go away

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reginalddwight
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Re: D4 Sensor spot
In reply to Mike Chen, Jul 24, 2013

This cannot possibly be true. I heard that only D600 bodies had dusty sensors.

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romfordbluenose
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Re: D4 Sensor spot
In reply to Mike Chen, Jul 24, 2013

Very very unlikely as the combination is made in a clean environment. I had a spot on a D300 filter that just wouldn't go away whatever I did eventually I ignored it.

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Oscar Rico
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Re: D4 Sensor spot
In reply to Mike Chen, Jul 24, 2013

Mike: Maybe an old dry oil spot, try to remove it with Smear Cleaning solution and finish it with Eclipse solution. Regards: Oscar

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Mike Chen
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Re: D4 Sensor spot
In reply to Oscar Rico, Jul 24, 2013

I tried that cleaned more time than I should it is not moving

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Mike Chen
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Re: D4 Sensor spot
In reply to romfordbluenose, Jul 24, 2013

I have a D300 never seen this on its sensor

but D4 Hmm, the tech at the Nikon AUTH. repair service said it could happen

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Oscar Rico
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Re: D4 Sensor spot
In reply to Mike Chen, Jul 24, 2013

Mike Chen wrote:

I have a D300 never seen this on its sensor

but D4 Hmm, the tech at the Nikon AUTH. repair service said it could happen

Then that is your answer.

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mikemsphoto
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Re: D4 Sensor spot
In reply to Mike Chen, Jul 25, 2013

Mike Chen wrote:

I tried that cleaned more time than I should it is not moving

I suppose one option for a dust spot that you can't get at would be to use the "Dust Off reference photo" feature. (on page 346 of your manual.) I've never actually used it but has been on Nikon bodies at least since the D2x. It lets Capture NX2 know where the spot is on all your shots and it automatically gets cloned out during raw processing. Must admit that I've never actually tried it though.

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Ferguson
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Re: D4 Sensor spot
In reply to Mike Chen, Jul 25, 2013

It's actually quite easy to tell if it's on the sensor (under the AA filter) or on the top of the AA filter.

A spot on the AA filter seen against an unfocused bright background (e.g. sky) will appear at high (small) apertures, and (mostly) vanish wide open as the light will some in from all around it.

A spot on the sensor itself as opposed to on top of the AA filter will always be present, as there's very little (if any) space between it and the photosite.

So shoot against an unfocused bright background at F16, and at F2.8 (or whatever is wide open), and if it's almost the same, it's on the sensor -- if at F2.8 it mostly disappears it's a normal spot on the AA filter.

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Mike Chen
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Re: D4 Sensor spot
In reply to mikemsphoto, Jul 25, 2013

I know of the dust reference feature in Capture NX

it would not help in any other software

however I use Lightroom and Aperture (sometimes)

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Mike Chen
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Re: D4 Sensor spot
In reply to Ferguson, Jul 25, 2013

I have cleaned more times than I can recall

all other spots are moved except this one

so I can only think that this is on the sensor itself

so it is off to the nikon repair service centre

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