D4 Sensor spot

Started Jul 24, 2013 | Questions
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Mike Chen Forum Member • Posts: 69
D4 Sensor spot

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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Nikon D4
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eNo
eNo Forum Pro • Posts: 11,744
Re: D4 Sensor spot

Possible but unlikely.
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snellius Contributing Member • Posts: 612
Re: D4 Sensor spot

Do you have a problem or is it curiosity?

Mike Chen OP Forum Member • Posts: 69
Re: D4 Sensor spot

YES I do have a spot that will not go away

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reginalddwight Senior Member • Posts: 2,003
Re: D4 Sensor spot
3

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

romfordbluenose Senior Member • Posts: 2,154
Re: D4 Sensor spot

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
Oscar Rico Senior Member • Posts: 2,249
Re: D4 Sensor spot

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

Mike Chen OP Forum Member • Posts: 69
Re: D4 Sensor spot

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

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Mike Chen OP Forum Member • Posts: 69
Re: D4 Sensor spot

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
Oscar Rico Senior Member • Posts: 2,249
Re: D4 Sensor spot

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.

mikemsphoto Senior Member • Posts: 1,548
Re: D4 Sensor spot

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
Ferguson Contributing Member • Posts: 816
Re: D4 Sensor spot
1

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 OP Forum Member • Posts: 69
Re: D4 Sensor spot

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 OP Forum Member • Posts: 69
Re: D4 Sensor spot

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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