Losing faith in my local camera store
Sep 16, 2018 08:32:02 #
I consider a joke the Nikon so called self cleaning sensor. In my case, it has never done the job right for me. Bring Olympus into this scenario with its self cleaning mechanism and I have NEVER had to clean the sensor in any of my Olympus bodies.
The person who "cleaned" the sensor of your D7100 did not do the right job.
The person who "cleaned" the sensor of your D7100 did not do the right job.
Sep 16, 2018 10:00:06 #
mizzee
Loc: Boston,Ma
Why not take it back to them and wait for a different guy? They should do it for free, but the longer you wait, the less likely they’ll do it for free. Good luck!
Sep 16, 2018 10:48:28 #
FlyGuy47 wrote:
Noticed in checking some recent images from my Nik... (show quote)
http://www.cleaningdigitalcameras.com
http://www.photosol.com
Sep 16, 2018 10:52:29 #
Strodav
Loc: Houston, Tx
rgrenaderphoto wrote:
Try this: Take the lens off and shoot a blank white wall. Then invert the image to negative, increase contrast and see if the spots are still there.
Sep 16, 2018 11:06:42 #
nanaval wrote:
I always clean my sensor myself with no problems and use an Artic Butterfly...
Sep 16, 2018 11:23:08 #
EZsh00ter wrote:
If the spots are only showing up at smaller apertures, then its your lens that has dust in it. Try another lens. If it was from your sensor, the spots would show up at any aperture. Take your lens, hold the aperture open with the little lever on the back of it and look through it directly at a light. Your specs should reveal themselves.
Cheers,
Eric
Cheers,
Eric
That’s not how it works.
Dust in the lens very rarely shows up as dark spots because it’s not focused at that point.
If it affects the image at all, it might show up as a lighter translucent area or just a general loss of contrast.
Dust does not sit ON the sensor.
It’s a bit in front on a protective filter pack, even if there is no anti-aliasing filter.
At wider apertures, the light falling on the dust and the edge of the resulting shadow is softer.
At smaller apertures, that shadow’s edge is sharper and shows more easily in the image because the light is coming more straight in from a smaller point.
That’s why every tutorial on cleaning a sensor says to stop the aperture down to check for dust.
Just like using a softbox or umbrella to light your subject vs a small flash head, bigger is softer.
More about why dust is more visible at smaller apertures HERE.
I shoot at wider apertures most of the time, but when I need more depth of field, closing down shows me how dirty my sensor really is.
I clean my own when it needs it.
Sep 16, 2018 13:28:19 #
EZsh00ter wrote:
If the spots are only showing up at smaller apertures, then its your lens that has dust in it. Try another lens. If it was from your sensor, the spots would show up at any aperture. Take your lens, hold the aperture open with the little lever on the back of it and look through it directly at a light. Your specs should reveal themselves.
Cheers,
Eric
Cheers,
Eric
Dust on the sensor would show up much clearer at small aperture and that's why when checking for sensor dust you should use f/22 or so.
Sep 16, 2018 16:06:50 #
rgrenaderphoto wrote:
Try this: Take the lens off and shoot a blank white wall.
Then invert the image to negative, increase contrast and
see if the spots are still there.
Try this: Take the lens off and shoot a blank white wall.
Then invert the image to negative, increase contrast and
see if the spots are still there.
Tht approach will MASK/HIDE spots caused by
three-dimensional particles [the usual culprits].
Harsh direction light, from a small source will
emphasize dust. At least the OP already knew
this as evidenced by his test procedure. So it's
not helpful to describe to him a testing method
that provides a broad, diffused, nondirectional
light source.
`
Sep 24, 2018 16:24:04 #
rcarol wrote:
The issue is with his D7100, not his D850.
There is no aa filter on the 7100 either.
Sep 24, 2018 17:38:48 #
Try this:
https://www.nikonimgsupport.com/na/NSG_article?articleNo=000025778&configured=1&lang=en_SG
--
https://www.nikonimgsupport.com/na/NSG_article?articleNo=000025778&configured=1&lang=en_SG
--
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.