What are these spots, Nikon D7100, Nikkor 105mm AI
May 14, 2018 13:08:50 #
trinhqthuan
Loc: gaithersburg
These spots 're seen on photos aiming the sky, all my lenses. Specially clear with small f stop (f/ 22...) don't see in large opening (f/2.5...)
f /22 ss 1/320 ISO auto 320
f/2.8 ss 1/8000 ISO auto 100
May 14, 2018 13:12:29 #
trinhqthuan wrote:
These spots 're seen on photos aiming the sky, all my lenses. Specially clear with small f stop (f/ 22...) don't see in large opening (f/2.5...)
Looks like you have dust on your sensor
May 14, 2018 13:13:02 #
mwsilvers
Loc: Central New Jersey
trinhqthuan wrote:
These spots 're seen on photos aiming the sky, all my lenses. Specially clear with small f stop (f/ 22...) don't see in large opening (f/2.5...)
Could be sensor dust, but post again at reasonably high resolution and select Store Original so we can have a better look.
May 14, 2018 13:23:11 #
trinhqthuan wrote:
These spots 're seen on photos aiming the sky, all my lenses. Specially clear with small f stop (f/ 22...) don't see in large opening (f/2.5...)
Without question these are sensor spots. The key is that you can see them stopped down, but not wide open. They are still there—they just aren’t detectable wide open. Which lens you use is, of course, irrelevant.
May 14, 2018 13:34:27 #
Sensor dust,I just cleaned my 7100 sensor with sensor swabs,it had dust all over it from a Sedona trip. If you clean it yourself be very careful the sensor is a very thin piece of glass,use light pressure. I did mine myself and it is crystal clear,the sensor is the heart of the camera if your not comfortable doing it yourself send it out to be cleaned. Jim Bianco
May 14, 2018 14:02:40 #
May 14, 2018 15:11:33 #
trinhqthuan
Loc: gaithersburg
mwsilvers wrote:
Could be sensor dust, but post again at reasonably high resolution and select Store Original so we can have a better look.
Thanks, will do it this evening. The RAW file is too big to go. I'll crop it down
May 14, 2018 16:24:03 #
mwsilvers
Loc: Central New Jersey
trinhqthuan wrote:
Thanks, will do it this evening. The RAW file is too big to go. I'll crop it down
As the others have said it's more than likely sensor dust. In my experience dirt on sensors doesn't move around that much so you should see the same spots in the same location in other photographs.
May 14, 2018 17:00:07 #
May 14, 2018 17:56:53 #
trinhqthuan wrote:
Thanks, will do it this evening. The RAW file is too big to go. I'll crop it down
No need.
As OddJobber says, this is classic sensor dust.
May 14, 2018 18:06:03 #
A blower will usually do that job. Get a filtered blower. I use the Koh Global Hepa Jet Air II blower. It has a large hepa filter, an anti-static filter, a one-way check valve, and a medical grade PVC bulb. Most blowers have a rubber bulb that can shed fine particles. The PVC bulb won't do that. Adorama Camera has it and you can also order it directly from Koh Global.
May 14, 2018 18:47:47 #
trinhqthuan
Loc: gaithersburg
CO wrote:
A blower will usually do that job. Get a filtered blower. I use the Koh Global Hepa Jet Air II blower. It has a large hepa filter, an anti-static filter, a one-way check valve, and a medical grade PVC bulb. Most blowers have a rubber bulb that can shed fine particles. The PVC bulb won't do that. Adorama Camera has it and you can also order it directly from Koh Global.
Thanks CO. Will do it.
TQT
May 15, 2018 07:25:13 #
billnikon
Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont
trinhqthuan wrote:
These spots 're seen on photos aiming the sky, all my lenses. Specially clear with small f stop (f/ 22...) don't see in large opening (f/2.5...)
UFO's
May 15, 2018 14:13:17 #
May 15, 2018 14:26:14 #
RichieC
Loc: Adirondacks
Point to something solid colored, you can be out of focus- in fact it's better. You'll see the same pattern of spots - in sharp focus. THis is your proof of what they are. You can clean it yourself... it is not a big deal, just get a hand blower, and a kit and a viewer, follow the directions to a tee... and look for a youtube video and watch a bunch of differnt videos of people doing this..just to get familiar with it.
....unless you are not handy, then pay someone to do it. However, in most all cases, you'll be more careful then the majority of people you find behind the desk.
....unless you are not handy, then pay someone to do it. However, in most all cases, you'll be more careful then the majority of people you find behind the desk.
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.