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  1. #1
    Senior Member
    pnomanikon's Avatar

    Condensation question

    I purchased a new D7200 2 years ago and love it. I didn't get to use it much the first year as I was taking care of my mother before she passed.

    Last summer, I was on the road in Indiana and stayed overnight in a B&B. The owner had the A/C cranked up and it was cold in the house. It felt good, though, compared to the 90 degrees (F) and high humidity. I brought my insulated camera case inside but did not open it.

    The next morning, I was on the road early. It was another hot and humid day. As the sun was coming up, I came across a nice shot of a farm and barn. When I got the camera out, it still had the 55x300 lens on it. I popped it off to switch with the 18x140 for wider angle. When I raised the camera up to shoot, I noticed everything was fogged up. Duhhhh.... I didn't think about condensation in the summer. I left the lens off and got back in the car with A/C until things dried off.

    HERE'S THE QUESTION: (Finally) Since I had the camera open to switch lenses, could the condensation have damaged the sensor? The reason I ask is, now that I have time to use the camera more, I'm finding focus is not nearly as clear as I thought. I use the VR when hand-held, and try to shoot with a reasonably fast shutter, but then I view the photos on the computer at 100%, the details are fuzzy.

    Suggestions?

    Thanks for your help with this.

    .


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    Pianist/Organist
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    www.MichaelElyard.com

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  2. #2
    Senior Member

    Re: Condensation question

    Is it fuzzy with both lenses?
    D810; D7200; AF-S 14-24mm f/2.8G ED; AF-S 24-120mm f/4G ED VR; Sigma 120-300mm f/2.8 Sport; Sigma 2X Teleconverter;
    AF-S 50mm f/1.8G; AF-S 85mm f/1.8G - Old non-AF; 105mm f/2.5; 28mm f/2.8 - Godox V860II & AD200

  3. #3
    Senior Member
    Bengan's Avatar

    Re: Condensation question

    First of all, don't panic. I dont think that any damage was done to the sensor.

    I suppose that the focus was good before the incident...? Yes/no?

    Are the photos taken with viewfinder AF or live view?

    If photos were sharp before with booth/all lenses and you're using the viewfinder, then there may hav been contamination/dirt on the autofocus sub-mirror or autofocus prism.
    Depending on your answers ther may also be a question of AF fine tuning.
    Bengt - D810; D7200
    Tamron 24-70/2.8 G2; Sigma 14-24/2.8
    Sigma 150-600 C; Sigma 105/2.8 Macro
    Pentax K-1, K-3, Spotmatic, ME, K-2; Rolleiflex

  4. #4
    Senior Member
    pnomanikon's Avatar

    Re: Condensation question

    Quote Originally Posted by Andy W View Post
    Is it fuzzy with both lenses?
    Yes. Neither has the detail I was expecting. By that, I mean when I view at 100% on the computer screen.
    Pianist/Organist
    MSgt, US Air Force (Retired)

    www.MichaelElyard.com

    www.RidingWV.com

  5. #5
    Senior Member
    pnomanikon's Avatar

    Re: Condensation question

    Quote Originally Posted by Bengan View Post
    First of all, don't panic. I dont think that any damage was done to the sensor.

    I suppose that the focus was good before the incident...? Yes/no?

    Are the photos taken with viewfinder AF or live view?

    If photos were sharp before with booth/all lenses and you're using the viewfinder, then there may hav been contamination/dirt on the autofocus sub-mirror or autofocus prism.
    Depending on your answers ther may also be a question of AF fine tuning.
    I didn't really take too many photos before then - busy with mom.

    I use viewfinder, not the live view.

    I did read about focus fine tuning by taking a photo at an angle of a newspaper on the floor, marking the focus point and then analyzing the photo.

    Thank you.
    Pianist/Organist
    MSgt, US Air Force (Retired)

    www.MichaelElyard.com

    www.RidingWV.com

  6. #6
    Senior Member
    FredKingston's Avatar

    Re: Condensation question

    You may want to have the camera looked at by a good shop... Condensation certainly won't harm the sensor... one method of cleaning is a wet method/process...

    However... if heavy condensation is not dried properly...it can leave water spots and dust on the sensor, focus screen, and the interiors of the lens and camera's focus mechanisms... that could potentially create some issues...

  7. #7
    Senior Member
    pnomanikon's Avatar

    Re: Condensation question

    Quote Originally Posted by FredKingston View Post
    You may want to have the camera looked at by a good shop... Condensation certainly won't harm the sensor... one method of cleaning is a wet method/process...

    However... if heavy condensation is not dried properly...it can leave water spots and dust on the sensor, focus screen, and the interiors of the lens and camera's focus mechanisms... that could potentially create some issues...
    That's what I'm afraid of. The condensation did dry off in about a minute once I was back in the car with A/C.

    I will try the "focus tuning" this week and get back with the results. The nearest "good shop" is 100 miles away in Pittsburgh.

    Fingers crossed. Thanks.

    .
    Pianist/Organist
    MSgt, US Air Force (Retired)

    www.MichaelElyard.com

    www.RidingWV.com

  8. #8
    Senior Member

    Re: Condensation question

    I get the fog a lot in the summer going from the a/c to outdoors on some of those 90% humidity days. I never had a problem beyond waiting for the fog to clear. I would say with your 18-140, take a shot outdoors in great light at a good shutter speed, iso 100 and f8. Use single point focus. Also back the zoom down to about 100mm. Lenses in general can be less sharp at full zoom and wide open aperture.
    As far as focus tuning, just do a very preliminary test. Take a shot of a fence or the side of a building at a 45 degree angle. Use single point focus and your widest aperture. Even a shot of the ground is fine. Something should be in focus, either exactly at your focus point or just in front or behind. If its not sharpest at the focus point, then maybe you need to tune. In any case, something should be sharp proving your sensor is fine. It may not be as sharp as at f8 and 100mm though.
    Thanks/Like pnomanikon Thanks/liked this post
     
    I must have a really good camera.

  9. #9
    Senior Member
    pnomanikon's Avatar

    Re: Condensation question

    Quote Originally Posted by nickt View Post
    I get the fog a lot in the summer going from the a/c to outdoors on some of those 90% humidity days. I never had a problem beyond waiting for the fog to clear. I would say with your 18-140, take a shot outdoors in great light at a good shutter speed, iso 100 and f8. Use single point focus. Also back the zoom down to about 100mm. Lenses in general can be less sharp at full zoom and wide open aperture.
    As far as focus tuning, just do a very preliminary test. Take a shot of a fence or the side of a building at a 45 degree angle. Use single point focus and your widest aperture. Even a shot of the ground is fine. Something should be in focus, either exactly at your focus point or just in front or behind. If its not sharpest at the focus point, then maybe you need to tune. In any case, something should be sharp proving your sensor is fine. It may not be as sharp as at f8 and 100mm though.
    Thank you. Yes, I forgot to mention I use single point focus and usually Aperture Priority. We have a chain link fence around our veggie garden, so that may be a good focus subject. I'll try that and a newspaper print page.
    Thanks/Like nickt Thanks/liked this post
     
    Pianist/Organist
    MSgt, US Air Force (Retired)

    www.MichaelElyard.com

    www.RidingWV.com

  10. #10
    Senior Member
    Bengan's Avatar
    Thanks/Like pnomanikon Thanks/liked this post
     
    Bengt - D810; D7200
    Tamron 24-70/2.8 G2; Sigma 14-24/2.8
    Sigma 150-600 C; Sigma 105/2.8 Macro
    Pentax K-1, K-3, Spotmatic, ME, K-2; Rolleiflex





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