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Thread: Just wondering, what happens if....

  1. #1
    Member wlhoh76's Avatar
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    Default Just wondering, what happens if....

    ....if your lens fogged out when example, you just brought in your camera from outdoor (hot) to indoor (air conditioned), how to handle this situation.

    Also what are the things to look out for if we are going to a cold climate country such as Japan. Frankly speaking, I do not know how to deal with condensation (right word to use?) issues. Any advice?
    |Canon EOS 500D|17-55mm f2.8|50mm f1.8 II|18-55mm|55-250mm|430EXII|190XPROB|488RC2|

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    Senior Member Kit's Avatar
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    Default Re: Just wondering, what happens if....

    Quote Originally Posted by wlhoh76 View Post
    ....if your lens fogged out when example, you just brought in your camera from outdoor (hot) to indoor (air conditioned), how to handle this situation.

    Also what are the things to look out for if we are going to a cold climate country such as Japan. Frankly speaking, I do not know how to deal with condensation (right word to use?) issues. Any advice?
    Condensation only happens on the "hot" side.

    There is no need to deal with it, just wait for about 10 mins and it will be gone.

  3. #3
    Moderator daredevil123's Avatar
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    Default Re: Just wondering, what happens if....

    Bring a large ziploc bag with you when you travel. Before you go from a cold environment into a warm one, place your camera in the ziploc bag and seal it. Then enter. The condensation will happen on the outside of the bag. After 10-20mins when your camera's temperature is stabilized, you can take the camera out.

    Nothing needs to be done when going from a warm place to a cold one.

    If the temperature differences are not that great, it is fine. I used the ziploc technique for one of my recent trips, just because the indoor temperature is around 15 deg C and the outdoor temp is -20 deg C.
    Last edited by daredevil123; 24th April 2010 at 11:28 AM.

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    Member wlhoh76's Avatar
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    Default Re: Just wondering, what happens if....

    Folks, Thk you for the advice....much appreciated. I will bear this in mind when I go travelling.

    Cheers!
    |Canon EOS 500D|17-55mm f2.8|50mm f1.8 II|18-55mm|55-250mm|430EXII|190XPROB|488RC2|

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    Senior Member Kit's Avatar
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    Default Re: Just wondering, what happens if....

    Quote Originally Posted by wlhoh76 View Post
    Folks, Thk you for the advice....much appreciated. I will bear this in mind when I go travelling.

    Cheers!
    You still don't seem to grasp the concept of condensation. It will not only happen when you travel overseas. Condensation will happen anywhere and Singapore is a perfect place for it to happen. A substantial differentiation in ambient temperature (usually more than 10 deg C) will make it happen. As such, condensation has lesser chance to take place in colder climate.

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    Moderator diver-hloc's Avatar
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    Default Re: Just wondering, what happens if....

    This happened to me in Cambodia, due to the aircon inside my room.... even when I took out and let it 'warm up' for well over 20-25mins.... took a ride to Angkor Wat, still the same problem. So in the end.... switch off the A/C inside my room, and just use the ceiling fan. Problem solved.

    TS.... I still remember my Science lesson from primary school.... an object must be cooler than the surrounding air for fogging to happens.... therefore - Cold to Warm....

    Scuba & Father... For Life

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    Member voxies09's Avatar
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    Default Re: Just wondering, what happens if....

    lol, dont you put it inside dry cabinet if you are inside in your room?

  8. #8
    Senior Member Kit's Avatar
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    Default Re: Just wondering, what happens if....

    Dry cabinets take care of humidity. Condensation happens with fluctuation temperature. What's your point?

  9. #9

    Default Re: Just wondering, what happens if....

    LOL, i think some people misunderstand that dry cabinet controls temperature as well.

  10. #10
    Member voxies09's Avatar
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    Default Re: Just wondering, what happens if....

    i tot the temperature in the dry cabinet is around 27C; and outside daylight around 32-33C..hence not more than 10C different? correct me if i am wrong.

    edit: lol i guess i didnt read the top post before click submit.. lol.. i am wrong

  11. #11

    Default Re: Just wondering, what happens if....

    Quote Originally Posted by Kit View Post
    You still don't seem to grasp the concept of condensation. It will not only happen when you travel overseas. Condensation will happen anywhere and Singapore is a perfect place for it to happen. A substantial differentiation in ambient temperature (usually more than 10 deg C) will make it happen. As such, condensation has lesser chance to take place in colder climate.
    kit is right. condensation can happen anywhere.

    but to be more accurate, it's not just substantial difference but when there is a change in surface temperature. a change in surface temperature can happen when your gear has been kept in an environment where the temperature is different from the outside temperature and allowed to reach that tempertature.

    so for example if you leave your gear in a room with the aircon on set at 20 degrees and you step out outside of the room with temp at 25 degrees you will get condensation. in this case, no matter how much you wipe your lens, condensation will still occur until the surface temperature reaches close to 25 degrees.

    there are a few ways to tackle this
    1. give ample time to thaw.
    2. when you are in an aircon room, keep your gear where it is not chilled. i will normally leave it in the toilet with the door closed.

  12. #12

    Default Re: Just wondering, what happens if....

    Never really care for me,
    just keep in in my backback.

    what's the symptom like, beside fogging ?
    i mean long term effects
    Last edited by redwine; 25th April 2010 at 04:54 AM.

  13. #13

    Default Re: Just wondering, what happens if....

    Condensation will usually occur when you are moving from a cold to warm place. When in a place of a colder climate(sub zero temperatures) and enter a building with a heater turned on, condensation will take place. The difference in ambient temperature is definitely more than 10 deg in this instance.

    Cheers

  14. #14
    New Member kriegsketten's Avatar
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    Default Re: Just wondering, what happens if....

    Quote Originally Posted by redwine View Post
    Never really care for me,
    just keep in in my backback.

    what's the symptom like, beside fogging ?
    i mean long term effects
    I'm going to assume that moisture is going to seep into areas you can't clean, probably leading to the dreaded fungus build up over time...

  15. #15
    Member wlhoh76's Avatar
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    Default Re: Just wondering, what happens if....

    Quote Originally Posted by Kit View Post
    You still don't seem to grasp the concept of condensation. It will not only happen when you travel overseas. Condensation will happen anywhere and Singapore is a perfect place for it to happen. A substantial differentiation in ambient temperature (usually more than 10 deg C) will make it happen. As such, condensation has lesser chance to take place in colder climate.
    Bro, thks for the clarification. Actually why I said that because I am picturing the scenario where I am in Hokkaido *(never been there yet) shooting pics out in the open and moving into indoors - hotels (cold to warm).

    So far *touch wood*, in Singapore still so far so good. I value your advice.
    |Canon EOS 500D|17-55mm f2.8|50mm f1.8 II|18-55mm|55-250mm|430EXII|190XPROB|488RC2|

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    Moderator Octarine's Avatar
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    Default Re: Just wondering, what happens if....

    Quote Originally Posted by voxies09 View Post
    i tot the temperature in the dry cabinet is around 27C; and outside daylight around 32-33C..hence not more than 10C different? correct me if i am wrong.
    The lower temperature reading comes from the cooling element used to get the humidity out of the dry cabinet. Simply: an electrical component (Peltier element) gets cold on one side when connected to electrical power. Condensation occurs and the water is removed from the cabinet. As a side effect the air inside is also cooled a bit.
    The temperature reading at the door is just an indicator, together with the Relative Humidity reading the total amount of humidity can be determined (if required). RH always depends on temperature.
    EOS

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