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How do I safety check that there is no light in Darkroom / Darkbag?


Can leaving a print in fixer too long cause damage/staining?What kind of darkroom fan will fit in a windowHow to make color darkroom prints?Why is a dark-room safelight safe?Can I develop black and white photo paper with T-Max developer?How can I avoid a yellowish hue in my darkroom print highlights?Light proofing a doorwayAre there consumer/prosumer-level digital-to-film or digital-to-photo-paper projectors/enlargers?How do I give a darkroom course without negatives from the attendees?How long do XTOL and D-76 last unmixed?






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3















Noon question, but:
How do I safety check that there is no light in Darkroom / Darkbag?










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    3















    Noon question, but:
    How do I safety check that there is no light in Darkroom / Darkbag?










    share|improve this question


























      3












      3








      3








      Noon question, but:
      How do I safety check that there is no light in Darkroom / Darkbag?










      share|improve this question














      Noon question, but:
      How do I safety check that there is no light in Darkroom / Darkbag?







      film developing darkroom






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 8 hours ago









      Andy AndyAndy Andy

      494 bronze badges




      494 bronze badges























          2 Answers
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          In the darkroom, place a piece of the material you will be developing, flat, face up, on the work space. Place a handful of coins on this material. Using a timer, remove a coin every 5 minutes. 12 coins will cover 1 hour. At the end of the time span, develop the film or photo paper. A perfect darkroom will leave no evidence. An unsafe darkroom, reveals circular images of the coins. This test will tell you how long it safe to have work out.






          share|improve this answer
































            2














            If you are talking about locating a light leak in a changing bag for loading film into magazines and cameras without a darkroom available…



            Periodically, to check the condition of your changing bag, put a bright light inside the bag through one of the sleeves. Close up the bag. Sit in the darkroom or a closet with no light for a few minutes to let your eyes acclimate. Turn the bag over. Manipulate it. Turn it every which way. Look at it from all angles and pretty soon, you'll see every pinhole if there is one.



            It's easier to see a bright light in a dark room because your eyes will dilate within a few minutes to rival a sensitive emulsion.



            Good Luck.






            share|improve this answer




















            • 1





              Changing bag hack: Make a frame to keep the bag open like a tent frame using a construction set made of dowels and blocks such as TinkerToy™

              – Stan
              4 hours ago













            Your Answer








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            2 Answers
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            active

            oldest

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            3














            In the darkroom, place a piece of the material you will be developing, flat, face up, on the work space. Place a handful of coins on this material. Using a timer, remove a coin every 5 minutes. 12 coins will cover 1 hour. At the end of the time span, develop the film or photo paper. A perfect darkroom will leave no evidence. An unsafe darkroom, reveals circular images of the coins. This test will tell you how long it safe to have work out.






            share|improve this answer





























              3














              In the darkroom, place a piece of the material you will be developing, flat, face up, on the work space. Place a handful of coins on this material. Using a timer, remove a coin every 5 minutes. 12 coins will cover 1 hour. At the end of the time span, develop the film or photo paper. A perfect darkroom will leave no evidence. An unsafe darkroom, reveals circular images of the coins. This test will tell you how long it safe to have work out.






              share|improve this answer



























                3












                3








                3







                In the darkroom, place a piece of the material you will be developing, flat, face up, on the work space. Place a handful of coins on this material. Using a timer, remove a coin every 5 minutes. 12 coins will cover 1 hour. At the end of the time span, develop the film or photo paper. A perfect darkroom will leave no evidence. An unsafe darkroom, reveals circular images of the coins. This test will tell you how long it safe to have work out.






                share|improve this answer













                In the darkroom, place a piece of the material you will be developing, flat, face up, on the work space. Place a handful of coins on this material. Using a timer, remove a coin every 5 minutes. 12 coins will cover 1 hour. At the end of the time span, develop the film or photo paper. A perfect darkroom will leave no evidence. An unsafe darkroom, reveals circular images of the coins. This test will tell you how long it safe to have work out.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 7 hours ago









                Alan MarcusAlan Marcus

                27.5k3 gold badges30 silver badges64 bronze badges




                27.5k3 gold badges30 silver badges64 bronze badges


























                    2














                    If you are talking about locating a light leak in a changing bag for loading film into magazines and cameras without a darkroom available…



                    Periodically, to check the condition of your changing bag, put a bright light inside the bag through one of the sleeves. Close up the bag. Sit in the darkroom or a closet with no light for a few minutes to let your eyes acclimate. Turn the bag over. Manipulate it. Turn it every which way. Look at it from all angles and pretty soon, you'll see every pinhole if there is one.



                    It's easier to see a bright light in a dark room because your eyes will dilate within a few minutes to rival a sensitive emulsion.



                    Good Luck.






                    share|improve this answer




















                    • 1





                      Changing bag hack: Make a frame to keep the bag open like a tent frame using a construction set made of dowels and blocks such as TinkerToy™

                      – Stan
                      4 hours ago















                    2














                    If you are talking about locating a light leak in a changing bag for loading film into magazines and cameras without a darkroom available…



                    Periodically, to check the condition of your changing bag, put a bright light inside the bag through one of the sleeves. Close up the bag. Sit in the darkroom or a closet with no light for a few minutes to let your eyes acclimate. Turn the bag over. Manipulate it. Turn it every which way. Look at it from all angles and pretty soon, you'll see every pinhole if there is one.



                    It's easier to see a bright light in a dark room because your eyes will dilate within a few minutes to rival a sensitive emulsion.



                    Good Luck.






                    share|improve this answer




















                    • 1





                      Changing bag hack: Make a frame to keep the bag open like a tent frame using a construction set made of dowels and blocks such as TinkerToy™

                      – Stan
                      4 hours ago













                    2












                    2








                    2







                    If you are talking about locating a light leak in a changing bag for loading film into magazines and cameras without a darkroom available…



                    Periodically, to check the condition of your changing bag, put a bright light inside the bag through one of the sleeves. Close up the bag. Sit in the darkroom or a closet with no light for a few minutes to let your eyes acclimate. Turn the bag over. Manipulate it. Turn it every which way. Look at it from all angles and pretty soon, you'll see every pinhole if there is one.



                    It's easier to see a bright light in a dark room because your eyes will dilate within a few minutes to rival a sensitive emulsion.



                    Good Luck.






                    share|improve this answer













                    If you are talking about locating a light leak in a changing bag for loading film into magazines and cameras without a darkroom available…



                    Periodically, to check the condition of your changing bag, put a bright light inside the bag through one of the sleeves. Close up the bag. Sit in the darkroom or a closet with no light for a few minutes to let your eyes acclimate. Turn the bag over. Manipulate it. Turn it every which way. Look at it from all angles and pretty soon, you'll see every pinhole if there is one.



                    It's easier to see a bright light in a dark room because your eyes will dilate within a few minutes to rival a sensitive emulsion.



                    Good Luck.







                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered 4 hours ago









                    StanStan

                    4,5539 silver badges22 bronze badges




                    4,5539 silver badges22 bronze badges










                    • 1





                      Changing bag hack: Make a frame to keep the bag open like a tent frame using a construction set made of dowels and blocks such as TinkerToy™

                      – Stan
                      4 hours ago












                    • 1





                      Changing bag hack: Make a frame to keep the bag open like a tent frame using a construction set made of dowels and blocks such as TinkerToy™

                      – Stan
                      4 hours ago







                    1




                    1





                    Changing bag hack: Make a frame to keep the bag open like a tent frame using a construction set made of dowels and blocks such as TinkerToy™

                    – Stan
                    4 hours ago





                    Changing bag hack: Make a frame to keep the bag open like a tent frame using a construction set made of dowels and blocks such as TinkerToy™

                    – Stan
                    4 hours ago

















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