One camera unable to focus in low light, different camera, same brand model, has no problem












5














With a Canon T3i mounted in a camera/flash tower, the camera cannot focus in low ambient light with dark complected subjects. All the settings are preset as this is being used in a drivers license office in a booth. It works fine otherwise. I swapped out the camera tower with another (different Canon T3i, different flash tower) and had no problem in same dim light, same dark subject. Why does one camera have this issue and not the other? Same make, model, lens, settings.










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  • Maybe relevant: photo.stackexchange.com/questions/103282/… with all its linked questions
    – confetti
    Dec 27 '18 at 9:53
















5














With a Canon T3i mounted in a camera/flash tower, the camera cannot focus in low ambient light with dark complected subjects. All the settings are preset as this is being used in a drivers license office in a booth. It works fine otherwise. I swapped out the camera tower with another (different Canon T3i, different flash tower) and had no problem in same dim light, same dark subject. Why does one camera have this issue and not the other? Same make, model, lens, settings.










share|improve this question






















  • Maybe relevant: photo.stackexchange.com/questions/103282/… with all its linked questions
    – confetti
    Dec 27 '18 at 9:53














5












5








5







With a Canon T3i mounted in a camera/flash tower, the camera cannot focus in low ambient light with dark complected subjects. All the settings are preset as this is being used in a drivers license office in a booth. It works fine otherwise. I swapped out the camera tower with another (different Canon T3i, different flash tower) and had no problem in same dim light, same dark subject. Why does one camera have this issue and not the other? Same make, model, lens, settings.










share|improve this question













With a Canon T3i mounted in a camera/flash tower, the camera cannot focus in low ambient light with dark complected subjects. All the settings are preset as this is being used in a drivers license office in a booth. It works fine otherwise. I swapped out the camera tower with another (different Canon T3i, different flash tower) and had no problem in same dim light, same dark subject. Why does one camera have this issue and not the other? Same make, model, lens, settings.







focus low-light






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share|improve this question











share|improve this question




share|improve this question










asked Dec 24 '18 at 15:10









Robert DrainaRobert Draina

261




261












  • Maybe relevant: photo.stackexchange.com/questions/103282/… with all its linked questions
    – confetti
    Dec 27 '18 at 9:53


















  • Maybe relevant: photo.stackexchange.com/questions/103282/… with all its linked questions
    – confetti
    Dec 27 '18 at 9:53
















Maybe relevant: photo.stackexchange.com/questions/103282/… with all its linked questions
– confetti
Dec 27 '18 at 9:53




Maybe relevant: photo.stackexchange.com/questions/103282/… with all its linked questions
– confetti
Dec 27 '18 at 9:53










2 Answers
2






active

oldest

votes


















9














One possibility to check - is the AF assist light turned off or failed on the problem camera? You say the settings are the same - have you checked all of them, including ones hidden in the setup menus (which is where the AF light on/off one is usually found) and the selected AF point/mode?



Some of the menu settings (at least on my Nikon, but I suspect Canon is the same) don't show anything in the viewfinder or top panel LCD, so it can be easy to miss changes unless you go through all the menus :)



The relevant menu on a Canon 70D, yours should be close:



enter image description here



enter image description here






share|improve this answer























  • Thank you. I will check that. I'm thinking that maybe the preset instructions in the drivers license program doesn't actually take that setting into account.
    – Robert Draina
    Dec 27 '18 at 20:13



















0














If you changed the flash at the same time you changed the camera, the the AF assist light in one of the flashes could be not working properly. Try using the same flash with both cameras to rule out or confirm that there is a problem with one of flashes.






share|improve this answer





















  • I didn't swap the camera out of the tower, I just removed the mounted camera tower with another but I will take a look at that AF assist setting in the camera when I pull it out of the tower, especially since so far this is the only camera in the state that has shown this issue. Thank you.
    – Robert Draina
    Dec 27 '18 at 20:15











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2 Answers
2






active

oldest

votes








2 Answers
2






active

oldest

votes









active

oldest

votes






active

oldest

votes









9














One possibility to check - is the AF assist light turned off or failed on the problem camera? You say the settings are the same - have you checked all of them, including ones hidden in the setup menus (which is where the AF light on/off one is usually found) and the selected AF point/mode?



Some of the menu settings (at least on my Nikon, but I suspect Canon is the same) don't show anything in the viewfinder or top panel LCD, so it can be easy to miss changes unless you go through all the menus :)



The relevant menu on a Canon 70D, yours should be close:



enter image description here



enter image description here






share|improve this answer























  • Thank you. I will check that. I'm thinking that maybe the preset instructions in the drivers license program doesn't actually take that setting into account.
    – Robert Draina
    Dec 27 '18 at 20:13
















9














One possibility to check - is the AF assist light turned off or failed on the problem camera? You say the settings are the same - have you checked all of them, including ones hidden in the setup menus (which is where the AF light on/off one is usually found) and the selected AF point/mode?



Some of the menu settings (at least on my Nikon, but I suspect Canon is the same) don't show anything in the viewfinder or top panel LCD, so it can be easy to miss changes unless you go through all the menus :)



The relevant menu on a Canon 70D, yours should be close:



enter image description here



enter image description here






share|improve this answer























  • Thank you. I will check that. I'm thinking that maybe the preset instructions in the drivers license program doesn't actually take that setting into account.
    – Robert Draina
    Dec 27 '18 at 20:13














9












9








9






One possibility to check - is the AF assist light turned off or failed on the problem camera? You say the settings are the same - have you checked all of them, including ones hidden in the setup menus (which is where the AF light on/off one is usually found) and the selected AF point/mode?



Some of the menu settings (at least on my Nikon, but I suspect Canon is the same) don't show anything in the viewfinder or top panel LCD, so it can be easy to miss changes unless you go through all the menus :)



The relevant menu on a Canon 70D, yours should be close:



enter image description here



enter image description here






share|improve this answer














One possibility to check - is the AF assist light turned off or failed on the problem camera? You say the settings are the same - have you checked all of them, including ones hidden in the setup menus (which is where the AF light on/off one is usually found) and the selected AF point/mode?



Some of the menu settings (at least on my Nikon, but I suspect Canon is the same) don't show anything in the viewfinder or top panel LCD, so it can be easy to miss changes unless you go through all the menus :)



The relevant menu on a Canon 70D, yours should be close:



enter image description here



enter image description here







share|improve this answer














share|improve this answer



share|improve this answer








edited Dec 24 '18 at 17:55









xenoid

2,490316




2,490316










answered Dec 24 '18 at 16:23









JerryTheCJerryTheC

2,805312




2,805312












  • Thank you. I will check that. I'm thinking that maybe the preset instructions in the drivers license program doesn't actually take that setting into account.
    – Robert Draina
    Dec 27 '18 at 20:13


















  • Thank you. I will check that. I'm thinking that maybe the preset instructions in the drivers license program doesn't actually take that setting into account.
    – Robert Draina
    Dec 27 '18 at 20:13
















Thank you. I will check that. I'm thinking that maybe the preset instructions in the drivers license program doesn't actually take that setting into account.
– Robert Draina
Dec 27 '18 at 20:13




Thank you. I will check that. I'm thinking that maybe the preset instructions in the drivers license program doesn't actually take that setting into account.
– Robert Draina
Dec 27 '18 at 20:13













0














If you changed the flash at the same time you changed the camera, the the AF assist light in one of the flashes could be not working properly. Try using the same flash with both cameras to rule out or confirm that there is a problem with one of flashes.






share|improve this answer





















  • I didn't swap the camera out of the tower, I just removed the mounted camera tower with another but I will take a look at that AF assist setting in the camera when I pull it out of the tower, especially since so far this is the only camera in the state that has shown this issue. Thank you.
    – Robert Draina
    Dec 27 '18 at 20:15
















0














If you changed the flash at the same time you changed the camera, the the AF assist light in one of the flashes could be not working properly. Try using the same flash with both cameras to rule out or confirm that there is a problem with one of flashes.






share|improve this answer





















  • I didn't swap the camera out of the tower, I just removed the mounted camera tower with another but I will take a look at that AF assist setting in the camera when I pull it out of the tower, especially since so far this is the only camera in the state that has shown this issue. Thank you.
    – Robert Draina
    Dec 27 '18 at 20:15














0












0








0






If you changed the flash at the same time you changed the camera, the the AF assist light in one of the flashes could be not working properly. Try using the same flash with both cameras to rule out or confirm that there is a problem with one of flashes.






share|improve this answer












If you changed the flash at the same time you changed the camera, the the AF assist light in one of the flashes could be not working properly. Try using the same flash with both cameras to rule out or confirm that there is a problem with one of flashes.







share|improve this answer












share|improve this answer



share|improve this answer










answered Dec 26 '18 at 19:22









abetancortabetancort

35315




35315












  • I didn't swap the camera out of the tower, I just removed the mounted camera tower with another but I will take a look at that AF assist setting in the camera when I pull it out of the tower, especially since so far this is the only camera in the state that has shown this issue. Thank you.
    – Robert Draina
    Dec 27 '18 at 20:15


















  • I didn't swap the camera out of the tower, I just removed the mounted camera tower with another but I will take a look at that AF assist setting in the camera when I pull it out of the tower, especially since so far this is the only camera in the state that has shown this issue. Thank you.
    – Robert Draina
    Dec 27 '18 at 20:15
















I didn't swap the camera out of the tower, I just removed the mounted camera tower with another but I will take a look at that AF assist setting in the camera when I pull it out of the tower, especially since so far this is the only camera in the state that has shown this issue. Thank you.
– Robert Draina
Dec 27 '18 at 20:15




I didn't swap the camera out of the tower, I just removed the mounted camera tower with another but I will take a look at that AF assist setting in the camera when I pull it out of the tower, especially since so far this is the only camera in the state that has shown this issue. Thank you.
– Robert Draina
Dec 27 '18 at 20:15


















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