cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

My Canon T6I Overexposed the photos when is in AV with Teleconverter attached.

Kstar
Apprentice

My Canon T6I Overexposed the photos when is in AV with Teleconverter attached. If i am on Live View mode no problem.  The same with the autofocus. If the camera it's not on live view can't get on good focus. The same with the Tamron teleconverters no autofocus. My Canon SL1 camera never give me this problems. Also with Canon SL1 i am able to get autofocus with Tamron 1.4x and 2x teleconverters every time. Plus the photos never overexposed with teleconverters if it's not on live view mode. So i am thinking to retern T6I camera if it's not better than my SL1 camera. I am wondering T6I is deffective or it is normal to be like that ? If anybody know please help.

1 ACCEPTED SOLUTION

kvbarkley
VIP

What lens is the teleconverter used on? If it makes the lens too slow there is no guarantee it will autofocus.

View solution in original post

3 REPLIES 3

kvbarkley
VIP

What lens is the teleconverter used on? If it makes the lens too slow there is no guarantee it will autofocus.

cicopo
Elite

Over or Under exposure is easily corrected by using Exposure Compensation, which you should learn to use anyway. Not all scenes can be considered as evenly lit.

"A skill is developed through constant practice with a passion to improve, not bought."

Kstar
Apprentice

Thank you . But I am profesional photograph mostly times so I should know how to make photos. I solve the problem . Now I got auto focus with 1.4x Tamron teleconverter. and 400mm F5.6  Canon lens, F8 with the teleconverter. And when I put 2x teleconverter the Camera can't auto focus on F11 and overexposed when is not on live view mode. I am talking very bright photos not just a normal bright. You almost not recognize what is in the picture . This is not normal for AV mode because the speed should be adjusted from the camera automatically and never can overexposed too much. I can successfully get auto focus with 2x teleconverter and 400mm F5.6  Canon lens , F11 with the  teleconverter and never overexposed on AV mode with Canon SL1 camera. And when I upgrade to my new Canon T6i camera I was not be able to get auto focus on Tamron 2x Teleconverter any more. So I thing that's will be a good info just in case somebody is looking to get auto focus with 1.4x and 2x Tamron teleconverters on Canon 400mm F5.6 lens and Canon SL1 body . Not a problem with this combination. Just a make sure when use Tamron 1.4x teleconverter set the focus points to manual 1 point on the camera. And set to multipoints  when use 2x Tamron teleconverter. That's how you will get nice and very fast autofocus .This is not working with Canon 1.4x and 2x teleconverers . I alredy tested .Thanks everybody try to help me.

Announcements
01/18/2023: New firmware version 1.1.1 is available for EOS R6 Mark II
01/09/2023: Help ensure your autofocus is properly aligned with a Canon Precision Alignment
01/03/2023: Welcome to CES 2023!
12/08/2022: New firmware version 1.0.5.1 is available for EOS C70
12/07/2022: New firmware version 1.7.0 is available for EOS R5
12/07/2022: New firmware version 1.7.0 is available for EOS R6
11/22/2022: New firmware available for EOS R3, EOS R7 and EOS R10
11/16/2022: We're thrilled to be ranked among the Best Employers for Veterans in 2022 by Forbes.
08/31/2022: New firmware version 1.1.1 is available for RF 70-200mm L IS USM
08/09/2022: New firmware version 1.2.0 is available for CR-N 300
08/09/2022: New firmware version 1.2.0 is available for CR-N 500
07/14/2022: New firmware version 1.0.1 is available for CR-X300
06/10/2022: Service Notice:UPDATE: Canon Inkjet Printer continuous reboot loop or powering down
06/07/2022: New firmware version 1.3.2 is available for PowerShot G7 X Mark III
05/31/2022: Did someone SAY Badges?
05/26/2022: New firmware version 1.0.5.1 is available for EOS-C500 Mark II
05/26/2022: New firmware version 1.0.3.1 is available for EOS-C300 Mark III
05/10/2022: Keep your Canon gear in optimal condition with a Canon Maintenance Service
05/05/2022: We are excited to announce that we have refreshed the ranking scale within the community!
04/26/2022: New firmware version 1.0.1.1 is available for EOS R5 C
03/23/2022: New firmware version 1.0.3.1 is available for EOS-C70
02/09/2022: Share Your Photos is back!
02/07/2022: New firmware version 1.6.1 is available for EOS-1DX Mark III
01/19/2022: READY FOR ANYTHING EOS-R5 C
01/13/2022: Community Update. We will be retiring the legacy profile avatars on 01/20/2022. Click this link to read more.