yn622n-tx always shows TTL-BL

The link below indicates that the 622n-tx screen will reflect the metering mode in effect when the camera powers up, i.e., it will be TTL-BL when you power up in matrix or center weighted metering modes, or TTL when you power up in spot meter mode. It says that if you switch metering modes without powering the camera down, the 622n-tx screen will not reflect the change, although the change has actually occurred. You should be able to verify that this is true by examining the exif data.

http://davidnew.net/site/2014/02/06/yongnuo-yn-622n-tx-wireless-flash-controller-for-nikon-dslrs/

I'll try to verify that behavior myself, when I get a few minutes.

--
Ken

On my d5100, cycling the power on either the 622n-tx or the camera will cause the 622n-tx screen to correctly update to either TTL or TTL-BL, depending on whether the metering mode is set to matrix/center weighted (TTL-BL) or spot metering (TTL) before the power is cycled. If I don't cycle the power, the 622n-tx TTL mode does not change when I change the metering mode on the camera.

I noticed that cycling the power momentarily on the camera does not always cause the 622n-tx to update the TTL mode. Sometimes the camera has to be off for several seconds and then turned on before the 622n-tx updates correctly.

Hi Ken,

Thank you for the link! Great link!

I tried what you said (that you took from the link) and it does the same for me.

Power up spot : no BL shown on the transmitter.

Power up matrix or center : BL shown on the transmitter

However that same link says :

The YN-622N-TX appears to support Nikon’s TTL-BL mode when it displays “BL” on the TX’s screen when your camera is in Matrix or Center Metering modes when you power up the TX. If you are in Spot metering and power up the TX, it will not show the “BL” on the LCD screen. If you change modes without powering down the TX, it continues to show whatever mode you initially powered it up with. Regardless, it is not working in TTL-BL, rather it is in TTL, just like CLS does. Your flash will still show TTL, not TTL-BL, as that is the real mode that it is in. TTL-BL assumes that the flash is at the same distance from the subject as the camera, and does not have a way to know what distance the flash is from the subject if it is not mounted on the hotshoe

Which my own (inside, dark room) test would conclude the same. Whatever the mode I start, the flash acts the same. I will have to do some test outside with a lighter background to conclude for sure.

I have also noticed that when the flash is off camera, the auto white balance of the camera doesn't give the same result as when the flas is on the camera (warmer when flash is off camera). Off camera either with the yn622 combination or controlled via the intenal flash gives the same results.

I have also noticed that off camera, the exposure seems to be about -0,3 EV to than when the flash is on camera

Have a good day!

In the article from the link you gave me and in the firmware update it says that firmware 1.04 now has Free Mask support

Free Mask is a means of creating a mask or cutout around a subject so that the background can be replaced in post-processing.

Take a shot with A main, B fill and C background,then use the free mask button to turn off A and B to get a silhouette image. Then cancel Free Mask and return to A and B original settings.

to activate or deactivate free mask, press the "group" button for a long period of time

Hi Claude,

I agree, that link is very useful. He was very thorough in checking the various features. He even verified that the DOF preview button triggers the modeling light when using the 622n trigger, which is something I was curious about but couldn't verify since my d5100 doesn't have a DOF preview button.

ccarrier said:

I have also noticed that when the flash is off camera, the auto white balance of the camera doesn't give the same result as when the flas is on the camera (warmer when flash is off camera). Off camera either with the yn622 combination or controlled via the intenal flash gives the same results.

I have also noticed that off camera, the exposure seems to be about -0,3 EV to than when the flash is on camera

Click to expand...

I hadn't noticed the white balance and exposure issues, probably because I am not very sophisticated in those areas. I will keep that in mind.

ccarrier said:

Free Mask is a means of creating a mask or cutout around a subject so that the background can be replaced in post-processing.

Take a shot with A main, B fill and C background,then use the free mask button to turn off A and B to get a silhouette image. Then cancel Free Mask and return to A and B original settings.

to activate or deactivate free mask, press the "group" button for a long period of time.

Click to expand...

Interesting feature. I found a comment that this was added at user request. It is nice to know that Yongnuo is responsive to its users.