Manual flash (Godox TT600) does not fire in Manual mode

Bertrand3000 · 04-20-2021, 10:10 AM

Hi,

I'm discovering flash photography.

I bought a Godox TT600, which is a manual flash (no P-TTL support), mounted on the hot-shoe of my Pentax KP

The flash is fired when the KP is in Auto mode. But whatever I try to do, the flash is not fired when the KP is in M mode. I'm trying to follow the advice here : Flash Photography Camera Settings for Beginners - Improve Photography with F/8, speed 1/200,ISO 200 and Flash power set to 1/16.

I've tried several settings in the internal Flash settings in the KP, but they are probably for the internal flash.

Edit: I think I have found the solution. Reducing speed to 1/160 allowed the flash to fire. I guess 1/200 was already too fast.

Last edited by Bertrand3000; 04-20-2021 at 10:45 AM.

stevebrot · 04-20-2021, 11:40 AM

Originally posted by Bertrand3000

I guess 1/200 was already too fast.

1/180s is the X-sync speed on the KP.

Steve

Mastiff · 04-21-2021, 06:55 PM

I strongly disagree with those numbers especially as the KP’s sync speed isn’t that high.
Try flash on manual, 1/4 power
ISO 100
Shutter 1/125
F-stop f/5.6

Bertrand3000 · 04-21-2021, 11:26 PM

Originally posted by Mastiff

I strongly disagree with those numbers especially as the KP’s sync speed isn’t that high.
Try flash on manual, 1/4 power
ISO 100
Shutter 1/125
F-stop f/5.6

Thanks for the hint, I'll try those settings as well.

04-20-2021, 10:10 AM	#1
Bertrand3000 Veteran Member Join Date: Feb 2019 Posts: 2,009	Manual flash (Godox TT600) does not fire in Manual mode Hi, I'm discovering flash photography. I bought a Godox TT600, which is a manual flash (no P-TTL support), mounted on the hot-shoe of my Pentax KP The flash is fired when the KP is in Auto mode. But whatever I try to do, the flash is not fired when the KP is in M mode. I'm trying to follow the advice here : Flash Photography Camera Settings for Beginners - Improve Photography with F/8, speed 1/200,ISO 200 and Flash power set to 1/16. I've tried several settings in the internal Flash settings in the KP, but they are probably for the internal flash. Edit: I think I have found the solution. Reducing speed to 1/160 allowed the flash to fire. I guess 1/200 was already too fast. Last edited by Bertrand3000; 04-20-2021 at 10:45 AM.

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04-20-2021, 11:40 AM	#2
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by Bertrand3000 I guess 1/200 was already too fast. 1/180s is the X-sync speed on the KP. Steve

04-21-2021, 06:55 PM	#3
Mastiff New Member Join Date: Sep 2020 Posts: 20	I strongly disagree with those numbers especially as the KP’s sync speed isn’t that high. Try flash on manual, 1/4 power ISO 100 Shutter 1/125 F-stop f/5.6

04-21-2021, 11:26 PM	#4
Bertrand3000 Veteran Member Join Date: Feb 2019 Posts: 2,009 Original Poster	Originally posted by Mastiff I strongly disagree with those numbers especially as the KP’s sync speed isn’t that high. Try flash on manual, 1/4 power ISO 100 Shutter 1/125 F-stop f/5.6 Thanks for the hint, I'll try those settings as well.