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Why does my D40 have a shutter lag when using the pop-up flash in full manual mode? There isn't a lag when shooting in any of the auto modes.

I'm shooting in single shot mode. It is a constant lag between shots.

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    \$\begingroup\$ Just what is your exposure set to when in M mode? Do you use high ISO, large aperture, slow shutter speed to let available light do most of the heavy lifting so the flash only has to add a dash of light to round it all off, or is your exposure set so that the flash has to provide all the illumination so that it has to fire at full oomph every time? If so, that is your answer right there. \$\endgroup\$
    – Staale S
    Commented Jan 31, 2011 at 23:32
  • \$\begingroup\$ i have same problem with d80 there is a delay when pop up flash is on but when the pop up flash is off there is no lag \$\endgroup\$
    – ram
    Commented Oct 28, 2018 at 18:04

6 Answers 6

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This is highly likely due to the charging time of the flash. Depending on the camera, one of the following happens in manual (M) mode:

  1. The camera always fires the flash at full-intensity.
  2. The flash power is automatically set by the camera.
  3. Flash power is manually set between 1, 1/2, 1/4, 1/8, etc of full power.

For #1, you will get the full recharge cycle of your flash every time. If you were in any Automatic mode, then the camera may not need to fully charge the flash and you would get a shorter lag.

For #2, the flash recharge cycle will be depending on the aperture and ISO you set. Try the highest ISO and widest aperture you have and then the opposite, to see if this is the case.

For #3, see the Custom Setting Menu on the D40, the lag will be depend on the manually chosen power setting. Try different power settings and you should see the lag change, particularly if you choose 1/32.

On some cameras, there is a setting in the setup menu which lets the camera take a shot even if the flash is not sufficiently charged. From memory, I do not recall the D40 having this.

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You are using your flash on 'red eye removal' Icon: thunder+eye, put it on normal flash Icon: just the thunder.

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  • \$\begingroup\$ Why would this cause the lag described? \$\endgroup\$
    – mattdm
    Commented May 11, 2013 at 18:33
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    \$\begingroup\$ Because it sends out preflashes to dilate the subjects pupils. These are perceptible and probably delay the shutter by a second or more. I would guess it's not the answer here, because the preflashes are quite noticeable \$\endgroup\$
    – MikeW
    Commented May 11, 2013 at 19:52
  • \$\begingroup\$ Absolutely sounds like Red Eye Reduction \$\endgroup\$
    – Dazataz
    Commented Mar 31, 2017 at 18:48
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You did not mention if it is a constant behaviour, or if it happens on continuous shooting. If the latter, then the flash's capacitor needs time to recharge before you can shoot again. This is true for manual, as well as automatic modes.

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  • \$\begingroup\$ It's likely that in TTL mode, your flash isn't firing at full power, which decreases the recycle time mentioned by ysap. \$\endgroup\$
    – Evan Krall
    Commented Jan 31, 2011 at 22:26
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I suspect you're firing in rear-curtain sync mode, which means the flash is fired at the end of the exposure. Switch your flash mode to "auto" and I bet you'll see the delay disappear.

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I faced similar issues with my D7100, whenever I use the X2T trigger in manual mode it lags, and for 2 days I kept searching for an answer but without luck, at the end tho I was able to solve mine by being touchy with the camera.

I held down the pop up flash button and scroll the shutter wheel until the eye icon changed to flash icon. Hope this helps someone else!🙏🤗

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FYI, after literally years of being unable to figure out the lag in taking shots on my d3300 - I discovered the painfully obvious. The memory card was not fast enough for the camera. Finally replaced it with a high speed card (90mb/sec) and it shoots fast for once.

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    \$\begingroup\$ How does the general write speed of media in a camera relate to this question, which is asking about shutter delay when using flash? \$\endgroup\$
    – scottbb ♦
    Commented Jun 9, 2017 at 14:25

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