Videomaker – Learn video production and editing, camera reviews › Forums › General › How to change aperture in Canon xa30 while recording?
Tagged: Canon XA30
March 30, 2019 at 9:04 AM #72012055Stephen EckertParticipant
In a recent job, I set the Canon xa30 to Manual exposure mode and separately set shutter speed, aperture, and gain using zebra striping to establish the correct exposure while I adjusted gain. I wanted a certain aperture. I then began to record. During the event, I needed to zoom into a TV screen. The zebra striping told me that I was very overexposing. I went to the Mode menu to change the gain but it was grayed out. The Exposure menu was also grayed out. In other words, the camcorder appears to lock out any change I may want to make once I press the Record button if I had previously selected Manual Mode. Is this normal for all camcorders?
March 30, 2019 at 10:15 AM #72012056JackWolcottParticipant
I can’t speak to “all” camcorders. However, I shoot with a Sony NX5U. When beginning to shoot the iris can be set manually from f2.8 to f16. As soon as the camera is zoomed, however, the iris automatically resets to f3.4 and cannot be reset to a wider opening. According to what I’ve been able to determine, Sony considers f3.4 to be the “sweet spot” for that lens and establishing that as the iris open.
Frankly, it’s a technology “solution” that makes the camera almost useless in many shooting situations.
March 30, 2019 at 11:13 AM #72012057Stephen EckertParticipant
Thanks for the info. Your description is not what happens to the Canon XA30. Essentially, when operating under “Manual” control. once the Record button is pressed, no changes can be made to aperture, shutter speed, or gain so long as the camera is recording. What you experience is common for non-fixed aperture lenses. As the lens is zoomed toward telephoto, at a certain focal length, the f/stop will change to another value which you cannot control on any such zoom lens. For example, the instruction manual for Sony NX5U shows the lens aperture being adjustable starting at f1.6. However, the manual cautions that as zooming approaches telephoto (it doesn’t state the exact focal length), the aperture, if set to f1.6, will go to f3.4 as you experienced. When I use a zoom lens (on DSLR or camcorder) having a non-fixed maximum aperture, I set it to the higher value (f3.4 in your case) so that as I zoom, the aperture will not change (assuming camera is operating in Manual Mode.
April 8, 2020 at 2:50 PM #72045292fud9Participant
Found it man! I was googling the same question.
Or if the link wont go through here is a copy and paste.
CUSTOM Dial and ButtonYou can assign to C and the CUSTOM dial one of several frequently used functions. You can
then adjust the selected function using C and the CUSTOM dial, without having to access the
menu. 1 Open the [CUSTOM Dial & Button] screen.[FUNC.] > [MENU] > q > [CUSTOM Dial & Button]2 Touch the desired option and then touch [X].Options( Default value)NOTES• Instead of the procedure above, you can press and hold C to display a quick menu of the options. Use the CUSTOM dial to select an option and then press C.Operating modes:[”Tv/Av]When you set the recording program to [‚ Shutter-Pri. AE] or [“ Aperture-Pri. AE], you can adjust
the shutter speed or aperture value with the CUSTOM dial.[lManual Exposure]When you set the recording program to [n Manual Exposure], repeatedly press C to toggle
between the aperture value, shutter speed and gain. Next,
use the CUSTOM dial to adjust the setting.[x AGC Limit]Adjusts the AGC limit. Press C to display the current AGC limit value and then use the CUSTOM
dial to adjust it.[y Exposure]When using a recording program other than [Š Fireworks] or [n Manual Exposure], you can
compensate the automatic exposure set by the camcorder.
Press C to display the exposure compensation value
and then use the CUSTOM dial to adjust it.[j Off]Use this setting if you do not intend to use C or the CUSTOM dial
- The forum ‘General’ is closed to new topics and replies.