Overheating sensors limit video recording time in dSLRs
(Credit: Leonard Goh/CNET Asia)
When dSLRs with video capture were introduced two years ago, one of their disadvantages was the limited recording time. Most dSLRs can record between 5 and 12 minutes, while camcorders can capture longer footages. No one really knows why dSLRs have this limit, but some users speculate it could be due to the heat generated by the image sensor.
Now, Sony has confirmed that the recording time limit on its latest Alpha SLT-A55 and A33 cameras are due to overheating image sensors. When the image stabilizer is turned on, the A55 can record for a maximum of 9 minutes at 20 degrees Celsius, and the time is reduced to 6 minutes if the temperature rises to 30 degrees Celsius. However, if you turn off the sensor-shift IS, you can film up to 29 minutes.
Now that Sony has confirmed its dSLR sensors heat up when recording videos, at least you know to use a dedicated videocam if you are looking to capture an hour-long footage.
Via Engadget
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