- Body cooling fans for your Sony a7iii!
- Fan assembly replaces the stock eyepiece and is powered by USB.
- The area behind the LCD screen gets quite warm during video recording. The goal is to force air across this area to keep the camera body cooler.
- On my very first 4K shoot with the camera it overheated. While I have not had a problem since then (see “conventional methods” below) I can imagine a time where I will need to use the camera in more extreme conditions and will appreciate some additional peace of mind.
Are there better ways to avoid overheating?
- Conventional methods such as keeping equipment out of direct sun, keeping the battery and SD card doors open, keeping LCD screen fully tilted and pulled out, using a LCD hood to keep screen brightness down, using a dummy battery, avoiding running on USB power so the battery doesn’t charge between takes, rotating batteries between takes/at breaks, turning the overheat shutdown setting to high, etc. will likely have more impact than these fans!
- Operating your camera in extreme conditions, ignoring overheat warnings, etc, may lead to equipment failure/damage, even when using these fans and all conventional methods listed above! Use at your own risk.
Does it vibrate the camera?
- Not that I have noticed.
- Use between takes if this is a concern.
How loud is it?
- Not very loud but you will definitely hear the fans while using the in-camera microphone.
- Use an external/wireless microphone or between takes if this is a concern.
- Fun project.
- Blows air across hot part of the camera body.
- The design could use polishing/tweaking for sure. The final tinkercad project is located here but I was plagued by phantom shapes throughout the process so it may not be that useful or easy to tweak. For a glimpse into madness tinkercad projects 1, 2, and 3.
- Tight fit and nuts/bolts may cause scratches.
- LCD screen must be fully open for the fans to fit.
- Does not draw enough power to run directly off my USB phone battery pack for more than 15 seconds at a time. I may have to experiment with adding some resistors or additional fans to draw more current.
- 1x USB cable - I used an old one from the junk drawer and cut the micro-USB end off
- 1x USB power source - I used a phone power/battery pack but this shuts off after about 15 seconds due to the low current draw. When plugged into a wall charger the devices runs constantly.
- 2x 5V 30MM Raspberry Pi fans wired in parallel - comes with 16mm hardware kit that is too long
- 8x black M3 12MM screws & nuts - flat or button heads would be ideal, but the socket heads in this kit work, it's what I had
Real pain in the butt...
Used the a7iii like camera model for the eyepiece shape. It's not perfect but far better than what I was attempting by scanning, tracing, and using the pen tool in Photoshop. Then used the 30mm fan spacer model and a bunch of kludgy Tinkercad tomfoolery to make the final product.
Thank you to both of those designers for sharing their work publicly!
I was plagued by phantom shapes while grouping in Tinkercad. Made this project a lot more frustrating than it should have been! My own fault for not investing time in learning more professional/robust modeling software.