Probably stupid question on Mirrorless cameras: Since the EVF on a mirrorless camera uses the sensor's image full time, why doesn't that cause any heating problems with the sensor? It...

Bison Bud

Since the EVF on a mirrorless camera uses the sensor's image full time, why doesn't that cause any heating problems with the sensor? It obviously drains the battery faster and it makes sense to me that it's generating heat somewhere and sensor heating has been an issue with some DLSR's, especially on long exposures and shooting videos. I don't mean to start a DLSR verses Mirrorless battle over this, I'm just curious and would appreciate feedback. Good luck and good shooting to all.

SuperflyTNT Loc: Manassas VA

Bison Bud wrote:

Since the EVF on a mirrorless camera uses the sensor's image full time, why doesn't that cause any heating problems with the sensor? It obviously drains the battery faster and it makes sense to me that it's generating heat somewhere and sensor heating has been an issue with some DLSR's, especially on long exposures and shooting videos. I don't mean to start a DLSR verses Mirrorless battle over this, I'm just curious and would appreciate feedback. Good luck and good shooting to all.

There’s a lot more going on when you’re capturing 8K video than just displaying the image. Kind if like how your car engine warms up faster if you’re driving and not just idling.

User ID

Haven’t read your post yet (but I will).

Just wanted to compliment you on a great thread title in this fine moment where the title is all I’ve read so far.

Now I will read the post hoping that it lives up to the promise of your title ;-)

User ID

That’s not a stupid question. And TNT answered quite well. Basically yes there is heat generated but no huge amount just for viewing.

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Anecdotally I believe that LV cameras handle viewing heat better than the LV function of SLRs. My Nikon and Canon SLRs develop hot pixels after extended use of their LV for stills imaging, IOW nonvideo, mainly viewing, only brief moments of recording.

I clear away hot pixels by remapping from black, but further use of LV will provoke them again. OTOH my Sonys, Lumixes, and Olympae almost never have hot pixels.

The two top brands of SLR are rather vulnerable but three brands of LV are nearly immune. Seems significant in terms of designing for intended use.

alexol

User ID wrote:

Haven’t read your post yet (but I will).

Just wanted to compliment you on a great thread title in this fine moment where the title is all I’ve read so far.

Now I will read the post hoping that it lives up to the promise of your title ;-)

Were you aiming for a matching inane answer? Job done... ;)

And yes, the original title could have been more useful.

moonhawk Loc: Land of Enchantment

I usually leave the rear LCD off, and have my Olys set so that the evf is only on when held up to eye level. Minimizes battery drain and, presumably , heat.

one_eyed_pete Loc: Colonie NY

Bison Bud wrote:

Since the EVF on a mirrorless camera uses the sensor's image full time, why doesn't that cause any heating problems with the sensor? It obviously drains the battery faster and it makes sense to me that it's generating heat somewhere and sensor heating has been an issue with some DLSR's, especially on long exposures and shooting videos. I don't mean to start a DLSR verses Mirrorless battle over this, I'm just curious and would appreciate feedback. Good luck and good shooting to all.

This is just my thinking but I liken my camera to my computer. I suspect the major heating source in the camera is the same as in my computer, the processor. That's why there is a heat sink and cooling fan on the processor and not on my LED monitor. When the processor is handling complex calculations (data processing) the current draw increases and generates more heat. I doubt that happens on the sensor or the monitor. Most camera overheating situations I've read about seem to occur while shooting 4K video or long rapid bursts which make the processor work harder.

Nickaroo

User ID wrote:

Haven’t read your post yet (but I will).

Just wanted to compliment you on a great thread title in this fine moment where the title is all I’ve read so far.

Now I will read the post hoping that it lives up to the promise of your title ;-)

You sound like me now. Good to know that their is someone out there that acts like I do.

User ID

moonhawk wrote:

I usually leave the rear LCD off, and have my Olys set so that the evf is only on when held up to eye level. Minimizes battery drain and, presumably , heat.

That saves the battery by not powering either of the viewing screens, but the sensor is still running, and not running any cooler, just for not igniting the two screens. The sensor is always “up” if a live view camera’s main switch is on ... unless you program it to enter “sleep” mode, a sort of standby power level.

Acoarst making exposures does produce more heat than just leaving the sensor “up” but without processing recordings.

User ID

Nickaroo wrote:

You sound like me now. Good to know that their is someone out there that acts like I do.

Takes all kinds ... us included. Not that we are twins or stuff like that.

SuperflyTNT Loc: Manassas VA

Nickaroo wrote:

You sound like me now. Good to know that their is someone out there that acts like I do.

Or bad to know there’s more than one. 😜🤪

User ID

SuperflyTNT wrote:

Or bad to know there’s more than one. 😜🤪

Welcome to the party. You remembered to bring the nachos this time ?

Nickaroo

SuperflyTNT wrote:

Or bad to know there’s more than one. 😜🤪

Hey, we can't help it if we refuse to go with the flow. We are not different from others, they are different than you and I. And too bad for them. Because they would not know how to maneuver our channels as you and I would probably have them stroking out. I think that we should declare right now, This is our World and We are Just letting you Live In It.

User ID

Nickaroo wrote:

Hey, we can't help it if we refuse to go with the flow. We are not different from others, they are different than you and I. And too bad for them. Because they would not know how to maneuver our channels as you and I would probably have them stroking out. I think that we should declare right now, This is our World and We are Just letting you Live In It.

But I’ve found it wondrously entertaining to keep that a secret. Please, think twice before launching the newkyulahr option. Entertainment is a scarce commode tidy these days.

rmalarz Loc: Tempe, Arizona

As of late, I've noticed he does.
--Bob

alexol wrote:

Were you aiming for a matching inane answer? Job done... ;)

And yes, the original title could have been more useful.