PhotoJoseph shows the difference between an electronic shutter and a mechanical shutter
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hey everybody it is Tuesday May 31st last a day of May I'm photo Joseph and welcome to photo justice photo moment so today Oh actually before you started if you are watching this live do me a favor hit that little share button down below on on the Facebook thing let's get this thing shared out there it gets more people watching it that'd be super cool and fun I'd appreciate that and of course as we're going if you have any questions want to throw anything at me just hit it in the comments I am watching it on the screen in front of me so let's see here today hope you had a great long weekend for those of you in the u.s. who had a long weekend for those who aren't in the US if you're wondering why I wasn't here yesterday it's because we had a long weekend in the u.s. um alright so today's photo moment is actually going to be about a picture a comparison picture that I posted last week on Facebook and Instagram it developed quite a bit of conversation so I thought it might be something worth bringing up and talking about today and this is a comparison photo that I posted between an electric electronic shutter and mechanical shutter so first up let me just pull up the image here so you can see what we're talking about so this is the this is the image that was posted you can see the the difference dramatic difference between the two photos and this is of course a propeller on a plane that was on Monday and at the top we see a mechanical shutter on the bottom we see the electronic shutter and now the top image the mechanical shutter shot at thirty two hundredths of a second and you can see that the propeller blades are nearly frozen not completely completely frozen there's a little bit of motion blur in there but they of course look like propellers whereas the electronic shutter image shot at 112 thousands of a second is something else entirely you've been wondering what the heck is happening there so let me actually back up let's take a look at a couple of the others that I shot because I just kind of shot off a bunch of them wanting to to compare I wanted to get a really cool looking one so that was that's one of them as you can see these here that here the blades are not even totally connected it's just completely bizarre here warping around there just this bizarre bizarre and that's the one that I used really bizarre thing that happens when you're shooting electronic shutter cut fast moving objects and of course there's a couple of mechanical shutter ones freezing those blades or nearly freezing them okay so what happens why does this happen and that's of course what I wanted to talk about so first of all let's talk about a mechanical shutter and what is happening with a mechanical shutter and then we'll get into electronic shutter because that helps to understand the difference in a mechanical shutter in a standard DSLR basically what happens the mirror flips up out of the way the center opens shutter closes and the mirror comes back down on a mirrorless camera there's no mirror to flip it out of flip back and forth out of the way but what happens is the shutters actually open all the time because you're otherwise you wouldn't see anything through the lens so the shutter is open already so when you take the picture the shutter closes opens to expose it closes again to finish the exposure and then opens again to 2 so you can see what's coming up next so even though on electronic sorry on a mirrorless camera the shutter is opening and closing twice per picture it is still faster than that mirror flipping up out of the way the shutter opening closing the mir flipping back down again which is why you can generally get higher but I shouldn't say universally because I don't know all the specs and all the cameras but generally you'll find that you can get a higher frame rate on mirrorless cameras and irrelevant to this so in this situation was happening to the shutters opening exposing all at once and the shutter is closing so that allows us to freeze motion like we saw in the propellers that were frozen with an electronic shutter the shutter never opens and closes essentially the the sensor turns on and it turns off so it turns on for a very brief amount of time and then turns off and it records that during that time and this is basically like video videos is turning the recording on and off so that's all that's happening for a very short amount of time in this case it was 112 thousands of a second however there's a shot on the GX 8 I don't remember how high that camera goes it's hot you can get some crazy crazy fast shutter speeds this way but you if you have very fast-moving objects you end up with that weirdly distorted image that we see here so the reason that you get this distortion is because the entire sensor is not being recorded at once it's not being recorded at the same time it is actually scanned one line at a time so obviously over a very very fast period of time but essentially it is scanning writing pixels the screen over and over again in a very fast fashion all the way down to the bottom so if you're photographing something that's not moving a lot uh you're not going to see are not moving at all then you're not going to see any problem distortion at all whatsoever but if you have something that is moving quickly especially moving horizontally quickly you're going to get some strange distortions and the easiest way that you can reproduce this is if you grab your your iPhone or your Android whatever your smartphone which all have electronic centers and you're in a car don't do this will driving and you're in a car and you take a picture at the side of the car as you're driving past trees or light posts or any vertical subject closer to the car is going to be better because the relative speed to the camera will be faster will be greater you'll see that object lean so what happens is if your to the photograph looking this way the pictures going to lean because as the scan was going right your object is moving let's say right you're you're driving by so obviously the objects are moving you're moving but as far as the camera is concerned the object is moving and it's recording align align align align align align align like this and so you end up with this leaning subject so in the case of the propeller because there's just insane motion this thing's spinning around like this there's multiple blades it you get this really distorted bizarre effect as it draws through the lines and that's it that is the difference between mechanical shutter and electronic shutter and why you see this Distortion the advantage of electronic shutter is you can shoot much faster as you saw here on this one one 12 thousandths of a second that's kind of fast mechanical shutters go up to typically either four thousands or on higher end cameras than eight thousand sin a second this will go I should about the camera in here um I want to say twenty thousand maybe it's even higher that I'm sure sorry I'll try remember maybe if someone actually posted in the comments I will look it up there but that's basically the difference there so that's all there is to it that's what I wanted to tell you about today so let's see is there about seeing any questions or comments in here so I'm just refresh the screen real quick and double check uh nope nobody in there so Chris Briscoe thanks for watching buddy thanks for the like in there somebody shared that maybe that was Chris's well I appreciate that my friend if we aren't you riding cross-country right now don't you have something better to do than watch me right now Chris Briscoe who all of you have seem on that no here not in this shell but in a conversation show is currently riding cross-country with his son with on bicycles which is just awesome a really really cool adventure so be sure to check check that I look up Christopher Briscoe dot-com and I thought if he's posting photos they're supposed to in Facebook anyway that's the guy searching mouth uh let's see I think that's it for today so as always if you have any questions that you'd like me to address on this little photo moment please by all means drop them into the comments also just so you know these will live on Facebook I've decided to just leave these on Facebook and definitely this is where the conversation is happening you can also find them over at my website photo apps dot expert there are going onto their they're now going onto their so they'd like as soon as this is done we'll get push there as well so it's gonna be all over the place we're actually looking into the feasibility of turning this into a podcast as well why not take this video and push it into a podcast stream so if you can't catch it live you'd be able to catch it later as a video podcast kind of fun alright I think that's it uh if again if you're whenever you're watching this live or not please share and like and all that good stuff and of course 9:30 a.m. Pacific time we are here live every working day by the way on that note I am going to be doing some traveling coming up here and I have a couple of work trips and also family vacation so I may adjust the timing to coordinate when it's best to do for the trip so we'll see how that works out but of course I will let you know if the time shifts in advance right that's it guys thank you very much take care you