How The Lens Aperture Mechanism Works In Detail - How It Works Canon 50mm f1.8 II
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- Опубликовано: 6 ноя 2019
- Presentation, assembling and disassembling of a Canon 50mm f1.8 II aperture mechanism to show in detail how aperture works in the lenses. Please don't try this at home as you would break your 50mm lens irreparably. Please comment, like and subscribe for more.
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Tom 
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That's incredible. It took me about 2 hours to put my 8-blade Canon secondary aperture back together. One of the most patience-trying activities I've ever done. Twice.
Thank you. Just pure info. Very well. Was thinking about inner workings... and within 7 minutes all is clear.
Until today I've always wondered how this worked thanks for satisfying my curiosity 👍
Its really good man thanks for sharing
Thank you! I was wondering exactly how apertures work!
Thanks so much i was always curious about this mechanism
Very enlightening and easy to understand. Thank you! 😊
Thanks for the comment.
Excellent ! Thank you very much.
Awesome video :)
Thanks man for the video
Very helpful!
thx that has been effective for me🙏
Thanks for making this video. It was really helpful for me.
You are welcome
Thank you sir!!
Informative thanks
Helpful!
This was very interesting
When I was a child I used to see aperature doors in cartoons
Then one day I decided to find out how it works
Last I remember
Centre pivot and side rod
Very interesting! So what we see here, is that the blades are pulled by the top ring, causing them to travel through the lower guide rail while also rotating inward? I imagine the rotation of the blade is caused by the upper peg having a different path of travel than the lower peg.
Nice explanation of aperture function :-)
Thanks
Thank you very much!
You're welcome
great! how hard will it be to change the whole thing to one ready has 12 or more round blades??
I remember the scene Dallas moving through the air shafts in Alien 1. The shafts was getting closed just like this aperture 😬😬🙃
I have a question. Under what circumstance could the aperture get completely closed?
I disassembled part of a 35mm lens to clean the blades and at one point their travel points seem to change so it didn't fully open and it went passed the smallest aperture (completely shutting) so I didn't try to open the mechanism any further and manage to get the points back to their position but I'm still concerned that they could be in the wrong positions...
Thank You - ! i came here to make such parts and a big cartoon diaphragm :) I do the same things with the dumpster utilities before getting rid of them completely just as you did with the broken lens :) - tear them apart!
Sometimes we can learn loads of things.
hello! Is there a reason why you don't assamble it upside down? seems that it would be easier to put the dots in the small holes. Thanks for the video.
thanks 👍
Nice
Thanks
For an O’Neill cylinder, I thought the central spine Will be held in place at the ends and in several areas in the middle, and you could have essentially an aperture mechanism like this and you could use mirrors to illuminate the interior, or at least help it. This will be useful with solar and fission, besides hydrogen fuel cells if you were parked by Saturn and Jupiter
The other possibility, is to use fission and fusion, along with solar to help power their lighting system. That would be useful to give you an idea for an interstellar class cylinder. That’s just not ideal for around the solar system where you already have a star.
Hi Tome, is there any way of taking photos of each individual part? Trying to re-create this mechanism in 3D 🙂
Hi Matt, thanks for your comment. I would love to be helpful, but I don't own it anymore.
@@TomeRodrigo Oh gotcha, no worries man! Thanks so much for the reply :)
Hi Matt, were you able to recreate this mechanism in 3D? I am looking to add this design into another custom project of mine. Thank you!
@@jasonhsiao6661 I got fairly close with it. What’s your email?
Just out of curiosity, where did you happen to get this part? I am looking for one for a project for my university as a mechanical engineering student.
I've disassembled Canon 50mm f1.8 mk2 old lens...
Question, how does constant apertures stays constant throughout the different focal length on some expensive lenses, what is the mechanism behind?
The blades just stay in the same position??
What material are the blades made of? Plastic or some sort of metal?
I have absolutely no idea...but it doesn't feel like plastic..
@@TomeRodrigo if you still have it, try to use a magnet to see if it is metal
I don't have it anymore.
@@algenovex FYI "metal" does not necessarily mean "magnetic"
i bet this is how they made the torture freddy eyes
What lens is this mechanism out of?
The name of the video says.
@@TomeRodrigo oh! duh
i dont know but last video I watched was StarGate episode
Maybe im just dumb, but how the hell does the sensor see through the aperture blades
My English is not good enough to explain it to you :D
@@TomeRodrigo thats ok! :)
@@TheShipMunksTV The sensor will always see well at any aperture because the other lens components inside will magnify or reduce the actual frame that goes through the blades (optics laws)
@@adrianzaharia8342 i understand that all the light converges at One point, which u assume is at the aperture blades, but i just cant understand how the aperture makes a difference at all.
@Lucestre maybe just like this put 1 piece of hair in front of your eyes ,, well you still can see the object/view that through the hair
Maybe you should change the title. This video does not explains how it works only how to manualy change the aperture.
Different people, different logic.