Pinhole Lens mk3 Basics and Assembly | Standard Cameras

[@Kynaeus]

I absolutely love how your videos have markers, chapters, captions, video descriptions, and all that because not only are they incredibly helpful tutorials but they're also 1) respectful of the viewer's time, and 2) VERY well structured to ensure I can easily come back here again and easily reference the information I needed

[@twalker500_]

Solid informative useful good video

[@hakkun1]

What a snazzy design! Thanks for all the info!

[@RustyTube]

May I suggest something for Mk IV? Print a shallow vertical groove between the top and bottom screw holes, and a horizontal one between the left and right screw holes (in the back). Physical and occupational therapists would love you for it because it would help the elderly and disabled people to position the pinhole perfectly in the center (it would be even better if the the back of the pinhole piece had corresponding raised lines/tabs, so the whole thing would fall in place automatically, but I realize you don’t have much control over that since you’re ordering it from someone else).

[@RustyTube]

I envy you that screwdriver. I am currently building a Prusa 3D printer (while anxiously waiting for your new and improved metric camera design). It uses M3 screws but came with a bunch of Allen wrenches. I am 72, so my fingers are not as nimble as they used to be: Those darn Allen wrenches tend to fall on the floor a lot, while I am trying to use them. So the thing I desire right now is having a screwdriver for the metric M3 hex nuts. I did not think such screwdrivers even existed, but low and behold, you are using a very nice screwdriver with those M3 nuts. Now I wish you had that type of screwdriver available from your store.

[@RustyTube]

Well, I went to a hardware store, and now I have a set of seven such metric hex screwdrivers. They actually are the ball-end type, so they also work at an angle. So I have to thank you for letting me know hex screwdrivers do exist. :) I bet you don’t realize just how helpful you are (many KZbinrs just annoy an old guy like me with their mumbling, but you are a perfect video teacher who gets straight to the point and stays on the point). Now I should be able to finish my Prusa 3D printer in no time. That said, I almost hate to say it, but you should not be referring to pinholes as _pinhole lenses._ They are _not_ lenses. They are simply pinholes.

[@drew_nikonowicz]

Many thanks for the compliment! With all the videos I post - whether it be art, gaming or the photo/tutorial stuff - I really try to get to the point and be respectful of the viewer's time :)

[@nate_0723]

What size is the pinhole on the shop? The description does not say.

[@drew_nikonowicz]

You're right it does not! I must have accidentally deleted that - I'll re-add it now. It's a 0.5mm pinhole lens!

[@chocopapi6427]

hello !! looking to get the diy kit for the version 2.0 4x5 soon and im very excited to do so, but i had a question about the lens. what would you say the exposure times are for 0.5mm pinhole ?

[@drew_nikonowicz]

Hey! Great question (I should make a video about this!) Basically you can get estimated exposure times by doing a little math. You can calculate the f number of a pinhole by dividing the focal length by the pinhole (lens) diameter. 😵SO: Our pinholes are .5mm. Let's say you're using it with the lens 100mm away from the ground glass. This means your f number is 100 multiplied by .5 which equals 200. In this configuration, your f stop is f200. On a sunny day (if your meter said 1/500 @ f16 with a normal lens), your exposure time would be approximately 1/30 of a second. Basically you get to decide the focal length of your pinhole by moving the lensboard forward and back. This changes your focal length and angle of view, rather than focusing the lens (since there is no lens). From there you just have to do a little math. If you knew any of this I apologize, but I figured I would be thorough in case anyone else comes along and has the same question later!

[@chocopapi6427]

@@drew_nikonowicz great !! i didn’t know ANY of this, thank you !! if you make a video about this, i’ll be there.🫡