Using A Lazer To Determine Focus

[Shaps]

I have a 6x9 3D printed camera. I wanted a quick and accurate way to determine focus in the range of 3 to 15 feet or so. I am hand holding the camera and wanted to keepeverything simple, easy to carry and use, small and light.
I have a very good Bosch Measuring Lazer with a built in lens and viewing screen for accurate readings. But it is bigger and takes longer to use with my 6x9 camera.
I just picked up this lazer, https://www.amazon.com/Kiprim-Measuring-Rechargeable-Electronic-LD100/dp/B0FCM48QCM, that does what it claims.
The lazer is green and very bright. I’ve used it outdoors in bright sunlight and it is very easy to see in my desired range. Another bonus is it is very easy to take multiple readings and the devise saves them on the screen in the sequence they were made.
I know I could use DOF with my 65mm Super Angulon but I have better results actually setting the helicoil to my actual focus point.

 

[wiltw]

...and your issue or question is...? Or are you merely you merely sharing your methodology?

It seems that your laser meansurement give PRECISION in distance, yet if the desired distance on the lens focus scale is in between the few engravedl distances, setting the lens is a bit of a guess.

 

[Shaps]

...and your issue or question is...? Or are you merely you merely sharing your methodology?

It seems that your laser meansurement give PRECISION in distance, yet if the desired distance on the lens focus scale is in between the few engravedl distances, setting the lens is a bit of a guess.

Just sharing

 

[MattKing]

FWIW, "Lazer" refers to a brand of cycling helmet

 

[Ardpatrick]

Just sharing

Thanks Shaps. This is interesting for those of us who have previously discussed the need for a solution to the problem of measuring subject distance for non rangefinder coupled / non slr lens focusing. I wasn’t previously aware of green lasers. Thanks

 

[runswithsizzers]

I wanted a quick and accurate way to determine focus in the range of 3 to 15 feet or so

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[Ardpatrick]

...and your issue or question is...? Or are you merely you merely sharing your methodology?

It seems that your laser meansurement give PRECISION in distance, yet if the desired distance on the lens focus scale is in between the few engravedl distances, setting the lens is a bit of a guess.

It’s not so difficult to run a test and verify if 300cm on the lens barrel fx. Is 300cm on your measuring device.

 

[Ardpatrick]

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Solid option under the right circumstances

 

[jeffreyg]

I’m not into much of gadgets but some who are also golfers might check the golf distance lasers. A friend claims his is accurate to less than an inch.

 

[Shaps]

I’m not into much of gadgets but some who are also golfers might check the golf distance lasers. A friend claims his is accurate to less than an inch.

I looked at some golf and hunting lasers, none that I looked at measured close enough. I also have a Bosch Blaze Lazer that I use with a larger 6x17 camera that I use on a tripod. The Bosch is made for outdoor use, has a red light, and has a zoom lens and LCD screen to aim the laser.it’s range is
A few inches to 400 feet. But my new green laser is fast to use and easier to carry.

 

[Shaps]

You might also consider...
View attachment 424769

 

[Shaps]

You might also consider...
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I did, but they don’t stay rigid 10-15 feet out.