Laser aiming and focus in photomacrography

A forum to ask questions, post setups, and generally discuss anything having to do with photomacrography and photomicroscopy.

Moderators: ChrisR, Chris S., Pau, rjlittlefield

tevans9129
Posts: 129
Joined: Thu Nov 30, 2017 8:03 am
Location: TN

Post by tevans9129 »

What a great idea, thanks for all the info. I am a beginner in this macro photography process and finding the subject through the viewfinder has been very frustrating for me, this should help immensely. Just came from my shop and everything is done just waiting for a battery holder. Thanks again, happy I found this forum. Ted

Chris S.
Site Admin
Posts: 3506
Joined: Sun Apr 05, 2009 9:55 pm
Location: Ohio, USA

Post by Chris S. »

Ted, welcome to the forum! :D

Thanks for letting me know the info was helpful. Makes me happy! (Thanks, too, to those who expressed kind words earlier in the thread. As the many contributors to this forum well understand, these are much-appreciated.)
tevans9129 wrote:Just came from my shop and everything is done just waiting for a battery holder.
You have more patience than I do. I'd surely be taping batteries and wire together right now. . . . :D enjoy your laser!

--Chris S.

tevans9129
Posts: 129
Joined: Thu Nov 30, 2017 8:03 am
Location: TN

Post by tevans9129 »

Chris S. wrote:Ted, welcome to the forum! :D

Thanks for letting me know the info was helpful. Makes me happy! (Thanks, too, to those who expressed kind words earlier in the thread. As the many contributors to this forum well understand, these are much-appreciated.)
tevans9129 wrote:Just came from my shop and everything is done just waiting for a battery holder.
You have more patience than I do. I'd surely be taping batteries and wire together right now. . . . :D enjoy your laser!

--Chris S.
Thanks for the welcome...I found this forum due to your bratcam article on another forum and so glad that I did. It is a great source for those of us that are ignorant of the macro part of photography.

Yawns
Posts: 399
Joined: Sun Dec 20, 2015 9:18 am
Location: Benavente, Portugal

Post by Yawns »

so glad this post is on again.. looked for this before but couldn't find it ...

I got some laser diodes.. 1€ each (France.. not China) .. to make a laser pointer for the camera...
- 5V
- 650 nm
- 5 mW

the thing is.. i'm using a 4,5 V battery ...the beam looks fine when I point to a wall, even a distant wall ... but the beam coming out through the objective is very dim ... I only can see it over the insect in the dark .. mmmm. something is escaping to me here......
YAWNS _ (Y)et (A)nother (W)onderful (N)ewbie (S)hooting

Chris S.
Site Admin
Posts: 3506
Joined: Sun Apr 05, 2009 9:55 pm
Location: Ohio, USA

Post by Chris S. »

Nice bargain, Yawns!
Yawns wrote:. . . the beam looks fine when I point to a wall, even a distant wall ... but the beam coming out through the objective is very dim ... I only can see it over the insect in the dark .. mmmm. something is escaping to me here......
The beam will be darker after traveling through an objective that it would be simply shining on a wall. And the higher the magnification of the objective, the dimmer will be the beam. This said, I have no trouble using my laser (of the same output rating) even with my 100x/0.70 objective. For this, however, I do turn off the room lights.

--Chris S.

Chris S.
Site Admin
Posts: 3506
Joined: Sun Apr 05, 2009 9:55 pm
Location: Ohio, USA

Post by Chris S. »

tevans9129 has posted on his implementation of the sighting laser, "View finder laser for subject location". His post is well worth reading!

--Chris S.

razashaikh
Posts: 124
Joined: Tue Nov 14, 2017 11:40 pm
Location: India

Post by razashaikh »

Great Information, thank for sharing.

MacroLab3D
Posts: 96
Joined: Tue Jan 31, 2017 11:40 am
Location: Ukraine

Post by MacroLab3D »

What to do now, when mirror cameras are gone?
Maybe put it at the top of a tube lens and use as a gun aim? I will try.
Thank you for the idea.

Smokedaddy
Posts: 1710
Joined: Sat Oct 07, 2006 10:16 am
Location: Phoenix, Arizona
Contact:

Post by Smokedaddy »

As always, excellent idea with clear instructions. Looks like it might be a fun 3D printing project too.

-JW:

Smokedaddy
Posts: 1710
Joined: Sat Oct 07, 2006 10:16 am
Location: Phoenix, Arizona
Contact:

Post by Smokedaddy »

Well Chris asked me if I ever made one of these to post it, so here it is. I went a little different route and made mine battery operated. I have plenty of plugs in my wall socket as it is. :shock: This didn't require any tools whatsoever and seems to work fine to me, although I don't know what I'd use it for. I purchased the replacement Canon rubber eye-cup and twin AA battery box (with a switch) on eBay for about $5.00. Used the same machined block and laser that Chris suggested. I made a jig to center the machined block on the eye-cup so it would center properly and glued it on with contact cement. I've used contact cement many times on my 4x5 and 8x10 cameras bellows when replacing them. There is a very slight gap on each side (top and bottom seal fine) but it works as is. It would be very easy to mask the perimeter with (something) and tack hot glue it in place too.

Image

Image

Image

-JW:

Chris S.
Site Admin
Posts: 3506
Joined: Sun Apr 05, 2009 9:55 pm
Location: Ohio, USA

Post by Chris S. »

JW, looks great! Thanks for posting your implementation. I like your replacement eyecup and contact cement approach.

Batteries vs. wall power is probably a "to each his own" sort of choice. I started minimizing batteries in the studio because it used to seem like every time I was ready to shoot, I had to stop and change a battery in something. But these lasers shouldn't drain a battery pack all that fast.

--Chris S.

wvessjr
Posts: 1
Joined: Sun Jun 28, 2020 9:42 am
Location: Cherryville N.C.

Re: Laser aiming and focus in photomacrography

Post by wvessjr »

Will this damage a 5D mark ll
I have ordered the laser and a heat sink to try this.
Walter

Smokedaddy
Posts: 1710
Joined: Sat Oct 07, 2006 10:16 am
Location: Phoenix, Arizona
Contact:

Re: Laser aiming and focus in photomacrography

Post by Smokedaddy »

I wondered the same thing. Since I'm involved in Astronomy too this is the only information I was able to find.

https://www.cloudynights.com/topic/4611 ... nder-safe/

-JW:

aveslux
Posts: 68
Joined: Tue May 28, 2019 6:13 am

Re: Laser aiming and focus in photomacrography

Post by aveslux »

Lasers can damage your sensor so be careful when you use them.

Post Reply Previous topicNext topic