DIY Imagon Apertures

[Peter De Smidt]

https://www.dropbox.com/s/99clyqhzs98ng70/IMG_2607.JPG?raw=1

I used a cnc machine at my library to make some apertures form my 300mm Imagon. I used an old spare phenolic darkslide. Based on the H5.8 disk, the new disks go to the inside edge of the larger peripheral holes, the middle of the same holes, and the outside edge. That gives diameters of 40.4mm, 46.1mm, and 51.8mm I don't like the standard disks because the funky aperture makes out of focus highlights look like the aperture. Hopefully, I'll have some time to take some photos with the new disks today.

[Tin Can]

Good job and now we see what you wanted to do.

Waiting patiently for images!

[Jac@stafford.net]

I made a sieve but it could not replicate the variations of the originals.Best of luck to you.

[Bob Salomon]

Just close the holes by rotating the outer knurled rim of the disk. Why reinvent the wheel?

[Peter De Smidt]

Because this gives a larger diameter aperture than doing that.

[Peter De Smidt]

https://www.dropbox.com/s/iuqya8hax7304ey/Tree_Merrill-0512.jpg?raw=1

[Tin Can]

I see the light!

[Peter De Smidt]

https://www.dropbox.com/s/tfy8p01lgmptavh/RR_Bridge-0513.jpg?raw=1

[Louis Pacilla]

Excuse my chiming in late but is your Imagon in barrel or shutter? Trying to figure out why your not using the built in iris unless of course yours is in barrel mount.

Those Images are OUT OF THIS WORLD terrific by the way Peter! LOVE them!

[Peter De Smidt]

Thanks, Louis. Yes, the lens is in a barrel. I use it with a Sinar shutter. Using the apertures also allows perfectly round holes.

[Tin Can]

Like!

It's very much how I see things with my fading vision...even with glasses...




https://www.dropbox.com/s/tfy8p01lgmptavh/RR_Bridge-0513.jpg?raw=1

[Peter De Smidt]

Thanks, Randy. I'm very sorry to hear about your vision!

[Tin Can]

Don't be sorry. Certainly not your fault!




Thanks, Randy. I'm very sorry to hear about your vision!

[Jac@stafford.net]

Like!

It's very much how I see things with my fading vision...even with glasses...

Randy, this month I will be having cataract surgery at the Gundersen Clinic and having their best intraocular lenses inserted. As it is now, my vision cannot be corrected to 20/20 but with luck they will be good again soon. If you have Medicare the lenses cost extra and I would be happy to help out if you need it.

[Tin Can]

Thank you Jac!

However I had that done almost a year ago by the local expert.

Glaucoma has me also. I use a lot of eye drops.

Good luck with your operation

They used Ketamine on me. No pain but I was aware he was doing something!


Randy, this month I will be having cataract surgery at the Gundersen Clinic and having their best intraocular lenses inserted. As it is now, my vision cannot be corrected to 20/20 but with luck they will be good again soon. If you have Medicare the lenses cost extra and I would be happy to help out if you need it.

[jnantz]

https://www.dropbox.com/s/iuqya8hax7304ey/Tree_Merrill-0512.jpg?raw=1


WOW !
What a beautiful photograph, thanks for sharing !
John

[EH21]

So the rings you made are used instead of the regular imagon H5-8 strainer?

[Peter De Smidt]

Yes. I used my middle-sized one for these pictures.

[seven]

wow, this is so much better than the sieve thingies !

[jon.oman]

https://www.dropbox.com/s/iuqya8hax7304ey/Tree_Merrill-0512.jpg?raw=1

Wow!

[Tin Can]

Imagons are back!

[Bernice Loui]

Have this six disc versions in 300mm. If interested, possible to put the disc in a scanner to get their hole size and location for replication if interested. This would require some work to get done. Can measure the hole sizes to 0.001" if needed.

https://www.largeformatphotography.info/forum/showthread.php?121333-30cm-H5-6-Jmagon&highlight=300mm+jmagon



Bernice

[Tin Can]

Post 21 https://www.largeformatphotography.info/forum/showthread.php?121333-30cm-H5-6-Jmagon&p=1233972&viewfull=1#post1233972


Have this six disc versions in 300mm. If interested, possible to put the disc in a scanner to get their hole size and location for replication if interested. This would require some work to get done. Can measure the hole sizes to 0.001" if needed.

https://www.largeformatphotography.info/forum/showthread.php?121333-30cm-H5-6-Jmagon&highlight=300mm+jmagon



Bernice

[Peter De Smidt]

That's a neat lens, Bernice. Personally, though, I'm not a fan of the sink strainer apertures, because out-of-focus highlights can take on their shape, which is very distracting in most pictures that have such highlights.

Here's one with a Fuji SF strainer-style lens:
https://www.dropbox.com/s/zk1dxl4se30j83w/SD_4-0491.jpg?raw=1
For me, it works in this image, but normally it's not a good thing.

[Peter De Smidt]

Bernice, do you have any example pictures with the non-standard disks?

[Bernice Loui]

Going to be a while before I'm able to burn film again due to moving, unpacking and setting Foto stuff up to do this.
Longer term plan is to get a proper darkroom built allowing B&W prints to be made again.. It has been SO long since any of that
could happen.

Tried the "hybrid" film-scan to digits post process, this turned out to be the most un-rewarding method for "me" as the means to create a print.
Got a Epson scanner en all some time ago, the results were SO un-gratifying, SO dis-liked mostly stopped doing this.


Bernice



Bernice, do you have any example pictures with the non-standard disks?

[Peter De Smidt]

No worries, Bernice. I feel that way often, especially about inkjet printing, as I look to the left to see a torn apart printer....and look to the right to see a printer filled with cleaning solution....

[Tin Can]

Bernice,

Very happy to hear you will build a new Darkroom.

We need many here to make that commitment!





Going to be a while before I'm able to burn film again due to moving, unpacking and setting Foto stuff up to do this.
Longer term plan is to get a proper darkroom built allowing B&W prints to be made again.. It has been SO long since any of that
could happen.

Tried the "hybrid" film-scan to digits post process, this turned out to be the most un-rewarding method for "me" as the means to create a print.
Got a Epson scanner en all some time ago, the results were SO un-gratifying, SO dis-liked mostly stopped doing this.


Bernice

[williaty]

Is there a functional difference between using aperture rings as shown here and just closing down the aperture diaphragm (if equipped) on the lens itself?

[Peter De Smidt]

My lens does not have a separate aperture diaphragm. If yours does, and if the diaphragm makes a circular opening, then I would expect similar results.

[Amedeus]

Love my imagons but not using them with the strainers for my typical portrait photography. I'm using either the disks with the peripheral holes closed or use the lens wide open, the latter can be challenging in some light conditions.

My 300mm sits in a Copal 3 shutter, iris there is adequate.

Just my 2 cents,

Cheers,