3D Printed Tak 35mm 2.3 Lens Hood

Qman · 10-05-2019, 10:47 AM - **2 Likes**

I recently purchased a Takumar 35mm f2.3. So far it's lived up to its reputation - beautiful colors, fantastic rendering wide open, and very sharp closed down.
As with all of these early Tak's, they don't do well shooting into the sun since they lack the SMC coatings. This lens is particularly sensitive to flairing because of the rather exposed first element.
There is a lens hood for it, but it is very rare to find one. It screws onto the outside of the lens barrel. You can't use the filter threads to put on a substitute hood because it will cause vignetting.
My solution was to design a new hood and 3D print it. There is a split collar that attaches to the barrel with a small screw. The collar makes it difficult to get that lovely lens cap off, so I put some cut-outs in the sides of the collar. The hood is a bayonet mount that is reversible. Now that precious outer element is protected by the hood, and there are less issues with flare. The only downside is that the lens doesn't fit in its original case with the collar attached. Perhaps I'll design a quick-release collar to deal with that issue. Below are some photos of it on my K-70, and mounted on its contemporary, the Asahi Pentax S. The printed plastic was a shiny black so I've painted it to be more of a matte color.

**Crooski** · 10-05-2019, 11:04 AM

WOW a nice solution !

dan.a.nesheim · 10-05-2019, 11:06 AM

That's the benefit of having a 3D printer and the skills to use it. Nicely done.

**bwgv001** · 10-05-2019, 11:08 AM

interesting solution. Good work.

MikeyBugs95 · 10-05-2019, 11:18 AM

What material did you print this in?

Qman · 10-05-2019, 11:33 AM

Originally posted by MikeyBugs95

What material did you print this in?

It's an ABS material.

**sergysergy** · 10-05-2019, 03:01 PM

That is great!

**Wingincamera** · 10-05-2019, 06:27 PM

I like it, I have been thinking about a 3D printer for a project with my motorcycle. But you gave me another idea, I lost the lens cap for my 20-40 lens. Pentax thinks very highly of this cap, and priced it accordingly.

Kozlok · 10-05-2019, 07:48 PM

I wouldn't think a filter-thread mounted hood would vignette on APS-C? I have this lens and mostly make it flare on purpose, but I've been thinking of getting a screw-on hood. I also only shoot APS-C.

Like this:

Qman · 10-05-2019, 08:52 PM

Originally posted by Kozlok

I wouldn't think a filter-thread mounted hood would vignette on APS-C?

I suspect you're correct. Give it a try and let us know!

---------- Post added 10-05-19 at 08:54 PM ----------

I love some types of flares, but not ones that drop the contrast on the entire image. The hood should help with that problem.

garywakeling · 10-05-2019, 10:00 PM

Any chance of sharing the design or selling a printed one? It looks like an interesting solution
Cheers Gary

Darkover · 10-05-2019, 10:43 PM

Originally posted by Qman

My solution was to design a new hood and 3D print it.

A good job! In these days a photographer can't live anymore without a printer. :-)
I can recomend woodprint (PLA) because it looks like Ikea and it is easy to paint it matt black.

Let me show you an example for a small light.

The next thing on my list will be a holder for 100x100 filter.

Olaf

ZombieArmy · 10-05-2019, 10:48 PM

I'd be super interested in one of these for my 35 f2.3. The flare can be quite bothersome.

Qman · 10-05-2019, 11:14 PM

I could probably print a couple extras and sell them for material cost plus shipping.

ZombieArmy · 10-06-2019, 12:21 AM

Originally posted by Qman

I could probably print a couple extras and sell them for material cost plus shipping.

Yah please let me know if you do that, I will def get one!

10-05-2019, 10:47 AM - 2 Likes	#1
Qman Senior Member Join Date: Jun 2017 Posts: 232	3D Printed Tak 35mm 2.3 Lens Hood I recently purchased a Takumar 35mm f2.3. So far it's lived up to its reputation - beautiful colors, fantastic rendering wide open, and very sharp closed down. As with all of these early Tak's, they don't do well shooting into the sun since they lack the SMC coatings. This lens is particularly sensitive to flairing because of the rather exposed first element. There is a lens hood for it, but it is very rare to find one. It screws onto the outside of the lens barrel. You can't use the filter threads to put on a substitute hood because it will cause vignetting. My solution was to design a new hood and 3D print it. There is a split collar that attaches to the barrel with a small screw. The collar makes it difficult to get that lovely lens cap off, so I put some cut-outs in the sides of the collar. The hood is a bayonet mount that is reversible. Now that precious outer element is protected by the hood, and there are less issues with flare. The only downside is that the lens doesn't fit in its original case with the collar attached. Perhaps I'll design a quick-release collar to deal with that issue. Below are some photos of it on my K-70, and mounted on its contemporary, the Asahi Pentax S. The printed plastic was a shiny black so I've painted it to be more of a matte color.

10-05-2019, 10:43 PM	#12
Darkover Forum Member Join Date: Dec 2016 Posts: 76	Originally posted by Qman My solution was to design a new hood and 3D print it. A good job! In these days a photographer can't live anymore without a printer. :-) I can recomend woodprint (PLA) because it looks like Ikea and it is easy to paint it matt black. Let me show you an example for a small light. The next thing on my list will be a holder for 100x100 filter. Olaf Attached Images

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10-05-2019, 11:04 AM	#2
Crooski Loyal Site Supporter Join Date: Feb 2013 Location: Rozenburg , Zuid-Holland Photos: Gallery Posts: 3,681	WOW a nice solution !

10-05-2019, 11:06 AM	#3
dan.a.nesheim Senior Member Join Date: Jul 2019 Photos: Gallery Posts: 167	That's the benefit of having a 3D printer and the skills to use it. Nicely done.

10-05-2019, 11:08 AM	#4
bwgv001 Site Supporter Join Date: Aug 2015 Location: Alabama Photos: Gallery Posts: 697	interesting solution. Good work.

10-05-2019, 11:18 AM	#5
MikeyBugs95 Pentaxian Join Date: Sep 2017 Location: New York Photos: Gallery \| Albums Posts: 1,206	What material did you print this in?

10-05-2019, 11:33 AM	#6
Qman Senior Member Join Date: Jun 2017 Posts: 232 Original Poster	Originally posted by MikeyBugs95 What material did you print this in? It's an ABS material.

10-05-2019, 03:01 PM	#7
sergysergy Site Supporter Join Date: Jan 2011 Photos: Gallery Posts: 5,171	That is great!

10-05-2019, 06:27 PM	#8
Wingincamera Loyal Site Supporter Join Date: Oct 2012 Location: Pine Haven, Wyoming Photos: Gallery \| Albums Posts: 1,182	I like it, I have been thinking about a 3D printer for a project with my motorcycle. But you gave me another idea, I lost the lens cap for my 20-40 lens. Pentax thinks very highly of this cap, and priced it accordingly.

10-05-2019, 07:48 PM	#9
Kozlok Pentaxian Join Date: Jun 2012 Location: Albuquerque Photos: Gallery Posts: 3,148	I wouldn't think a filter-thread mounted hood would vignette on APS-C? I have this lens and mostly make it flare on purpose, but I've been thinking of getting a screw-on hood. I also only shoot APS-C. Like this:

10-05-2019, 08:52 PM	#10
Qman Senior Member Join Date: Jun 2017 Posts: 232 Original Poster	Originally posted by Kozlok I wouldn't think a filter-thread mounted hood would vignette on APS-C? I suspect you're correct. Give it a try and let us know! ---------- Post added 10-05-19 at 08:54 PM ---------- I love some types of flares, but not ones that drop the contrast on the entire image. The hood should help with that problem.

10-05-2019, 10:00 PM	#11
garywakeling Moderator Join Date: Jul 2011 Location: Melbourne Photos: Gallery \| Albums Posts: 1,759	Any chance of sharing the design or selling a printed one? It looks like an interesting solution Cheers Gary

10-05-2019, 10:48 PM	#13
ZombieArmy Pentaxian Join Date: Jun 2014 Location: Florida Posts: 3,210	I'd be super interested in one of these for my 35 f2.3. The flare can be quite bothersome.

10-05-2019, 11:14 PM	#14
Qman Senior Member Join Date: Jun 2017 Posts: 232 Original Poster	I could probably print a couple extras and sell them for material cost plus shipping.

10-06-2019, 12:21 AM	#15
ZombieArmy Pentaxian Join Date: Jun 2014 Location: Florida Posts: 3,210	Originally posted by Qman I could probably print a couple extras and sell them for material cost plus shipping. Yah please let me know if you do that, I will def get one!