How to store Pentax 67 lens?

s-tet · 06-15-2021, 01:34 AM

Hi,

Here are the common sense tips of how to store lens (https://www.sharkandpalm.com/photography-tips/how-to-store-camera-and-lenses...e-value-high):

1. Store them front-element-side-down.
This will minimize the presence of oil in your aperture blades (which can really gum up the works when you try to change your aperture in the future). This has become less of a necessity with modern autofocus lenses that use less oil in their manufacturing, but it’s better to be safe than sorry.

2. Close aperture rings to the smallest f-stop to reduce tension on the springs.
The springs in your lenses, like any other springs, fatigue over time. To keep your lenses like-new, set them to their smallest aperture (in other words, the highest number on your lens) when you store them. If your lens doesn’t support manual aperture adjustments, just close up the aperture using your camera body before you turn it off.

With regards to entry 2 here is a question:
If an aperture for example needs to be set to 22 (as the smallest one) then is it just enough to turn the aperture ring to 22? That’s it? In such a case the blades don't close down physically to the smallest aperture, they stay hidden.
Or do I need to turn the aperture ring to 22 and then to switch the depth view lever from “auto” to “man” to make the blades close down to the smallest opening?

Your answers are more than welcome.

Gennady

Last edited by s-tet; 06-15-2021 at 04:31 AM.

**othar** · 06-15-2021, 02:51 AM

I guess you can ignore number 2 for preset lenses that have no springs involved in the mechanism.
But for other M42 lenses the springs are only without (or at least reduced) tension when the aperture blades are closed down, so set the mechanism from auto to manual (if possible). You can also use a lens adapter that pushes in the aperture pin to close the aperture (this will of course increase tension on the spring of the pin).
But to be honest I rarely think about something like that with my own lenses and so far everything works fine.

edit: Just realized 67 lenses, not K or M42 lenses. But I guess the technical aspects are compareable

s-tet · 06-15-2021, 04:19 AM

Originally posted by othar

I guess you can ignore number 2 for preset lenses that have no springs involved in the mechanism.
But for other M42 lenses the springs are only without (or at least reduced) tension when the aperture blades are closed down, so set the mechanism from auto to manual (if possible). You can also use a lens adapter that pushes in the aperture pin to close the aperture (this will of course increase tension on the spring of the pin).
But to be honest I rarely think about something like that with my own lenses and so far everything works fine.

edit: Just realized 67 lenses, not K or M42 lenses. But I guess the technical aspects are compareable

Hi Patrick,

Thanks a lot for the comment. Just a quick question about preset lenses - could you please provide more details about them? And any examples of them from the Pentax lens range?

Thank you.

Gennady

**othar** · 06-15-2021, 04:43 AM

Originally posted by s-tet

Hi Patrick,

Thanks a lot for the comment. Just a quick question about preset lenses - could you please provide more details about them? And any examples of them from the Pentax lens range?

Thank you.

Gennady

I was thinking about my Pentacon 4/200 and 4/300 (this lens is a medium format lens when provided with the Pentacon Six lens mount) lenses, Meyer Optik Görlitz 2.8/135 lens and my Helios 44-2 lens (all have the M42 mount).

If I am not mistaken when reading the reviews, I think the SMC Pentax 75mm F4.5 Shift lens for 6x7 is a preset lens.
(SMC Pentax 67 / SMC Pentax-6x7 75mm F4.5 Shift Reviews - 67 Wide-Angle Primes - Pentax Lens Reviews & Lens Database)

There are differences in how a preset lens is built, but the main principle stays the same. There is a video on how it works for the Meyer Optik Görlitz or later Pentacon lenses here:

You Tube

Last edited by othar; 06-15-2021 at 05:00 AM.

s-tet · 06-15-2021, 07:00 AM

Originally posted by othar

I was thinking about my Pentacon 4/200 and 4/300 (this lens is a medium format lens when provided with the Pentacon Six lens mount) lenses, Meyer Optik Görlitz 2.8/135 lens and my Helios 44-2 lens (all have the M42 mount).

If I am not mistaken when reading the reviews, I think the SMC Pentax 75mm F4.5 Shift lens for 6x7 is a preset lens.
(SMC Pentax 67 / SMC Pentax-6x7 75mm F4.5 Shift Reviews - 67 Wide-Angle Primes - Pentax Lens Reviews & Lens Database)

There are differences in how a preset lens is built, but the main principle stays the same. There is a video on how it works for the Meyer Optik Görlitz or later Pentacon lenses here: https://m.youtube.com/watch?v=TTtXvM6vzqI

Well, now it's clear about the preset lens, thank you. Although I'm not sure of whether Pentax 67 lens can be called preset lens because Pentax 67 lens keep aperture fully open and only at the moment of shooting the blades close down according to the preset aperture number (of course there is SMC 120 mm soft lens, which doesn't have those jumping blades).
So, doesn't it mean that Pentax 67 lens with jumping blades have the blade springs that require the set-up as recommended in entry 2 of the initial post, does it?

**othar** · 06-15-2021, 08:40 AM

Originally posted by s-tet

Well, now it's clear about the preset lens, thank you. Although I'm not sure of whether Pentax 67 lens can be called preset lens because Pentax 67 lens keep aperture fully open and only at the moment of shooting the blades close down according to the preset aperture number (of course there is SMC 120 mm soft lens, which doesn't have those jumping blades).
So, doesn't it mean that Pentax 67 lens with jumping blades have the blade springs that require the set-up as recommended in entry 2 of the initial post, does it?

From my quick observation of the review section it appears all Pentax 67 lenses have an automatic diaphragm (except the tilt-shift lens which is a preset lens (only the tilt shift lens is a preset lens) and the soft lens which has a fixed aperture) and therefore might benefit from the setup mentioned, yes

edit: The aperture blades have to be closed down (lens set to "M", not "A") or the springs will still be under full tension though

**RICHARD L.** · 06-15-2021, 08:57 AM

Pentax 645 lenses : the diaphragm remains wide-open when the lens is taken off the body, whether the lens is set on the A position or on any other f/stop position.

Regards

s-tet · 06-15-2021, 09:31 AM

And one more thing about the lens - I checked my DA lens (e.g. DA* 60-250/f4) and found out that whenever the lens is unmounted from the camera then the blades automatically jump to a closed set-up. I presume the latter is the natural in rest set-up of the blades in DA lens. So, the question is what is the natural in rest set-up of the blades in Pentax 67 lens? Shall they need to be kept open or closed down?

hongman · 06-15-2021, 09:31 AM

This is very interesting.. thanks for posting

s-tet · 06-15-2021, 09:35 AM

Thank you for your appreciation. Now it’s essential to find out the truth about how to store Pentax 67 lens correctly.

**RICHARD L.** · 06-15-2021, 10:05 AM

P67 lenses : in "AUTO" mode, the diaphragm remains always open. In "MANUAL" mode, it closes to the aperture set on the aperture ring. (Just checked my P67 100 mm f/4 MACRO lens).

Regards

s-tet · 06-15-2021, 10:07 AM

Originally posted by RICHARD L.

P67 lenses : in "AUTO" mode, the diaphragm remains always open. In "MANUAL" mode, it closes to the aperture set on the aperture ring. (Just checked my P67 100 mm f/4 MACRO lens).

Regards

So, do you mean that for Pentax 67 lens the natural in rest position of blades is "AUTO" mode?

zapp · 06-15-2021, 10:57 AM

Get the lens in your hands and play with it once a month. Keeps lens happy and yourself.

**RICHARD L.** · 06-15-2021, 11:29 AM - **1 Like**

Originally posted by s-tet

P67 lenses : in "AUTO" mode, the diaphragm remains always open. In "MANUAL" mode, it closes to the aperture set on the aperture ring. (Just checked my P67 100 mm f/4 MACRO lens).RegardsSo, do you mean that for Pentax 67 lens the natural in rest position of blades is "AUTO" mode?

Well, well ... This year I purchased a P67 500 mm f/5.6. It looks brand-new despite the fact it was a used model that is at the very least 30 years old. Well, the diaphragm was wide-open and it works wonderfully. It never sticks and works perfectly. At work, we had a 1969 P 6X7 105 mm f/2.4 and it worked perfectly for all this time while being kept in "Auto" mode all its life. I never even thought of putting any of my own lenses in "Manual" mode. I acquired my first P67 lenses in 1991 (late-model 55 mm f/4, late-model 90 mm f/2.8 and late-model 200 mm f/4). So that was 30 years ago, they remained all this time in "Auto" mode and they all work perfectly too. I don't think this is very important IMHO. Shutters shouldn't be left cocked though in film cameras, this is a killer for spring-actuated curtains.

Regards

**gofour3** · 06-15-2021, 02:29 PM

Originally posted by RICHARD L.

Shutters shouldn't be left cocked though in film cameras, this is a killer for spring-actuated curtains.

Yeah that's the only thing I would worry about as well.

Phil.

06-15-2021, 01:34 AM	#1
s-tet Junior Member Join Date: May 2007 Location: Moscow, Russia Photos: Gallery Posts: 30	How to store Pentax 67 lens? Hi, Here are the common sense tips of how to store lens (https://www.sharkandpalm.com/photography-tips/how-to-store-camera-and-lenses...e-value-high): 1. Store them front-element-side-down. This will minimize the presence of oil in your aperture blades (which can really gum up the works when you try to change your aperture in the future). This has become less of a necessity with modern autofocus lenses that use less oil in their manufacturing, but it’s better to be safe than sorry. 2. Close aperture rings to the smallest f-stop to reduce tension on the springs. The springs in your lenses, like any other springs, fatigue over time. To keep your lenses like-new, set them to their smallest aperture (in other words, the highest number on your lens) when you store them. If your lens doesn’t support manual aperture adjustments, just close up the aperture using your camera body before you turn it off. With regards to entry 2 here is a question: If an aperture for example needs to be set to 22 (as the smallest one) then is it just enough to turn the aperture ring to 22? That’s it? In such a case the blades don't close down physically to the smallest aperture, they stay hidden. Or do I need to turn the aperture ring to 22 and then to switch the depth view lever from “auto” to “man” to make the blades close down to the smallest opening? Your answers are more than welcome. Gennady Last edited by s-tet; 06-15-2021 at 04:31 AM.

06-15-2021, 07:00 AM	#5
s-tet Junior Member Join Date: May 2007 Location: Moscow, Russia Photos: Gallery Posts: 30 Original Poster	Originally posted by othar I was thinking about my Pentacon 4/200 and 4/300 (this lens is a medium format lens when provided with the Pentacon Six lens mount) lenses, Meyer Optik Görlitz 2.8/135 lens and my Helios 44-2 lens (all have the M42 mount). If I am not mistaken when reading the reviews, I think the SMC Pentax 75mm F4.5 Shift lens for 6x7 is a preset lens. (SMC Pentax 67 / SMC Pentax-6x7 75mm F4.5 Shift Reviews - 67 Wide-Angle Primes - Pentax Lens Reviews & Lens Database) There are differences in how a preset lens is built, but the main principle stays the same. There is a video on how it works for the Meyer Optik Görlitz or later Pentacon lenses here: https://m.youtube.com/watch?v=TTtXvM6vzqI Well, now it's clear about the preset lens, thank you. Although I'm not sure of whether Pentax 67 lens can be called preset lens because Pentax 67 lens keep aperture fully open and only at the moment of shooting the blades close down according to the preset aperture number (of course there is SMC 120 mm soft lens, which doesn't have those jumping blades). So, doesn't it mean that Pentax 67 lens with jumping blades have the blade springs that require the set-up as recommended in entry 2 of the initial post, does it? Last edited by s-tet; 06-15-2021 at 07:50 AM.

06-15-2021, 08:40 AM	#6
othar Site Supporter Join Date: May 2014 Location: Linz Photos: Albums Posts: 3,098	Originally posted by s-tet Well, now it's clear about the preset lens, thank you. Although I'm not sure of whether Pentax 67 lens can be called preset lens because Pentax 67 lens keep aperture fully open and only at the moment of shooting the blades close down according to the preset aperture number (of course there is SMC 120 mm soft lens, which doesn't have those jumping blades). So, doesn't it mean that Pentax 67 lens with jumping blades have the blade springs that require the set-up as recommended in entry 2 of the initial post, does it? From my quick observation of the review section it appears all Pentax 67 lenses have an automatic diaphragm (except the tilt-shift lens which is a preset lens (only the tilt shift lens is a preset lens) and the soft lens which has a fixed aperture) and therefore might benefit from the setup mentioned, yes edit: The aperture blades have to be closed down (lens set to "M", not "A") or the springs will still be under full tension though Last edited by othar; 06-15-2021 at 08:51 AM.

06-15-2021, 11:29 AM - 1 Like	#14
RICHARD L. Loyal Site Supporter Join Date: Oct 2018 Location: Quebec City, Quebec Posts: 6,582	Originally posted by s-tet P67 lenses : in "AUTO" mode, the diaphragm remains always open. In "MANUAL" mode, it closes to the aperture set on the aperture ring. (Just checked my P67 100 mm f/4 MACRO lens).RegardsSo, do you mean that for Pentax 67 lens the natural in rest position of blades is "AUTO" mode? Well, well ... This year I purchased a P67 500 mm f/5.6. It looks brand-new despite the fact it was a used model that is at the very least 30 years old. Well, the diaphragm was wide-open and it works wonderfully. It never sticks and works perfectly. At work, we had a 1969 P 6X7 105 mm f/2.4 and it worked perfectly for all this time while being kept in "Auto" mode all its life. I never even thought of putting any of my own lenses in "Manual" mode. I acquired my first P67 lenses in 1991 (late-model 55 mm f/4, late-model 90 mm f/2.8 and late-model 200 mm f/4). So that was 30 years ago, they remained all this time in "Auto" mode and they all work perfectly too. I don't think this is very important IMHO. Shutters shouldn't be left cocked though in film cameras, this is a killer for spring-actuated curtains. Regards Last edited by RICHARD L.; 06-15-2021 at 02:14 PM.

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06-15-2021, 02:51 AM	#2
othar Site Supporter Join Date: May 2014 Location: Linz Photos: Albums Posts: 3,098	I guess you can ignore number 2 for preset lenses that have no springs involved in the mechanism. But for other M42 lenses the springs are only without (or at least reduced) tension when the aperture blades are closed down, so set the mechanism from auto to manual (if possible). You can also use a lens adapter that pushes in the aperture pin to close the aperture (this will of course increase tension on the spring of the pin). But to be honest I rarely think about something like that with my own lenses and so far everything works fine. edit: Just realized 67 lenses, not K or M42 lenses. But I guess the technical aspects are compareable

06-15-2021, 04:19 AM	#3
s-tet Junior Member Join Date: May 2007 Location: Moscow, Russia Photos: Gallery Posts: 30 Original Poster	Originally posted by othar I guess you can ignore number 2 for preset lenses that have no springs involved in the mechanism. But for other M42 lenses the springs are only without (or at least reduced) tension when the aperture blades are closed down, so set the mechanism from auto to manual (if possible). You can also use a lens adapter that pushes in the aperture pin to close the aperture (this will of course increase tension on the spring of the pin). But to be honest I rarely think about something like that with my own lenses and so far everything works fine. edit: Just realized 67 lenses, not K or M42 lenses. But I guess the technical aspects are compareable Hi Patrick, Thanks a lot for the comment. Just a quick question about preset lenses - could you please provide more details about them? And any examples of them from the Pentax lens range? Thank you. Gennady

06-15-2021, 08:57 AM	#7
RICHARD L. Loyal Site Supporter Join Date: Oct 2018 Location: Quebec City, Quebec Posts: 6,582	Pentax 645 lenses : the diaphragm remains wide-open when the lens is taken off the body, whether the lens is set on the A position or on any other f/stop position. Regards

06-15-2021, 09:31 AM	#8
s-tet Junior Member Join Date: May 2007 Location: Moscow, Russia Photos: Gallery Posts: 30 Original Poster	And one more thing about the lens - I checked my DA lens (e.g. DA* 60-250/f4) and found out that whenever the lens is unmounted from the camera then the blades automatically jump to a closed set-up. I presume the latter is the natural in rest set-up of the blades in DA lens. So, the question is what is the natural in rest set-up of the blades in Pentax 67 lens? Shall they need to be kept open or closed down?

06-15-2021, 09:31 AM	#9
hongman Veteran Member Join Date: Dec 2012 Posts: 300	This is very interesting.. thanks for posting

06-15-2021, 09:35 AM	#10
s-tet Junior Member Join Date: May 2007 Location: Moscow, Russia Photos: Gallery Posts: 30 Original Poster	Thank you for your appreciation. Now it’s essential to find out the truth about how to store Pentax 67 lens correctly.

06-15-2021, 10:05 AM	#11
RICHARD L. Loyal Site Supporter Join Date: Oct 2018 Location: Quebec City, Quebec Posts: 6,582	P67 lenses : in "AUTO" mode, the diaphragm remains always open. In "MANUAL" mode, it closes to the aperture set on the aperture ring. (Just checked my P67 100 mm f/4 MACRO lens). Regards

06-15-2021, 10:07 AM	#12
s-tet Junior Member Join Date: May 2007 Location: Moscow, Russia Photos: Gallery Posts: 30 Original Poster	Originally posted by RICHARD L. P67 lenses : in "AUTO" mode, the diaphragm remains always open. In "MANUAL" mode, it closes to the aperture set on the aperture ring. (Just checked my P67 100 mm f/4 MACRO lens). Regards So, do you mean that for Pentax 67 lens the natural in rest position of blades is "AUTO" mode?

06-15-2021, 10:57 AM	#13
zapp Pentaxian Join Date: Jul 2011 Posts: 2,385	Get the lens in your hands and play with it once a month. Keeps lens happy and yourself.

06-15-2021, 02:29 PM	#15
gofour3 Site Supporter Join Date: Oct 2008 Location: Vancouver, Canada Posts: 8,091	Originally posted by RICHARD L. Shutters shouldn't be left cocked though in film cameras, this is a killer for spring-actuated curtains. Yeah that's the only thing I would worry about as well. Phil.