Mamiya 67 140mm macro technical question

[Allthink]

Hello colleagues
I want to ask, is there a way to set constand aperture closed down(say to f 11) on Mamiya 140mm F-LA macro lens? I want to use it on lensboard, so i want to set it to desired aperture. the aperture preview level on side of batter closes it only when i push it down, but i found no way to close it for permanent.
Also, i got this lens today, and it's new to me, is it supposed to do some noise/click sound when i turn it upside down back and forth? is it ok because of these floating elemetns? I have no other lens that does the clunk sounds when i turn it upside down except this one(except 35mm Sony lenses), but this is my first floating element lens.


in the video at the end i push a little force on this internal barrel of floating element and release. Is this normal behavior? (never had floating element lenses before, just regular ones)

 

[Alexander6x6]

Grab this and thank me later. I would recommend you to send this lens back, because there is nothing inside producing click sound if everything is OK.
It could be the pins of the aperture/shutter control though. You should check it out somehow.

Hartblei DoF Preview Lever Locker Bracket for Mamiya RB / RZ 67 lenses | eBay

Hartblei DoF Preview Lever Locker Bracket for Mamiya RB / RZ 67 lenses.

www.ebay.com

 

[Allthink]

Grab this and thank me later. I would recommend you to send this lens back, because there is nothing inside producing click sound if everything is OK.

Hartblei DoF Preview Lever Locker Bracket for Mamiya RB / RZ 67 lenses | eBay

Hartblei DoF Preview Lever Locker Bracket for Mamiya RB / RZ 67 lenses.

www.ebay.com

Thank you for the link. So without that device, as i understand, it's not possible to close down aperture constantly, right?

About the sound, it's the sound where the floating element comes out and inside, so i thought it's normal behavior of lens. I attach a video, just to demonstrate that this element probably does the sound.

 

[Alexander6x6]

Thank you for the link. So without that device, as i understand, it's not possible to close down aperture constantly, right?

Exactly. The DoF preview lever bracket is the solution for that.

About the sound, it's the sound where the floating element comes out and inside, so i thought it's normal behavior of lens. I attach a video, just to demonstrate that this element probably does the sound.

The lens is definitely broken. Send it back or to repair store. The part of lens is loose.

 

[mpirie]

I would agree with the above.....there is definitely something wrong with that lens.

It sounds like a group of elements has come loose and it's not the floating element. Check the retaining ring inside the rear.

If you're so inclined, you may be able to secure the retaining ring with the correct tools.

Mike

 

[Allthink]

thank you all for your feedback

 

[Allthink]

I would agree with the above.....there is definitely something wrong with that lens.

It sounds like a group of elements has come loose and it's not the floating element. Check the retaining ring inside the rear.

If you're so inclined, you may be able to secure the retaining ring with the correct tools.

Mike

Thanks Mike. I want to ask, is there and alternative to what Alexander6x6 said about how to close down apertrure constantly? on my other lenses of mamiya 127mm and 180mm , i can close down(via 2 ways) and the aperture stays closed down to the wanted one. On this lens, seems like there is not such option, right?
I just wanted to use it on lensplate for cambo actus so i need it to be constantly closed to desired aperture.

 

[Alexander6x6]

Thanks Mike. I want to ask, is there and alternative to what Alexander6x6 said about how to close down apertrure constantly?

To my knowledge there is no alternative. Even Novoflex is including this bracket into its Mamiya 67 set.

Adapter Mamiya RB/RZ67 Lenses w. Aperture Clamp to PRO-Bellows | PROMAM67

to PRO-Bellows Adapter Mamiya RB- and RZ67-lenses to PRO-series bellows-High-precision adapter- incl. Aperture clamp-no information transfer between the lens and bellows unit-Exposure by means of aperture priority mode or completely manual

novoflex.de

on my other lenses of mamiya 127mm and 180mm , i can close down(via 2 ways) and the aperture stays closed down to the wanted one.

You mean the 180mm SOFT, right?

 

[Allthink]

To my knowledge there is no alternative. Even Novoflex is including this bracket into its Mamiya 67 set.

Adapter Mamiya RB/RZ67 Lenses w. Aperture Clamp to PRO-Bellows | PROMAM67

to PRO-Bellows Adapter Mamiya RB- and RZ67-lenses to PRO-series bellows-High-precision adapter- incl. Aperture clamp-no information transfer between the lens and bellows unit-Exposure by means of aperture priority mode or completely manual

novoflex.de

You mean the 180mm SOFT, right?

Yes, i have the SOFT version, it does have lock for aperture. Never tried 180mm regular. on my 127mm i have another trick to close the aperture on rear mount.
So, what about 140mm, no way to do that without specific tool?

 

[mpirie]

I'm only aware of using the depth of field preview for stopping down before firing the shutter, but it's not something i've explored.

Mike