Question about Mamiya 140mm f/4.5 Lens for RB67

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I own a Mamiya 140mm KL Macro lens. The floating element ring doesn't turn completely. It will turn from the beginning where no extension tubes are used through the extension tube No.1 range to about halfway through the extension tube No. 2 range. It will not go into the range where both extension tubes are used together. It comes to a hard stop at this point. Is there something wrong with the lens or is it a user problem?

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Posted on Jan 02, 2017

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SOURCE: focusing a mamiya k/l lens.how do i use the

Step A. Set the floating element ring to its' infinity position (if you are using extension tubes, this will vary and you must set according to the tubes).
Step B. Focus the camera on your subject.
Step C. Look at the bellows scale on the camera body (it will generally range from 0-40) Important: Don't read the scale akin to the lens you are using. This will make perfect sense, when you examine the bellows. Mentally record this number.
Step D. Adjust the floating element ring to the recorded number.
Step E. Leave the ring on this new setting and re-focus the camera on your subject.
Step F. Make sure the dark slide is removed and capture your photograph. :)
- That's it mate. Not so foreboding, when you

Posted on Mar 18, 2011

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1 Answer

How does one dismantle a mamiya 120mm mf macro f4 lens


Do you have a lens collimator and other equipment necessary to ensure proper alignment when reassembling the lens? If not, then take the lens to a good camera shop and have a properly trained and equipped professional do the job.

Dec 19, 2013 | Mamiya Cameras

1 Answer

Are extension tubes any good?


Extension tubes will not affect the zoom range. They simply allow the lens to focus closer by moving the glass farther away from the film or image sensor. I use them for my own close-up work.

The 18-135mm will let you focus down to 0.45m for a maximum magnification of about 1:4.8. True macro is at least 1:1 (lifesize) so this lens can't really be called a macro.

If you mean the 50mm f/2.5 lens, this will let you get to 1:1.

Oct 24, 2012 | Canon EOS 600D Rebel T3i Digital Camera

1 Answer

When i connect my new stppo macro extension tube my d3000 says no lense connected, please help


Apparently the extension tube doesn't have the circuitry to connect the electronics in the lens to the camera. You will need to use the manual exposure mode, and you will get no exposure metering help from the camera. You can take a picture, review it, and adjust the exposure accordingly.

Jun 24, 2011 | Nikon D3000 Digital Camera

1 Answer

Just bought this lens and the MACRO button doesn't move. is there something I have to do in order to switch it?


You need to zoom past 200mm and then switch it to the macro setting. You will see a mark on the focus ring that you must put the ring past on coming out of macro

May 27, 2011 | Sigma AF 70-300mm f/4.0-5.6 DL Macro Super...

1 Answer

Focusing a mamiya k/l lens.how do i use the floating element ring? thank's


Step A. Set the floating element ring to its' infinity position (if you are using extension tubes, this will vary and you must set according to the tubes).
Step B. Focus the camera on your subject.
Step C. Look at the bellows scale on the camera body (it will generally range from 0-40) Important: Don't read the scale akin to the lens you are using. This will make perfect sense, when you examine the bellows. Mentally record this number.
Step D. Adjust the floating element ring to the recorded number.
Step E. Leave the ring on this new setting and re-focus the camera on your subject.
Step F. Make sure the dark slide is removed and capture your photograph. :)
- That's it mate. Not so foreboding, when you

Dec 12, 2010 | Mamiya K/L 127mm f/3.5 RB Lens

1 Answer

How to use macro with this lens?


http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&fcategoryid=216&modelid=10511
The lens does NOT have a macro feature - the closet focus is 0.35m - 1.15 ft. at the 85mm end
If you want macro a cheap way to do that is to use some extension tubes - these do NOT have glass and often come in a set of three tubes of different thickness - you can achieve better than 1:1 with these tubes

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Apr 08, 2010 | Canon EF-S 17-85MM F/4-5.6 IS USM Lens

1 Answer

Cannot figure out how to take good macro shot with new Tamron len


With an SLR you only get true macro focussing on a lens that has proper macro focussing abilities. Unfortunately in the photogaraphy world, there are a huge number of lenses which claim to have macro ability but are stretching the term far too much.

Strictly speaking, macro means that the lens is capable of producing images on the sensor which are the same size as the actual subject or even bigger, at life size this is described as 1:1 macro. Your Tamron lens is only capable of a maximum 1:3.7 "macro", and that's only at the 200mm zoom setting with the subject no closer than 45cm from the lens. By SLR zoom lens standards, that's actually pretty good, but if you want to go closer and get greater magnification you need to either use a supplementary close-up filter lens or for better optical quality use a set of extension rings. The trade off with close up filter lenses is poor image quality and usually plenty of colour fringing and with extension rings is that if you're using a 2x magnification at 200mm, your f5-ish maximum aperture at 200mm becomes a very dark f10.

The only way to get good macro results is to either use a proper (=expensive) macro lens and excellent lighting, or use extension rings plus a good ring flash unit. However you can improve your macro by investing in a more capable zoom lens with a closer minimum focus distance and a better aperture at the telephoto end of the range. This can be expensive, or you can pick up some very cheap 35mm film SLR lenses. Using an adapter will never allow you to achieve infinity focus on a Canon digital SLR but you can get a close focussing 200mm f3.8 very cheaply. The crop factor of your smaller sensor means it will have the same angle of view as a 310mm lens but the aperture will remain at f3.8. As Canon digital SLR's have the deepest body register (lens to sensor distance) of the current systems then you'll also have the effect of using it on an extension ring. The downside is that you'll have to use the lens in a totally manual mode as no information will be communicated to your camera body. By mounting the lens back to front using a reversing ring you can achieve some really stunning macro magnifications but then you need a tripod, powerful flash and absolutely no wind... There was also a Makinon 80-200mm zoom which sells for next to nothing on auction websites, but it had a macro collar which allowed it to achieve around half size macro (1:2).

Alternatively, if the Fuji still works and does the job just keep it in your camera bag ready for those types of shots. overall, that seems the easiest and best solution unless you really want to get heavily into macro shooting.

I hope that I've helped you, please ask more if there's anything unclear. I've tried to keep a very complicated subject as simple as possible. Please also take a moment to rate my answer.

Mar 05, 2010 | Tamron 28-300mm f/3.5-6.3 DI XR for Canon

1 Answer

I have a RB67 pro SD and just bought a #1 extension tube for it but the lens doesn't want to mount deep enough? What am I doing wrong? I can't close the lock ring.


You might have an earlier rb pro S ( not pro sd ) version.
The later pro sd lenses have a larger diameter rear element.
The rb67prosd extension yube is clearly marked pro sd the older version just has-
mamiya no.1 45mm.

Nov 25, 2009 | Mamiya RB67 Pro SD Medium Format Camera

1 Answer

Fungus inside lens


if it's mild then it won't have any appreciable effect on your photographs, so leave it until it's worse. The fungus can be slowed or killed by sunlight or by exposing the lens element to ultra violet light.

If it's really bad then you have to decide whether it's worth a professional strip down and clean. You'd have realistic two choices: to remove the fungus and replace all lubricants and canada balsam lens cement with modern antifungal equivalents but leave the damaged lens coatings as they are or to do the same and also have affected lens groups replaced with new ones or have the old ones re-coated. The first option is expensive, the second option is very expensive.

Jul 31, 2009 | Mamiya Macro 140mm f/4.5 L-A for RZ67

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