Mamiya EE Super merit (AKA Mansfield Eye-tronic)

Mamiya made cameras both for themselves and for re-badging by other companies.  This camera is re-badged by the USA company of Mansfield. It is badged as a Mansfield Eye-tronic but is actually a Mamiya EE Super Merit. This model was also available in the USA as a Honeywell Electric Eye 35 and in the UK as the Vulcan.  The camera is well designed and well made as I would expect from the Japanese in 1962 (the year of this model's introduction, in September).  That makes this camera 50 years old (give or take a year) - and it is in very good condition. It all functions as it should, the only real deterioration being the foam light seals - as is usual on Japanese cameras of any age, these are reduced to a sticky goo and I have partially replaced them. The seals I have replaced are the two ends: around the hinge and around the catch. The long seals top and bottom of the back look to be recessed enough not to cause any trouble - I shall see for sure when my test film is completed (12 exposures of Fomapan 200 Creative).

lens: Mamiya-Kominar badged as Mantinar
focal length:  40 mm
apertures: f/2.8 to f/22
focus range: 1 m to infinity
lens fitting: fixed
shutter: Seikosha
speeds: 1/30, 1/60, 1/125, 1/250
flash: PC socket
film size: 35 mm

Front view - lens with a Petri UV filter in place

This camera is about the standard size and weight for a fixed-lens Japanese rangefinder camera of the period. it measures 130 x 60 x 80 mm and weighs xxxg. Of the three Japanese rangefinders I own, this is the most thoughtfully designed. 

The top plate is spare. On the left is the rewind crank which is slightly proud of the top plate when not in use. In the centre is the accessory shoe - a cold shoe as it has no flash contacts. In front of then accessory shoe is stamped the name "Mansfield" - this would say "Mamiya" on a non-re-badged version or "Honeywell" or "Vulcan" for the other brands of re-badged Mamiyas. On the right of the top plate is the frame counter - this counts down to zero so needs to be set at the film length when you load the film. I don't usually bother with frame counters - I just keep using the camera until the increased tension in the film advance tells me the end has come. With this camera it is, if not essential, then very useful to set the frame counter as when the film is finished the film advance lever keeps moving with no change in tension. What this camera does is when the frame counter reaches zero the word "END" appears in the viewfinder. You can keep winding the film and pressing the shutter release but the film is not moving and you are repeatedly exposing the same last frame.

Top view

The front has no surprises. The viewfinder bezel is at the top. This is black plastic with a very worn (on my camera) chrome outline. The viewfinder is slightly to the left of the lens and the rangefinder window is slightly to the right (both as when using the camera).

The viewfinder has bright-lines and the display for the light meter. There are no parallax markings for close-ups as the viewfinder physically moves as you focus the lens. This is quite a sophisticated facility for a mid-range camera. The viewfinder also includes the word "END" when the frame counter reaches zero.

The rangefinder spot is yellow (as is usual) but is an undefined blob which makes using the rangefinder harder than it should be. Having said that, it does work in good light - test photos will tell me how well. Both the light meter and the rangefinder are coupled.

Inside

Below the viewfinder bezel is the shutter assembly. The shutter is made by Seikosha and is a leaf shutter. the camera offers a choice between automatic and manual exposure control. In auto, the required shutter speed is set and the diaphragm set to auto - the camera selecting the aperture. See the notes on the test film to see how well this works. If you want manual control of the exposure, you can set the aperture as well as the shutter speed. the light meter display in the viewfinder will tell you the required aperture for the set shutter speed (the only time you need to look at the light meter display) or you can use a hand-held light meter to gauge exposure (see below where I have tried all three methods on one picture).

back

On the bottom of the shutter housing is the selector for the film speed. this shows the camera's age as it goes as low a 10ASA/11DIN but only as high as 200ASA/24DIN. The lens itself is surrounded in common Japanese fashion with a circular selenium light sensor. This means it is always pointing the same way as the lens and gets covered by any filter used. In turn, this means that no exposure compensation is needed with filters - as good as you can get without TTL metering. Incidentally, selenium means that no battery is required for the light meter to work.

Underside of lens showing DIN/ASA selector

To the right of the shutter housing is the shutter release button. Personally, I do not like face mounted shutter releases but I have to admit that this one is fine in use. There is a screw socket for a cable release but this is on the top plate. On the opposite side of the shutter housing is a PC socket for flash. There is no means of synchronising  the flash so I assume it is intended for FP bulbs or electronic flash.

The back of the camera is very plain - just the viewfinder eyepiece and the film advance lever. Inside, film attachment is very simple and is about the easiest I have ever come across. There is a generously wide slot with a prominent tang to fit into a sprocket hole. Most 35mm cameras have a shaft with top and bottom sprocket wheels. Not here. There is a single large sprocket wheel below the film gate. This does nothing with the back open making it easy to secure the film to the take-up spool - the film advance will keep moving the film without the user having to repeatedly press the shutter release. Once the back is shut, this sprocket wheel will only allow one frame to advance at a time.

Shutter set to shutter priority automatic exposure

The base of the camera is also bare - just the tripod boss (1/4 inch) and the rewind button.

Shutter set to manual exposure.

Test film results.

The results are good. In the pictures, the horizontal bars to be seen in the sky in some pictures are a scanning artefact due to the negatives being a bit thin (i.e. under-exposed). Overall, both focus and exposure are as they should be producing usable negatives. Although not all the negatives have scanned well, they would produce reasonable silver -prints.

Derelict factory, Stamp End, Lincoln

Social housing estate, Lincoln

River Witham, Lincoln

Footpath

 This next photograph is a test of the rangefinder. I focussed on the nearest pale ball on top of the black steel fence. It is not quite in focus - focus being just a bit closer than it should be (look at the black top rail of the fence just this side of the pale ball).

Rangefinder test

Stamp End lock, Lincoln

River Witham, Lincoln

 This is what happens if you continue to take pictures after the film has ended. The camera does nothing to stop you (apart from displaying the word "END" in the viewfinder) and you end up with multiple exposures on one frame.

The last frame of test film - multiple exposure

 These last three show the effects of 1) using automatic exposure, 2) manual exposure using the built-in meter and 3) manual exposure using a separate hand held meter. All three are exposed well enough to be usable with the automatic exposure perhaps being the best exposure. it is a bit surprising that using the built-in meter automatically differs from using the same meter manually, but the difference is there.  This is possibly due the the camera being able to select in-between aperture values while with manual exposure you have to use one of the marked aperture values. The last exposure, using my trusty (and trusted) Ikophot meter is of more concern as it is clearly rather underexposed.

Child's bike - auto exposure

Child's bike - manual exposure using built-in meter

Child's bike - manual exposure using Zeiss Ikon Ikophot hand held meter.

Light (or exposure) meters

Light meters (which are also called exposure meters) are a modern invention and early photographers had to guess their exposures and rely on experience to get it right.  An early system used to make guessing easier was to use the Sunny 16 rule which says:

• "On a sunny day set aperture to f16 and shutter speed to the [reciprocal of the] ISO film speed [or ISO setting] for a subject in direct sunlight." 

 (from Bernhard J. Suess (2003). Mastering Black-and-White Photography, Allworth Communications. ISBN 1-58115-306-6)  So, if you are using Ilford FP4 film, which is ISO 125, on a sunny day you set the aperture to f16 and the shutter speed to 1/125 seconds.  This will generally give you a usable picture even if not a perfectly exposed one.  You do need to be aware that the amount of light on a sunny beach will be more than the amount of light in a sunny field - entirely due to the amount of reflected light.  You can easily adjust either the aperture or the shutter speed to compensate.  You also need to be aware that the amount of light present on a sunny day depends on how close to the equator you are.  A photographer in Norway using the Sunny 16 rule will get a very different result than a photographer in Nigeria would.  I have been trying this Sunny 16 rule out in Lincoln this week and in the middle of the day it produced the same exposure as my Ikophot exposure meter suggested.  By four in the afternoon, the Sunny 16 rule was a whole stop out.

A better system was the extinction meter.  This used a piece of translucent celluloid that was painted black apart from a series of grey numbers.  Each number was printed in a darker shade of grey than the last number.  So, in my Braun Paxette, the number 1 is nearly white and the number 16 is nearly black.  In use, the user looks through the extinction meter and notes the darkest number that is visible.  This number is then looked up in an exposure table to get suitable aperture and shutter speeds.  This picture of my Braun Paxette show one of these tables.  It is set up for 50 ASA (ISO) film and tells you to halve the exposure for 100 ASA film and double it for 12 ASA film (films were much slower then than we are used to now).  This chart refers to 'diaphragm' rather than 'aperture' but it is the same thing.

Extinction meter table on my Braun Paxette

These, although simple and not able to go wrong, had their drawbacks.  They depended on the quality of the eye sight of the user and that is very variable.

The next development was the electronic light meter.  Initially, these had a cell made from selenium that produced a small electrical voltage on exposure to light.  This voltage was then used to move a needle across a scale.  This needle would then point to an arbitrary number that has to be set on a scale.  The scale then indicates a range of appropriate aperture and shutter speeds.  It is tempting to think of these as EV numbers but they are not - at least are not on the three light meters I own.  These worked very well in reasonable light but were poor performers in poor light.  These fell out of fashion and were replaced by CdS meters.  The advantage of selenium meters is that they do not need a battery to work.  A big disadvantage is that they lose sensitivity with time.  Towards the end of their useful life they give a low reading which will eventually cause over-exposed photographs.  For this reason, some people will not use old selenium meters but my old (fifty years old, plus) meters all agree with my modern light meters.

 I suspect that the rate of deterioration depends on how the meter has been stored over the years.  If the meter is in the dark inside a case apart from when actually taking a reading, the deterioration doesn't seem to matter over a period of sixty or so years.

The next development was the CdS meter (Cadmium Sulphide).  These do not produce a voltage on exposure to light but act as a resistor that changes its resistance to electricity on exposure to light.  These always need a battery to work to provide the voltage.  Most modern light meters work this way.  These work in much lower light levels and do not significantly deteriorate with time.  The draw back with these is that battery technology changes and it can be hard (or impossible) to find batteries for older CdS meters.  In particular, mercury batteries are no longer made and the modern equivalents produce a different voltage which alters the accuracy of the meters.

A lot of meters from the 1950s used what are called Exposure Values (EV).  The idea is that you set your shutter to the indicated EV and this sets a combination of shutter speed and aperture.  As you then alter the aperture, the shutter speed will alter in unison - and vice versa.  I like the system but many people do not.

Here is a table of EVs and their associated aperture/shutter speeds:

 

Table 1. Exposure times, in seconds or minutes (m), for various exposure values and f-numbers
EV	f-number
	1	1.4	2	2.8	4	5.6	8	11	16	22
−6	60	2 m	4 m	8 m	16 m	32 m	64 m	128 m	256 m	512 m
−5	30	60	2 m	4 m	8 m	16 m	32 m	64 m	128 m	256 m
−4	15	30	60	2 m	4 m	8 m	16 m	32 m	64 m	128 m
−3	8	15	30	60	2 m	4 m	8 m	16 m	32 m	64 m
−2	4	8	15	30	60	2 m	4 m	8 m	16 m	32 m
−1	2	4	8	15	30	60	2 m	4 m	8 m	16 m
0	1	2	4	8	15	30	60	2 m	4 m	8 m
1	1/2	1	2	4	8	15	30	60	2 m	4 m
2	1/4	1/2	1	2	4	8	15	30	60	2 m
3	1/8	1/4	1/2	1	2	4	8	15	30	60
4	1/15	1/8	1/4	1/2	1	2	4	8	15	30
5	1/30	1/15	1/8	1/4	1/2	1	2	4	8	15
6	1/60	1/30	1/15	1/8	1/4	1/2	1	2	4	8
7	1/125	1/60	1/30	1/15	1/8	1/4	1/2	1	2	4
8	1/250	1/125	1/60	1/30	1/15	1/8	1/4	1/2	1	2
9	1/500	1/250	1/125	1/60	1/30	1/15	1/8	1/4	1/2	1
10	1/1000	1/500	1/250	1/125	1/60	1/30	1/15	1/8	1/4	1/2
11	1/2000	1/1000	1/500	1/250	1/125	1/60	1/30	1/15	1/8	1/4
12	1/4000	1/2000	1/1000	1/500	1/250	1/125	1/60	1/30	1/15	1/8
13	1/8000	1/4000	1/2000	1/1000	1/500	1/250	1/125	1/60	1/30	1/15
14		1/8000	1/4000	1/2000	1/1000	1/500	1/250	1/125	1/60	1/30
15			1/8000	1/4000	1/2000	1/1000	1/500	1/250	1/125	1/60
16				1/8000	1/4000	1/2000	1/1000	1/500	1/250	1/125
17					1/8000	1/4000	1/2000	1/1000	1/500	1/250
18						1/8000	1/4000	1/2000	1/1000	1/500
19							1/8000	1/4000	1/2000	1/1000
20								1/8000	1/4000	1/2000
21									1/8000	1/4000
EV	1	1.4	2	2.8	4	5.6	8	11	16	22
	f-number

To my light meters:

I have four old meters, each of the selenium type.  They are a Weston Master III, a Leningrad 4, a Ikophot and a Bewi Automat.  The Weston does not work - I tried to adjust the zero setting and managed to wreck the meter.  The blame for this lies entirely with me, not Weston’s design or manufacturing standards.

First, the Weston.

This is a Weston Master III

Weston Master III

It is the most complicated meter of the three I have - presumably it will do more than the other two.  The draw backs for me is firstly there is no ASA or DIN setting, it uses instead Weston values which are their own proprietary system. As films do not come with a Weston speed marked on them, it makes it unnecessarily difficult to use.  Secondly, I find the plethora of black and white marking difficult to distinguish.  As I mentioned earlier, I managed to break this meter, so my complaints about it are moot.

Secondly, Leningrad 4:

Leningrad 4

This is much simpler in layout than the Weston and much easier to use.  The needle points at red numbers, these red numbers are then set against a large pointer on the other end of the meter and the aperture/shutter speed combination are read off a black and white scale.  The film speed can be set in either ASA or DIN and will work with modern films with ISO speeds as they are the same as ASA.  A note of caution:  these red numbers are NOT Exposure Values - they seem to be arbitrary numbers and are different to the equivalent numbers on the Ikophot meter.

Thirdly, Zeiss Ikon Ikophot:

Zeiss Ikon Ikophot

This mirrors the Leningrad in as much as the meter needle points to red numbers and the red numbers are then aligned against a red pointer.  The aperture/shutter speed combination is then read off the scale - aperture in black and shutter speed in white on red.  Again, film speed can be set in either ASA or DIN.  A note of caution:  these red numbers are Exposure Values but only for 50 ASA/18 DIN film (I expect 50 ASA/18 DIN was seen as standard by Zeiss Ikon).  It is possible to use them directly on cameras with a EV scale on the shutter, but you will need to adjust for the speed of the film you are using.  This is simple enough - for 100 ASA, 21 DIN film, subtract 1 from the EV; for 200 ASA, 24 DIN film subtract 2 from the EV and for 400 ASA, 27 DIN film, subtract 3 from the EV.

The DIN/ASA scales on this meter are a bit unique.  DIN 21 SHOULD be ASA 100, but it is ASA 80.   I use the DIN exclusively and that works just fine.  I suspect using the ASA scale would also be fine as the difference between 80 and 100 is fairly small (1/3 of a stop).  As DIN is a German standard and Zeiss Ikon are a German firm, I would expect them to get DIN right.

Not cheap - it cost £10/13/5 in 1957 - which was just over an average man's weekly wage (so about £500 in 2013 values).

This is the meter I most often use as it is nicely made, feels good in the hand and produces satisfactory results.  A scanned copy of the Ikophot manual is available for download as is a scanned copy of Zeiss Ikon's 1930s exposure guide.

Lastly, my Bertram Bewi Automat.

Bertram Bewi Automat

This is a German meter (made in West Germany).  Bertram have been making light meters since 1928 . This meter works differently from the meters above.  For one thing, it has a digital read-out rather than an analogue needle pointing to a scale. 

The meter is rather larger than is usual for analogue meter - it measures 90 x 65 x 25 mm not including the activating button.  It is encased in ivory plastic.

 The only control is a ring to set the film speed.  This is calibrated in ranges. For instance, the DIN setting is a range of three numbers - 11-13, 14-16, 17-19, 20-22, 23-25.  That is one stop difference between each range.  Given the exposure latitude of film that is plenty accurate enough.  There are also ranges for ASA and Weston (ASA is the same as ISO and Weston is a defunct film speed system devised by the makers of the Weston series of exposure meters.

Using the meter is also different to analogue meters.  If you point this meter at the scene you intend to photograph, nothing happens.  You need to point the meter, depress the activating button for about three seconds and release.  Once you have done this, the shutter speed scale lines itself up with the aperture scale and you can read off suitable combinations of aperture and shutter speed.

The read out also has exposure values indicated - under L on the aperture scale.  These are adjusted for film speed and can be set directly on an EV enabled shutter.