Showing posts with label yashica. Show all posts
Showing posts with label yashica. Show all posts

Thursday, 14 January 2016

Yashica Minister D


I already have an article on Yashica Minister III rangefinders. This Minister D is clearly from the same stable.

The camera is about the same size to look at  - I suspect the Minister II and D both use the same main casting. The most obvious difference is with the light meter. With the Minister III, the meter cells are selenium cells in a ring around the lens and do not require a battery. The Minister D meter has the sensor on the left edge of the top plate and it does require a battery.

lens: Yashinon 
focal length:  45 mm
apertures: f/2.8 to f/16
focus range: 0.8 m to infinity
lens fitting:  fixed
shutter: Copal SVL
speeds: 1 second to 1/500
flash: PC socket
film size: 35 mm

The camera measures 135 mm long (not including the strap lugs), 85 mm high and 40 mm deep - 75 mm including the lens.
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(C) John Margetts
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The controls are as had become standard on (non-SLR) 35 mm cameras. On the right is the film advance lever. this lever moves through about 120 degrees to advance the film one frame which is easily achieved with one movement of the thumb. Between the film advance lever and the right edge of the top plate is a window to the frame counter. This counter is automatically reset to 'S' when the back of the camera is opened. This is two before the counter shows '1' allowing for the film to be wound on two frames to move the fogged film leader past the film gate once the back is closed.

Just to the left of the film advance lever and slightly in front is the shutter release button. this is chrome plated and is 5 mm is diameter. It is threaded for a standard cable release.

To the left of these three, the top plate is slightly raised. on this raised portion are the light meter display and ASA setting. ASA (effectively the same as ISO) can be set from 10 to 400 - about the range of film speeds available in the early 1960s. the film speed can only be set in ASA numbers - there is no DIN scale - but for those who prefer DIN (me!) there is a ASA/DIN conversion scale on the inside of the back door.

The light meter consists of a window to a black and white scale and a pointer - see forward on how to use it.

Left of the light meter is an accessory shoe - no electrical contacts so a 'cold' shoe. On the far left is the rewind crank. This pulls up to release the film cassette when loading/unloading but plays no part in releasing the back.

The front of the top-plate has the viewfinder window - fairly large at 20 mm by 13 mm - and a small rangefinder window at the end of the 'Minister D' logo. To the right of the viewfinder is the light meter cell. This is circular and is around 5 mm diameter in a 15 mm diameter enclosure.

The lens is central in the Copal SVL shutter. Just to the left of the shutter housing is a PC (Prontor Compur) flash connector.

The base plate is uncluttered. It has a button to release the rewind mechanism, a 1/4 inch UNC tripod boss (the old standard for tripods was 1/4 inch Whitworth which is very close to 1/4" UNC), a battery compartment and then usual Yashica recessed catch for the back. This is marked O-P - 'O' for open and 'P' for closed.

The back of the camera, as well as having the hinged back, has the light meter actuating button, the viewfinder eyepiece and a grey plastic plug. This plug hides the rangefinder adjusting screw. last thing to note is the presence of strap lugs at either end.

The lens is a Yashinon f/2.8, 45 mm lens (actually described on the lens fascia as 4.5 cm as was usual up to the 1940s but was old hat by the 1960s). I am told the lens has five elements in four groups. It is, of course, coated as was usual by the 1960s. The camera focusses by moving the whole lens; this is the high quality method of focusing compared to the cheaper method of just moving the front element of the lens.

The lens is set in a Copal SVL shutter:
S - for flash synchronised
V - for Vorlaufwerk (delayed action)
L - for light value settings

The shutter clearly takes its name from the German Prontor shutters - S, SV and SVS.

The lens can focus down to 0.8 m (2.8 feet) and is coupled to the rangefinder. this camera is now 50 years old and the rangefinder patch is fairly dim. However, knowing this is in the centre of the viewfinder it is not necessary to actually see it. It is still quite easy to the secondary images of strong verticals and so the rangefinder is straight forward to use. On the rear of the top plate is a small (5 mm) grey plastic plug. This is easily removed to reveal a small screw which is used to adjust the rangefinder. This camera seems to be already adjusted correctly. 

Incidentally, it is possible to improve the contrast of dim rangefinder patches. this can be done by inking in a small black circle in the middle of the viewfinder using a Sharpie or such.

Another nice feature with focusing this camera is parallax adjustment. As you focus the camera closer, the bright lines in the viewfinder move progressively to the right and down. You will still get some parallax error in your framing but you should be able to avoid cutting peoples' heads off.

There is a usable range of f stops from f/2.8 to f/16. This couples with shutter speeds from 1 second to 1/500 seconds. With films rated between 100 ISO and 400 ISO there will be few conditions that this camera will not cope with - at least in the UK; Florida beaches might be a problem.

Setting the exposure takes several steps.

1) press the red button on the rear of the top plate to switch on the meter
2) while holding the red button in, note the number the meter needle is pointing to
3) transfer this number to the outer-most ring on the lens/shutter housing

This sets the exposure but to the camera's choice of aperture and shutter speed. To get either the aperture or speed you want requires a fourth step.

4) turn the inner, gnarled, ring until either the aperture you want, or shutter speed, is against the red index mark. Not every aperture or shutter speed will be available for a given LV setting. For instance, with an LV setting of 17 you are stuck with f/16 and 1/500 and at LV 3 you only get shutter speed of 1 second and an aperture of f/2.8.

This is essentially a shutter priority system as altering the LV will alter the aperture, the shutter speed staying constant until the aperture required is outside the available range.

Most Japanese cameras use black foam in the recess the back fits in. this acts as a light seal. Unfortunately, this foam eventually turns to goo which has happened to this camera. Before I can run a test film I need to clean out the remains of the light seals and fit new black foam - easily secured on the Interweb.







Saturday, 4 October 2014

Yashica Minister III


This is a rangefinder camera from Yashica that is pretty standard for its time.  It is almost exactly the same size as Zeiss Ikon's Contessa LKE of the same period and looks very similar as well. It is slightly larger than Voigtlander's Vitomatic II which is slightly earlier.

lens:  Yashinon-DX
focal length:  45 mm
apertures: f2.8 to f22
focus range: 0.8 m (2.6 ft)
lens fitting: fixed
shutter: Citizen
speeds: 1 s to 1/500 s
flash: PC socket
film size: 35mm

The camera is quite heavy - 656g including a 24 exposure cassette of film. This weight is going to tell at the end of a busy day photographing. It is 135 mm long and 85 mm high. The body is 35 mm thick which increases to 85 mm when the lens is included.

Yashica Minister II ((C) John Margetts)
 There are not many controls on this camera - it is entirely manual. On the top plate, starting on the left, is the rewind crank. This also pulls up to release the cassette for loading/unloading. Next to this is the accessory shoe. In flash terms, this is a cold shoe. next to this is the meter dial. This has two components: ASA setting and meter read-out.  ASA can be set between 10 and 400 ASA (new style). Behind this is the read-out for the meter. This gives you EV numbers between 4 and 18. In use, you choose the EV number the needle is pointing to and transfer this number to the outer most ring on the shutter housing. You are quite at liberty to ignore this if you want to - if you are using a hand-held meter, perhaps - or using the flash.

Next in line is the shutter release button, which is towards the front of the top plate. This is a small (by modern standards) chrome plated button, threaded for a standard cable release. Beside this is the film advance lever. Right on the right-hand end of the top plate is the frame counter. This is automatically reset when you open the back and counts up from 1.

The front of the camera has the viewfinder and rangefinder windows and the shutter housing with lens. The viewfinder is quite large and bright and has bright-line frame lines. In the centre of the viewfinder image is the yellow rangefinder spot. This is plenty large enough without getting in the way and is nice and bright. The rangefinder is coupled to the lens.

The shutter is made by Citizen - no model name is given - and it is a leaf shutter. The shutter housing is fairly large and central.  Partly, it looks large compared to Compur and Prontor shutters of the period as it is straight sided rather than stepped. There are three adjustment rings on the housing. The inner most, marked in green, is the focussing ring. This focusses from 0.8 metres to infinity and is marked in both metres and feet. Strangely, there is no pointer for this scale and the pointer position (where the pointer would be if there was one) is well to the right of centre. I suspect the designer thought there was no need for a pointer as the user is intended to use the rangefinder but I would be more comfortable if there was one. 

The outer most adjustment ring, marked in red, is where you set the EV numbers from the light meter. Even though the meter only offers numbers from 4 and higher, the ring is marked for 2. Setting this ring gives the user a range of both shutter speeds and apertures. Once the EV number is set, you can rotate the middle adjustment ring - the shutter speed ring - to change the shutter speed. Doing so also alters the aperture so that the required exposure is maintained. There is no direct method for adjusting the aperture, but there is a small window immediately behind the shutter speed ring showing the set aperture. If you want a particular aperture (which I usually will) you can alter the shutter speed until the desired aperture is displayed in the window.

Minister III - rear view ((C) John Margetts)
On the base of the shutter housing is a small lever which sets the delay timer. Although we are always told not to use this on an old camera, I can report that it works very well on this particular old camera.

In the front of the shutter housing, around the lens, is the light meter sensor. This is a selenium sensor and so needs no battery - there is no problem with this camera of having to find a replacement for an obsolete mercury battery. Many 'experts' will tell you that old selenium meters are too unreliable to be worth using. This is based on the fact that the light sensitive surface deteriorates with time and then gives low readings. While this is true, if the meter has been kept in the dark except when being used the deterioration over 60-odd years is so slight as to present no problems. I have many selenium meters that are 60-odd years old and they all give accurate readings and I shall continue to use and trust them. I doubt those 'expert' who decry using old selenium meter have actually tried using them.

The advantage of having the light meter sensor around the lens is two fold. Firstly, it is always pointing in the same direction as the lens and secondly, if a filter is used, it fits over the sensor and no adjustment of the meter reading is required.

The lens is a Yashinon-DX lens (I do not know the significance of the 'DX'). This lens has five elements in four groups and is reputed to give very good results. The focal length is 45 mm so the angle of view is very close to the human eye and accordingly will give natural looking results. The largest aperture is f2.8 which might not seems to be particularly fast, but, to be honest, I never shoot much wider than f8 so I just do not care that the lens does not go to f2 or f1.8

This camera has a PC (Prontor-Compur) connector for the flash and this is, idiosyncratically, place on the left-hand end of the camera.

The base plate of the camera has the usual tripod boss - this is the 1/4 inch Whitworth thread - and it is placed centrally behind the lens which means the camera will be stable when on a tripod. Also on the base is a recessed button to free the internals for film rewind and, at the opposite end, a recessed button for unlocking the back. I find this hard to use - you need to slide it to one side and then press it in. Perhaps with time I will find it natural, but not yet.

27/10/14

I have now completed my test film and I am quite impressed.  The camera is easy to use - the light meter works well as does the viewfinder.  I had some flare when shooting into the sun but I did not use a lens hood. Generally, the lens has good contrast and colour rendition.

I took the picture of the reed flower to test the lens at maximum aperture.  The flower is nicely sharp and the background not sharp - as I would want it.  These were all taken in October, so not a lot of sun about.

The cathedral from the footbridge over Broadgate, Lincoln.

The Strait, Lincoln


main railway line, Lincoln

Reed flower

Young Love