OddCameras.com                         Reflx Lab MZ 50 Half Frame

This is a modified half frame version of the Pentax MZ-50. There were very few SLR cameras which could do half frame and they are quite old now. So the Reflx Lab had the good idea to modify a well available standard full frame SLR to half frame. Their choice fell on used Pentax MZ models. These are very light and have autofocus and auto-exposure modes, most are also capable of manual modes. There is a wide range of lenses.

The mod means a new film plane, a modified film advance, frame lines in the viewer and they changed the sometimes frail plastic gearing of the MZ to more solid and reliable metal gearing. The modified cameras come with a one year warranty. You can choose between 6 models: MZ-10, MZ-50, MZ-3, MZ-5, MZ-5n and MZ-7. You can also buy cameras that do 24x24mm square negatives.The website for the modified cameras is here (links open in a new window). You have to pre-order your choice and then they are made. Sometimes they have cameras in stock like my MZ-50.

The model presented here is a half frame modification based on the Pentax MZ-50 model. If you are interested in the full frame version and its history, I have made a page here.


The main features are:

Shutter:
electronic vertical focal plane, speeds: 30s to 1/2000 and B
Automatic exposure with several modes, manual modes with light metering assistance
Focus: automatic or manual
Film speeds: automatic 25-5000 ISO, manual 6-6400
Auto-wind and rewind, mid roll rewind
Dimensions: 135x90x62mm, Weight 360g (body)

Some photos:

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The camera comes in a simple plein brown box.

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Box open.

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Front with body cap.

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Camera, cap taken off. Its all in a very good state.

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Camera back. They chose a date back model.


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Film plane, modified to half frame.

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Camera, 19-35 Soligor zoom lens. This is good choice for half frame. The crop factor is 1.5, so compared to full frame this is a 28-53mm equivalent.

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Camera and lens are quite compact. The lens is prone to flare on its big flat front lens in bright sunshine with backlight. So you better use it with its massive shade and a filter then.

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Camera with a 18-55 Pentax digital lens. This lens would not cover full format. Pentax digital is APS, the same size as half format, so it's perfect for this camera. These lenses are smaller and lighter than full format. Most of them are quite expensive, but this one was an entry level lens, only sold as a pack with a Pentax digital camera.

The grip is a HorusBennu grip attached to a Manfrotto 200PL style quick release plate, a special plate made by HorusBennu for their grips. It allows you to use the camera, with the grip attached, on a Manfrotto RC2 Rapid Connect Adapter.

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Camera and lens are very compact. Seen the 1.5 crop factor, it's 27-83mm equiv.

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Camera with an ultrawide zoom lens, a Sigma 10-20mm
digital lens. This lens would also not cover full format.

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The lens is compact as well, but quite massive with its shade. It's 15-30mm equiv. which is ultawide to very wide.

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Compared to the 18-55mm Pentax lens. The Sigma is significantly more massive.

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5 lenses in comparison. From left, upper row: 80-210 Tamron, 28-80 Pentax, 19-35 Soligor, all full format. Lower row: 10-20 Sigma and 18-55 Pentax, digital APS format.

Lens specifictions at shortest position.
80-210 Tamron: 100x68mm from flange. Weight 337 gr.
28-80 Pentax: 80x63mm from flange. Weight 274 gr.
19-35 Soligor: 68x75mm from flange. Weight 307 gr.
18-55 Pentax digital: 68x63mm from flange. Weight 200 gr.
10-20 Sigma digital: 78x82mm drom flange, Weight 372 gr.

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The 5 lenses again.

I would love the very compact, pancake-like 21mm digital prime lens, but it's way too expensive for my budget...

This is a very light SLR camera with a choice of good lenses that can be bought for cheap. You can also use APS format lenses, they will cover the format as well. There are only a few half frame SLRs, if it comes to auto-focus there is the Yashica Samurai series and this one, no others that I know of.

There are some issues with my camera. There were heavy light leaks, if the camera was carried around in bright sunshine, which came from the film type window.

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I taped the window with black tape and the leaks were gone.

The film gate is not rectangular. It "leans" to the right. It's not much, about half a mm on each side. But in the end you lose one mm of the picture area as it's on both sides.

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Shown on the camera...

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... and shown on the negatives. As you can see, top and bottom differ on a rectangular film cutter.

Spacing is uneven. Two scans from a professional lab (resized here) which scans 2 frames at a time (standard 24x36). They show quite a difference in spacing.

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Largest...

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...and smallest

At the same time you can see the film gate issue. Open the picure in a picture software and try a rectangular selection. You will see that the frame is not really rectangular.

One more issue are the frame lines in the viewer, they are off the real frame.  I had the impression sooner already. So for the next photo I framed the Cologne cathedral exactly between the lines in the viewer.

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The real picture is off center. So I have to keep this in mind and I have to guess...

Reflx Lab promised to solve these issues on future cameras.

Nevertheless I'm quite pleased with this camera. Shipping was fast, cheap and easy. BTW: Reflx Lab makes other interesting products for analog photographers.

Some first pictures taken with the Tamron 19-35mm lens:

https://www.subcompactcam.com/scans/135/1323_reflx/17.jpg
Cologne, St. Pantaleon, portal.

https://www.subcompactcam.com/scans/135/1323_reflx/51.jpg
Cologne, Breslauer Platz, entrance to main railway station.

https://www.subcompactcam.com/scans/135/1323_reflx/59.jpg
Cologne, main railway station.

https://www.subcompactcam.com/scans/135/1323_reflx/61.jpg
Cologne, cathedral, front.

https://www.subcompactcam.com/scans/135/1323_reflx/68.jpg
Cologne, entrance to cathedral, detail.

https://www.subcompactcam.com/scans/135/1323_reflx/73.jpg
Cologne, cathedral, tower.

https://www.subcompactcam.com/scans/135/1323_reflx/74.jpg
Cologne, fountain next to cathedral, detail.

The first film was mainly shot in dull weather. Some photos had faint light streaks which I attributed to the enormous flat front lens of the Tamron. So I bought another lens, a 18-55 Pentax digital lens. This lens would not cover full format. Pentax digital is APS, the same size as half format, so it's perfect for this camera. These lenses are smaller and lighter than full format. Most of them are quite expensive, but this one was an entry level lens, only sold as a pack with a Pentax digital camera.

Some pictures with this lens:


My Cologne veranda in disorder, 18mm...


...and zoomed to 55mm.

The film was shot in extreme sunlight and the camera carried around a lot through the sunshine. When I got the scans, most of the photos had severe light leaks like this:


Cologne Mülheim, Carlswerk. On the film the picture sits vertical of course.

I mmediately suspected the film type window on the back of the camera. So I taped it and shot another film:


Cologne, Breslauer Platz.

All fine on this film except some photos where I lifted the tape to be sure. The window "pre-exposes" the film for the over-next photo. Reflx Lab would of course repair the camera, but I will not send it back as shipping it to China would be extremely expensive and customs are compicated. I can live with a taped window.  


Cologne, St. Andreas.


Cologne, Cathedral workshop. Zoom.

I bought one more lens, a 10-20mm Sigma DC digital lens, an extreme wide angle zoom. This lens would also not cover full format. Pentax digital is APS, the same size as half format, so it's perfect for this camera. Some photos with this lens:


My disorderly Cologne veranda 10mm...


...and 20mm zoom.


Cologne, River Rhine at its lowest level ever.


Cologne, Breslauer Platz, 10mm.


Cologne Cathedral, south facade. The lens has a lot of contrast.


Cologne Cathedral, south facade with a replica of the crane which sat on the unfinished south tower for more than 500 years until 1868. 

If the samples make you want to own the same camera, you can find it here.

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