Summer photography season is over

One of summer's best taken with Kodak Portra 800 color negative.

Busy summer is over and equally busy fall season awaits. Activity shifts from photography to film post production and project management.

Theme for this summer was photography in low light using fast Portra 800 color negative film. Image above was taken in June with MD 35-70 f3.5 manual zoom lens. The zoom image quality looks more than adequate. Even more impressive image quality came from classic 58 mm Minolta MC Rokkor-PF f1.4 normal lens.

The 58 mm classic manual focus Rokkor is sharp already at f3.5. This means that together with fast film like Portra 800 hand-held photography is possible in low light. Stopped down aperture produces sharper images than shooting lens wide open.

During the fall season many more images taken with brilliant Portra 800 film will be processed, scanned and displayed.

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Harvesting solar energy

More and more solar panels are harvesting the power of sun and converting it into electricity. During the summer Rokkorlab computers are mostly powered with this small cluster of eight light weight solar panels connected in parallel.

Rather than just buying something from a shop the solar panel was turned into a small technology project to learn how a complete system works and what it could do when put together from individual components.

Eight panels could charge a car battery during the day. Two amps were generated on average - three with precise positioning.

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Shutter and lens mount for Rokkorcam

Altissa Altix camera appears to be the perfect platform for prototyping new Rokkorcam film camera. In the image Tempor leaf shutter can be seen. Mechanical shutter needs no batteries and is positioned correctly in the light path so that Rokkor lenses can be rather easily adapted and tested.

Rather than adapting lens the Altix camera lens mount will be replaced with M42 thread mount. The result depends on the shutter diameter - if it allowed wider than SLR images go through to 45 mm wide film frame.

Can you already see a Rokkor on top of the camera like I do?

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Developing in September

Summer 2018 photography season is over. Film post production and project management continues.

Products and services in development (in order of priority)

Rokkorcam - a new film camera system taking 45 mm wide 16:9 aspect ratio images on standard 135 film
Optical film scanning workbench
Pentax-110 m4/3 adapter with fixed iris
M42 thread mount conversion for Minolta MC Rokkor-PF 58 f1.4
M42 thread mount and Konica AR mount conversion for several Minolta Rokkor lenses
Service and restoration for Minolta MD zoom lenses

Completed products

Minolta-Konica conversion for MD 35-70 f3.5 Macro zoom
Adapter for using Minolta MD 35-70 f3.5 Macro zoom lens with Canon EOS cameras
Restoration of Minolta MC W.Rokkor-SI 28 f2.5 wide angle lens
Manual aperture modification for Vivitar 35ES (Revue 400 SE) pocket rangefinder enabling battery free operation
Fixing Tokina RMC 28 f2.8 stuck iris

Recent articles

  Best from previous seasons (winter 2013-2014) - MC W.Rokkor-HH 35 f1.8 scanned with 5D (film)..

 Making slides from color negative..

  Adapting 5D (digital)..

  Best from last season (summer 2017) - Red dawn with Hexanon AR 40 f1.8 (film)..

  Lens test - Pentax Super-Multi-Coated Takumar 28 f3.5 versus Minolta MC W.Rokkor-SI 28 f2.5 (film)..

  Best from this season (winter 2017-2018) - Minolta-Konica sample image (film)..

  Best from this season (winter 2017-2018) - Hibernating boat with MC Tele Rokkor-PF 100 f2.5 (film)..

Support Film color grading tutorial - adjust shadow saturation..

 Minolta MC Tele Rokkor-PF 100 f2.5 - Lens technical data and sample film image..

  What others shoot - Primotar (flickr)..

  Best from last season (summer 2017) - Bird in sunrise with Hexanon AR 40 f1.8 (film)..

  Best from last season (summer 2017) - Easy to adapt Tokina RMC 28 f2.8 wide angle lens (digital)..

  Best from last season (summer 2017) - Serviced Tokina RMC 28 f2.8 on Canon 5D full frame (digital)..

  Best from last season (summer 2017) - Bad sky day with Vivitar 35ES pocket rangefinder (film)..

  Best from previous seasons (summer 2016) - Spontaneous photography with Vivitar 35ES pocket rangefinder (film)..

  Best from previous seasons (summer 2016) - Action photography with a manual tele lens (film)..

What is Rokkorlab

Rokkorlab is a not-for-profit 3rd sector association for development of photographic and other fine mechanical products and services. A new product or service is first invented and proposed. If there was demand for the product, resources could be pooled to develop prototypes. Finished products could be manufactured on demand and made available to contributing developers. Suitable products could become available for buyers.

3rd sector means independent - the association is not tied to a commercial or other entity. Ideas flow freely. Several technology platforms are in development for prototyping and manufacturing

Are you a developer

Developers often struggle to find the necessary support to create entirely new or improved products. First there must exist an idea. But what then? How to begin to push the idea into a real useful item? This is where a developers' association could enter the picture.

If interested in products or product development, please use contact information