E Dinkla
Lives in
Netherlands
Works as a
Printer
Joined on
Mar 30, 2009
|
Comments
 |  |  |  |  |
| bear in the setting sun by adam1612 from Wild Favourites: your favourite or best | shaving tools by summicron from tools for a task | Aerialist by JeffryZ from People Photography 2022 | Watch out for children playing by Hooyat from Black, Gold or Yellow and Red | Army Navy Basketball During Covid by photoprof from The recent world (2019-2022) has drastically changed |
Though with another goal in mind I also printed a 3D twin lens adaptation for a Sony FF mirrorless about nine months ago. It is correct that there is little depth at the rear to separate the rays of the lenses to form two images. I solved that by adding blinds at the front with a black paint that reflects little light. Works quite well. https://www.dpreview.com/forums/post/64105449
Intended to build my own wigglegram twin lens adapter till I hit on this dpreview item today.
Copal Fit: Looking to the future, they should better also include support of other additional commercial and freeware PP programs like CaptureOne, Darktable etc. The PP market likely will split into what is more affordable for amateurs and the Adobe cloud-based leasing software for professionals. These modules are more targeting the professional market though anyway.
https://phodograf.com/controller-1/
On the to EF mount adapted/converted lenses I add an AF confirmation chip and put the focal length and maximum aperture in that chip. Used with the Sigma MC-11 the focal length is set in the Sony EXIF and with some chips the maximum aperture too. Sony's IBIS acts on that information too. Three 135mm lenses that I have got 134, 135, 136 mm set in their chip based on their slightly different viewing angles. So I know which one was used. I could add the names of the lenses based on that info already in the EXIF (macro?) but do not see it as urgent yet. Chips worked on the Canon camera I had as well.
We can call this one The Emperor's New Rose but will it smell as sweet?
The older Sigma 70mm 2.8 Macro SLR lens was already an optical miracle. It isn't 2.0 like the 65mm Voigtländer so could be more affordable than that lens.
(unknown member): So does Apple own the rectangle and Polaroid own the square? Have I got this right? We need a list of what fundamental properties of nature and what ancient family names for that matter are owned by which corporations nowadays.
Whenever you get the geometry set nowadays or sign your name you are always terrified of breaching copyright.
And T-mobile owns the magenta color
http://forum.luminous-landscape.com/index.php?topic=95208.20
ProfHankD: Nice little project/demo. Foolish me, I would have moved the film plane to focus... the electrowetting is so much cuter. ;-)
I guess Robin de Puy, a rising star in Dutch photography, must have had a good adviser that guided here to this technology. This time at least, not so long ago an article cited her as using a standard lens because it resembled the human eye sight so well, an advice a famous Dutch graphic designer gave here ........
ProfHankD: Nice little project/demo. Foolish me, I would have moved the film plane to focus... the electrowetting is so much cuter. ;-)
The men with the knowledge on electrowetting shown in the video are from my hometown Eindhoven. The company is Liquavista that is a spin-off of Philips, purchased by Samsung at some point and then Amazon. Their main goal is the development of low energy transmissive or reflective display screens. More or less multiple droplets in small bags stacked between foils. An interesting possibility is a reflective CMY(K) screen but RGB , monochrome etc is also possible.
Water as a lens element is not unknown in history, Sutton's wide angle camera had it like described here. You can see it in the London Science museum;
http://www.mhs.ox.ac.uk/about/sphaera/sphaera-issue-no-8/sphere-no-8-thomas-sutton-panoramic-camera-lens/
Lace knitters in Brugge used lamps that had a water bowl as a condensor for the light; https://www.exploratorium.edu/snacks/water-sphere-lens
AbrasiveReducer: Is this new factory in Marly (not Marley) a previously Ilford facility?
It is mentioned here:
http://www.adox.de/Photo/adox-acquires-ilfords-medium-scale-coating-line/
In 2014 Wifag-Polytype already acquired Ilford Imaging patents + hired former Ilford-Imaging chemists, engineers etc.
http://www.wifag-polytype.com/fileadmin/user_upload/press_downloads/2014-05-08_Ilford/PR20140219-Fachpresse-Ilford-E.pdf
The Ilford brand name for inkjet papers is now used by an Australian/Japanese distributor; http://www.amateurphotographer.co.uk/latest/photo-news/ilford-galerie-photo-paper-set-for-1-3m-comeback-6146
Ilford-Imaging was the Swiss split-off of the original Ilford, the UK Ilford film manufacturing plant is owned by Harman Technologies and is still producing Ilford films. The Harman inkjet papers are no longer produced/distributed according recent Hahnemühle news.
Met vriendelijke groet, Ernst
http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
February 2017 update, 700+ inkjet media white spectral plots
Julia Borg: CRI does not characterize LEDs well enough. have you tried measuring SPD?
For a guide on CRI - CQS etc standards:
http://www.olino.org/us/articles/2015/03/07/color-quality-scale-cqs-measuring-the-color-quality-of-light-sources
BTW the Olino.org measurements of lamps give you way more information to draw conclusions on light source characters.
Met vriendelijke groet, Ernst
http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
November 2016 update, 700+ inkjet media white spectral plots
HowaboutRAW: Re, image 8 caption: What are "snow particles"?
Are they a product of nuclear plants? Or coal plants?
Or is it just that a non-native speaker of English wrote the caption?
After reading your explanation and living in The Netherlands at the border of Belgium I will sleep a lot better. Now they only have to sort out the small cracks in the reactor rings :-)
https://en.wikipedia.org/wiki/Nuclear_energy_in_Belgium
Interesting term there; Hydrogen Flakes.
Converted cooling tower:
https://www.wunderlandkalkar.eu/nl
BTW, I guess image 10 shows the top of the floating deck, the gas is underneath that part. Weights on the deck are there to keep the gas pressure at a certain level, main weight is the concrete ring along the wall.
miles green: And what's with the huuge hood on a pancake lens!? Something like the Pentax 21mm limited would have been a much better design.
Yup, the rectangle window sunshade like used on the 21mm would be better. Long ago I have seen a hood like that described as a Meissner Blende but no google confirms that name. I have been experimenting to create shades like that by stacking empty filter rings + a (rounded) rectangle mask in the top one. Plus the possible use of a filter on top of that as there is still a filter thread open then. As I understand it using a filter + the Pentax hood creates some issues.
More or less a true Plasmat lens for FF. I guess that between the first version and this one less than 5 Plasmat designs were introduced for FF, by any company. The Canon EF 40mm 2.8 is more a hybrid Planar/Plasmat. Performance/price wise the Canon is the one to beat. Sure it is another focal length. Small mirrorless cameras, with improved high ISO quality sensors, could use small, slower lenses and by that ask for optical designs like the Plasmat, Heliar and Tessar. The image quality of modern Plasmat + hybrids is probably preferred above the Tessar variations. I guess little optical design changes of the original Summaron could go unnoticed in a lens diagram but show a much better image quality in practice.
http://www.klassik-cameras.de/Canon_Wideangles.html
johnsmith404: Since people were asking, at a CP+ presentation the Sigma CEO has explicity stated that Canon, Tamron and Tokina lenses are not supported by this adapter (the LED shouldn't even turn on).
Depends on a possible agreement with Sony and/or Canon which I doubt exists at all. I guess Sigma has a qualified software department with a thorough knowledge of Sony, Sigma, Canon and Nikon camera protocols based on reverse engineering. They must be aware what is covered in patents too. Metabones and other third party adapter makers were welcome for Sony to establish the FE mount cameras in the market and make the switch for all DSLR customers easier. It becomes something else if a third party lens maker gets an easy entrance. Supporting Sigma + Canon lenses as well on all the focusing features is probably too much asked for happy faces at all the involved marketing departments. Right now Sigma is the winner. Anything beyond is hacker's territory and could be within legal limits or not just.
Met vriendelijke groet, Ernst Dinkla
http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
January 2016 update, 700+ inkjet media white spectral plots
johnsmith404: Since people were asking, at a CP+ presentation the Sigma CEO has explicity stated that Canon, Tamron and Tokina lenses are not supported by this adapter (the LED shouldn't even turn on).
A USB connector and nobody will try to hack more functionality to that adapter? Unlikely.
Met vriendelijke groet, Ernst
http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
January 2016 update, 700+ inkjet media white spectral plots
There is of course a mirrorless solution possible where EF lenses play a role and a smaller than 44mm flange to sensor distance can be created. Sure there are advantages in using a Sony + EF-FE adapter but the total did not reduce the 44mm flange to sensor depth measured from the EF flange. A focal length reducer integrated in the camera can be designed way more optimal to image quality, sensor size, than one that has to function in between existing lens/camera designs both from different manufacturers. Three parties involved right now for that solution. The sensor size does not have to be FF or APS but the size should result from weighing all aspects and sound optical design decisions. It has been on my mind for some time:
http://www.dpreview.com/forums/post/57163063
Met vriendelijke groet, Ernst
http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
January 2016 update, 700+ inkjet media white spectral plots
E Dinkla: Mamiya Six folder camera was probably the first camera with a film plane focusing system. Not AF though but a patent on film plane focusing must have expired, the camera is at least 60 years old.
Ernst Dinkla
The film in that camera moves within the camera body to focus while the lens is a rigid part of the body (though being a folder camera the lens can be folded into the body).
Ernst Dinkla
Mamiya Six folder camera was probably the first camera with a film plane focusing system. Not AF though but a patent on film plane focusing must have expired, the camera is at least 60 years old.
Ernst Dinkla
Good concept for AF in macro work with bellows. Between the camera mount and the bellows after the main focusing has been done manually. Moving the camera instead of the lens. Auto focus stacking should be possible too then, about 4 mm movement I read some weeks ago, DPreview is late with this news. Wonder though whether the M mount side hole is wide enough in that case and I guess there are not that many bellows with M mount at the back. Adding another adapter is not the way to go, so give us the same AF part with a more common bellows mount. If used with auto aperture lenses a wire link from adapter to lens is welcome too. Not impossible as I made one already between an EF-FD adapter and a reversed EF mount macro lens at the other end of an FD bellows. But the adapter should get Sony aperture control then. My DIY work was the reason why I thought a year ago that an AF module between camera and bellows would be handy. Well it is there more or less.
Met vriendelijke groet Ernst Dinkla