“slide projector ASPECTAR 150 A(link)” by Ellront is licensed under (CC BY-SA 3.0)(link) Summary For more information on the adaptation of a projection lens, please refer to the Spiral blog for an introduction to the Diaplan 100mm F3. Meyer Diaplan/Pentacon AV 100 can be found on eBay for only a few tens of euros. If what you use it only at wide open F2.8, the Meyer Diaplan/Pentacon AV 100 projection lens shown below can be a good replacement to the Trioplan 100. The price of the Trioplan 100 is not cheap compared to other old manual lenses. Click here to search for the existing Meyer Trioplan 100/2.8 ( affiliate link) on eBay. The second-hand price for the fat version on eBay ranging from $200 to $500. Meyer Trioplan 100/2.8 Meyer Trioplan 100/2.8 Meyer Trioplan 100/2.8 Meyer Trioplan 100/2.8 Meyer Trioplan 100/2.8 Price and ValueĪccording to a 1954 advertisement by Modern Photography, the Trioplan 100 sold for about US$81 at the time, which is roughly equivalent to $900 in 2022 today. Please visit Flickr for photos with higher resolution. Sample PhotosĪfter we understanding the characteristics of the Trioplan 100, we can make the best from it. The Trioplan 100 has nisen(two lines) bokeh as shown in the image below: the edges of the defocused image of lotus appears as two lines. Meyer Trioplan 100/2.8 rear bokeh with point light source Nisen Bokeh A lens with under-corrected spherical aberrations will not have soup bubble bokeh. Since most modern lenses are designed to have creamy/smooth rear bokeh, most of them have under-corrected spherical aberrations. ![]() Meyer Trioplan 100/2.8 ”glow“ Soap Bubble BokehĪs the spherical aberration of the Trioplan 100 is under-corrected, the rear bokeh of a spot light has a bright/well-defined edge (refer to the photo below), which sometimes referred as soup bubble bokeh. Glow appears at the edge of the object, which looks similar to a lens with a soft white filter. At F2.8, spherical aberrations are under-corrected. The Meyer Trioplan 100mm F2.8(“Trioplan 100”) was designed at a time when the market had not yet begun to widely use high-refractive/low-dispersion glass with rare earth elements. Metal telephoto lens hood attached to Meyer Trioplan 100/2.8 Lens Characteristics Glow For everyday use, it is recommended to have a longer hood as shown below. The photo above shows the effect of fogging caused by flare in an extreme case. As the hood comes with the lens is short, the shading ability is limited. The coatings on early Meyer lens with red “V” logo were light blue in color with limited flare resistance. Flare resistance Flare on Meyer Trioplan 100/2.8 The centre has decent resolution and the edge begin to improve.į5.6: The resolution on the centre are good, the edges are not bad and the corners start to improve.į8-11: Best performing aperture setting. Trioplan 100/2.8 M42 Fat version 15-blade circular aperture Lens sharpnessį2.8: OK resolution at the centre with fuzzy corners.į4.0: Huge improvment in spherical aberration. “ Trioplan N 2.8/100 (Exakta)” by alf sigaro is licensed under CC BY-NC-ND 2.0. This version is more rare than the flat version. The number of aperture blades was reduced to six. Avaible in Exakta and M42(auto or preset). This is the most mass-produced Trioplan 100. ![]()
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