A list for the flange distance for nearly every camera model can be found on wikipedia: https://en.wikipedia.org/wiki/Flange_focal_distance

A diffuser film is a special foil for lighting technology. With it, you achieve an improved light diffusion and light transmission. This makes it possible to achieve various lighting effects that depend on the diffusion of the film, the power of the light source and the position of the light source. In combination with LED light sources, considerable energy savings can be achieved at the same time.

Mounting an objective on to a Canon EOS camera, for Nikon camera, standard dumb extension tube for Nikon camera can be used instead of the one for Canon

Canon EF-M mount — you need three sets of extension tubes and here are details of configuration. With the following configuration, the variable extension needs to extend out about 8 mm.

- three 28-mm segments,- three 14-mm segments,- three 7-mm segments,- one MJKZZ-VLE,- one EOS-M42,- one male lens mount and- one female lens mount.

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Even though Raynox DCR-250 has shorter focal length than most infinite objectives requires, it is often used as tube lens but with reduced magnification than designed for the infinite objective. The actual magnification is calculated as following:

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Nikon F mount — you need one set of extension tubes and here are details of configuration. With the following configuration, the variable extension needs to extend out about 1 mm.

One thing about standard extension tubes without electrical contacts is that they seem all come with three segments of 7 mm, 14 mm and 28 mm long and a 10 mm long female lens mount segment and 5-7 mm male lens mount segment. These segments can be screwed together to form longer length and this is very convenient.

Light diffuser films for LED lighting are made of high-quality materials. The most commonly used products include films made of polycarbonate (PC) and PMMA. Depending on the material, there are different product properties and areas of application. However, all lighting films can be easily punched and cut. We have compiled all the advantages of the individual plastics for you in our corresponding categories. There you will also find information on the respective light transmission and other film properties.

This is shot with Raynox DCR-150 focused onto a building pretty far away. Note, the actual image quality is very hazy, this image was dehazed in Adobe Lightroom. You can see a lot of details — meaning the DCR-150 is at right place from the sensor.

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- three 28-mm segments,- three 14-mm segments,- one MJKZZ-VLE,- one EOS-M42,- one male lens mount and- one female lens mount.

We will be happy to recommend the right product for your project and the light colour used (warm white or cool white). You can buy diffusion films directly cut to size or as complete rolls in various widths. For initial tests or the construction of prototypes, we will be happy to send you samples in DIN A4 format in advance on request.

We offer our opal white diffuser films in various surfaces and thicknesses from 250 µm to 500 µm as roll goods. Depending on the thickness, the roll length of the diffusion film differs. On request, we can cut the rolls for you into rectangular sheets in the format you require. Tell us the format you need and we will send you an offer with an attractive price. You can buy diffusion films from us!  All stocked products we within a few working days. Each product is professionally packed for safe delivery. If you have any further questions about our product range, manufacturers, delivery conditions and all other concerns, we will be happy to advise you.

LED films made of polycarbonate are characterised not only by good impact strength but also by a high temperature resistance. Due to a resistance of - 40 °C to 130 °C, they can be used for demanding applications worldwide. The manufacturers of PC films specify a continuous service temperature of 105 °C. This allows the use of short-term or long-term applications. This allows use at short-term or permanently elevated temperatures for which diffuser films made of other materials are not suitable.

Both Raynox 150 and Raynox 250 have 49 mm female filter thread in front of it and 43 mm male thread at the end. In this blog, I am trying to find a generic solution so that this approach can be used for other type of cameras. I have mentioned that I personally like to use standard “dumb” extension tubes. These are without any electrical contacts for the type of camera we have and convert the extension tube to end with M42. So here is one way of assembling it together with a M42 male thread at the end.

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We offer all film types as non-adhesive products. We do not have a self-adhesive diffuser film in our range. However, we would be happy to name one of our customers who can provide you with self-adhesive diffuser materials.

Obviously, it is very hard to find an extension tube with such exact length, therefore, it is important to have a variable length extension tube. There is ONE important components in above picture: the MJKZZ VLE.

Because Raynox add-on lenses are not designed for photographing alone, most of the time the image will be hazy, so it is better to use the digital zoom feature of your camera to help determining focus. It is also better to do this at night and aim at lights far away.

Same principle as with Raynox DCR-150, it must be placed at EXACTLY its focal length away from camera sensor which is 125 mm away. Since different camera has different flange distance, so extension tube length is dependent on camera type. Here is a table:

The individual diffuser films differ in terms of thickness, colour, light scattering (half-value angle) and transmittance (light transmission). Depending on the application, illuminant, light colour (cold or warm white) and surface, a diffusion films with different light values is recommended. Different types of film and thicknesses can be used to achieve a wide variety of diffusion effects. We will be happy to provide you with the light values for all diffusion films and advise you on your choice. Ultimately, however, you cannot avoid testing with samples to see the light diffusion effect of the respective film with your own eyes. We will be happy to supply you with samples for your components in advance so that you can compare the film types.

- three 28-mm segments,- two 14-mm setments,- one 7-mm segments,- one MJKZZ-VLE,- one Nikon-M42,- one male lens mount and- one female lens mount.

- two 28-mm segments,- one 14-mm segments,- one MJKZZ-VLE,- one EOS-M42,- one male lens mount and- one female lens mount.

To summarize, the key point of using Raynox (or any other dioptor lens) as tube lens is to place it at right distance from camera sensor (not lens mount) using either bellow, extension tubes with variable extension, or any other means. And to determine the right distance is to focus the setup to infinity and obtain a sharp image. Different camera has different flange distance (distance from the sensor to lens mount), so it is not possible to have one set of extension for all cameras, variable extension is highly recommended.

It is rather difficult to place the Raynox add-on lenses EXACTLY by physically measuring the distance because of lack of precise parts available. However, it is rather easy to configure it optically — mounting it onto the camera and try to focus it to infinity. So the best way is to pick something very far away with a lot of texture, adjust the placement of Raynox lens until you get a sharp focus. Here is an example.

Canon EF-M mount — you need two sets of extension tubes and here are details of configuration. With the following configuration, the variable extension needs to extend out about 2 mm.

The Raynox 150 has a focal length of 208.33 mm. What his means is that we need to place it EXACTLY 208.33 mm away from the sensor. For Canon EOS camera with EF mount or EF-S mount, the registered distance is 44 mm (distance from the mount to the sensor plane), this means the total extension tube should be 208.33 – 44 = 164.33 mm in length. For Nikon camera, the registered distance is 46.5 mm, the extension tube length should be 208.33 – 46.5 = 161.83 mm. The same goes with other type of camera mounts.

With long focal length of 208.33mm, the DCR-150 needs long extension length for most camera mounts. Here are some example:

For example, if a 10X objective requires 180mm focal length for tube lens (most Olympus RMS objectives), if it is mounted on to Raynox DCR-250 as tube lens, its real magnification is 10*125/180 = 6.94x

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Opal diffuser films are milky white (opal white) and contain a scattering additive specially developed for this application to ensure uniform light diffusion. When used in backlit components, our diffuser foils provide uniform and homogeneous illumination over a wide area. The lamps and light sources behind them are then no longer visible. The high-performance diffuser films allow different degrees of diffusion. They also offer a high impact strength and excellent temperature resistance for optimised LED lighting. This makes diffuser films the ideal solution for various applications such as spotlights or other light sources. Therefore, they are an enormously important product for the lighting technology and the lamp industry.

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All diffuser films for LED applications can be further processed with suitable accessories. The processing of the films depends on the chosen material. Diffuser films can usually be cut, punched and glued well. Films for light distribution can also be easily screen-printed. Please contact us for further information on printability!

As a specialist for technical films, we offer you numerous products for lighting applications and LED light sources. These are polycarbonate films of the Makrofol ® brand from Covestro and Lexan ® from Sabic. We also offer high-quality PMMA films from Röhm. All our products are available in rolls or directly cut to size into formats.

The above picture shows an example of setting it up for Canon EOS camera, for other cameras, simply use standard dumb extension tube for the camera. Since I have shown you how to put an infinite microscope objective on a standard extension tube (without electrical contacts), now it is important to determine how long the extension tube should be for different cameras.

Canon EF or EF-S mount — you need three sets of extension tubes and here are details of configuration. With the following configuration, the variable extension needs to extend out just a little bit.

Nikon F mount — you need three sets of extension tubes and here are details of configuration. With the following configuration, the variable extension needs to extend out about 7 mm.

Many people started out macro photography with close up add-on lenses, some are cheap and some are not so cheap. One set of well known and widely used add-on lenses are Raynox DC-150 and DC-250. These close up add-on lenses are very convenient to use, simply screw/clip it onto a (usually) telephoto (zoom) lens. The results can be stunning as evidenced by many beautiful images shot with them.

Plexiglas films made of PMMA are ideal for outdoor applications thanks to their high UV resistance. The weatherproof Plexiglas film is the ideal solution for LED lamps for terraces, gardens, balconies or other outdoor applications. PMMA diffuser films are therefore also often used in industry. Examples are backlit displays, light boxes, backlit advertising boards or direct mail.

So theoretically the purpose of tube lens is to focus light beams coming out of microscope objectives onto our DSLR sensor, therefore, it is necessary to position the Raynox (as tube lens) at right position so that its focal plane coincides with the sensor plane. To do this, the Raynox must be placed at its focal length distance from the sensor. For Raynox DCR-150, the focal length is approximately 208.33mm and it should be placed at 208.33mm away from the sensor. Similarly, for Raynox 250, the focal length is 125mm, therefore it must be placed at 125mm away from the sensor plane.

Infinity-corrected objective

With focal length of 125 mm, the DCR-250 needs to be placed at 125 mm away from camera sensor (not from lens mount). Here are some example:

- one 28-mm segments,- one 14-mm setments,- one MJKZZ-VLE,- one Nikon-M42,- one male lens mount and- one female lens mount.

We know that an infinity corrected objective needs another optical piece, called tube lens, to project an image onto a surface, in our case image senor of our DSLR camera. Raynox close up lenses can do just that, projecting light rays onto camera sensor when positioned correctly and it has been proven the results are excellent, even for high end expensive APO objectives. Cool, right!

Our films for light diffusion have an opal white colour and are available in rolls or cut to your desired size. We will be happy to advise you on the right film for your project and application!

The required tube lens focal length varies from different microscope objective manufacturers. Typically microscope objectives from same manufacturer usually require the same tube lens focal length. If you purchase a generic microscope objective, it is best practices to ask your vendor where you purchase it from. Here are some typical tube lens focal length from different manufacturer:

Canon EF or EF-S mount — you need one set of extension tubes and here are details of configuration. With the following configuration, the variable extension needs to extend out about 4 mm.

- one 28-mm segments,- one 14-mm segments,- one MJKZZ-VLE,- one EOS-M42,- one male lens mount and- one female lens mount.

This component allows you to adjust total length of extension so that the Raynox is placed at right position to be used as tube lens — by changing how far the inner ring extends. This components allows you to vary total length between 20 mm to 30 mm, so there should be enough room for different camera mount and Raynox. Of course, it is highly recommended to keep this variable length as short as possible.

Typical applications of our light management films are in the automotive sector and the lighting industry. Our films for light distribution made of polycarbonate or PMMA are also used in the following areas: