1. Diopter Lens Slots Review
2. Diopter Lens Slots Lens
3. Diopter Lens Slots Online
4. Diopter Lens Slots Free

Diopter or close-up lenses are a good way to add macro / close-up ability to your current photography gear. They work by screwing or clipping on to the front of your camera's lens, and decrease the minimum focusing distance. This allows you to move your camera closer to the subject, and achieve higher magnification photos.

I'm farsighted but can get lenses from reading glasses cheaply. It looks like Fat Shark 5.8 GHz and 2.4 GHz 2010 and Base Edition goggles all have the slots for Fat Sharks optional negative diopter lenses. Diopter or close-up lenses are a good way to add macro / close-up ability to your current photography gear. They work by screwing or clipping on to the front of your camera's lens, and decrease the minimum focusing distance. This allows you to move your camera closer to the subject, and achieve higher magnification photos.

Diopter is a term used to identify the refractive (light bending) capacity of a lens. A higher diopter indicates a higher refractive capacity, and a greater magnification. You can learn more about diopter on Wikipedia. Diopter filters are just like a magnifying glass for your lens. They also shift the minimal focus distance so you can get macro shots without having to use a macro lens. They can be used to increase the magnification of a lens when you need to get really close-up images of small objects. Lenses with a focal length – defined as the distance between the center of a lens and its focal point – of 1 meter (about 39 inches) have a diopter strength of 1. Since diopter strength is based on the inverse of the focal length, a 2 diopter lens is not 2 meters but 1/2 meter, a 3 diopter lens is 1/3 meter and so forth.

Livin' on the edge by Fountain_Head on flickr (licensed CC-BY)

These close-up lenses work with all cameras where the lens has a filter thread. So they will work with virtually all interchangeable lens camera lenses, and most bridge and advanced compact cameras that have built-in lenses. With some cameras that have an integrated lens, you may need to purchase an accessory tube that attaches to the lens to provide a filter thread that the close-up lens can then be screwed into.

Raynox DCR-250 close-up diopter lens - this lens is quite small and uses a clip adapter to attach the camera's lens

If your camera does not have a filter thread, you can still use a close-up diopter filter, just it won't be very convenient. You'd need to hold the close-up lens in front of the camera.

Using a coupled lens as a diopter

Standard photography lenses can also be as diopters by reverse mounting them in front of your camera's lens. Reversing filter rings can be purchased quite cheaply, these have male filter threads on both sides. One side screws into the front of your lens, then the front of the lens that you want to reverse screws onto the other side.

Zoom lens with a reversed 50mm lens mounted in front

However, because of the size of most photographic lenses, this is not very convenient. You are more likely to get vignetting from the reversed lens than a close-up diopter filter, and it makes the whole setup quite heavy and unwieldy.

You can work out the diopter power of the reversed lens by dividing 1000 by the focal length. So, for example, a 50mm lens gives a 1000/50 = +20 diopter. This is a very strong diopter, and gives only a very short working distance.

Zoom lens set to 150mm with a reversed 50mm lens mounted in front - this gives a magnification ratio of around 3:1 (3x lifesize). The reversed lens would cause vignetting when the zoom was set at lower focal lengths.

Magnification and working distance

Close-up diopter lenses are available in a range of different strengths, such as +1, +5, +8 diopters. The higher the number, the greater the magnification the lens will yield.

Diopters work by changing the focusing distance of the lens when it is set to infinity focus. The focus distance can be worked out by dividing 1000mm (1 meter) by the diopter strength. For example, a +8 diopter filter results in a focus distance of 1000/8 = 125mm.

The eyes have it . by graftedno1 on flickr (licensed CC-BY-ND)

This focus distance is not dependent on the lens that the diopter is used with. Any lens set at infinity focus will focus at the focus length of the diopter. It stands to reason then, that diopters work best with longer focal length lenses, e.g. 50mm - 300mm. A 300mm lens used at a focus distance of 125mm (using the earlier example of a +8 diopter) will produce a higher magnification image than a 24mm lens used at a focus distance of 125mm.

To work out the closest focusing distance of a lens + diopter combination, you first need to convert the lens' minimum focusing distance into a diopter power. You can do this by dividing 1000 by the closest focusing distance measured in millimeters. So, for example, a lens that can focus at half a meter gives a diopter of 1000/500 = 2.

You then add this onto the value of the close-up diopter filter. So a 300mm lens focused at half a meter with a +8 diopter lens attached gives a focus distance of 1000 / (8 + 2) = 100mm.

Red Band Eyes (Explored #122) by Yogendra174 on flickr (licensed CC-BY)

The magnification obtainable with a diopter filter can be calculated as the total diopter of lens and diopter multiplied by the focal length of the lens in meters. Using our previous example of a 300mm lens that can focus down to half a meter used with a +8 diopter, this gives (8 + 2)*0.3 = 3. So, this would give a magnification ratio of 3:1, or 3x lifesize.

Using a different example, let's say we have a 24mm lens that can focus down to 20cm. This gives a diopter power of 5 (1000/200). If we use a +8 diopter close-up lens on it, this will give us a magnification of (8 + 5)*0.024 = 0.312, about 1:3 or one third life size. Nowhere near as good as the longer focal length lens.

Coenonympha tullia by zxc6789 on flickr (licensed CC-BY)

So while diopter lenses do let wide-angle lenses focus closer, and achieve higher magnifications than they can normally, they are much more effective with longer focal length lenses.

Vignetting

Another reason why they are best used with longer focal lengths is to avoid vignetting. Diopter lenses are quite thick compared to a standard lens filter. Many of them are also produced in small sizes. For example, the Raynox DCR-250 close-up lens is around 42mm in diameter. On wide-angle to medium lenses this will result in the frame being black round the edges with just a smallish image circle in the middle.

Untitled by { pranav } on flickr (licensed CC-BY)

If you are looking at purchasing a diopter filter, then be sure that it is large enough to work suitably with the lenses you want to use it on. Both Marumi and Canon produce high quality close-up filters that are available in large thread sizes such as 77mm. (Though of course, they cost and weigh more than the same filters in smaller sizes).

Stacking

Diopter lenses can also be stacked. This just adds the diopter powers together. So using stacked +2 and +5 diopter close-up filters on a lens will have the same effect as using a +7 diopter.

Eye Close Up by Robert D Bruce on flickr (licensed CC-BY-ND)

In general it is better to use a single high power diopter (if you can) rather than stacking lower power diopters. The more pieces of glass you put in front of the lens, the more image quality is likely to degrade.

Focusing

Most cameras won't autofocus effectively when using an add-on diopter lens. If your camera allows manual focus, then switch it into manual focus mode.

IMG_3021-A by sandyhd on flickr (licensed CC-BY)

If your camera doesn't have manual focus, check if your camera will allow setting autofocus to some button other than the half-press of the shutter button. This way you won't get the camera trying to autofocus every time you take a shot.

For focusing, you can just move the camera towards the subject until it comes into focus, then press the shutter to take the photo.

If the camera does not allow you to decouple autofocus from the shutter button, then half press for the camera to try (and fail) focusing. Keep the shutter button half pressed, and now move the camera towards the subject until it comes into focus. Fully press the button to take the photo.

the last caterpillar 2010 by Outburner on flickr (licensed CC-BY-ND)

If your camera can autofocus with the close-up diopter attached, then lucky you! 🙂 For cameras with manual focus ability, I would still recommend using manual focus, since it means there is no autofocus delay when taking the photo.

Lens quality

When looking at close-up diopter lenses, it is best to avoid the cheap sets being sold on eBay. Good quality glass costs money. Raynox, Canon, and Marumi all have good quality achromatic close-up lenses for sale. These produce sharp images with very little chromatic aberration.

Olympus MCON-35 achromatic close-up lens

Cheap ebay +1 and +2 diopter lenses stacked - notice the loss of contrast, image softness, and aberrations compared to the more expensive Olympus lens

Depth of Field

Depth of field in close-up and macro photography tends to be very shallow, even when using a small aperture. When using a diopter filter, depth of field can often appear shallower than it does when using alternative methods of obtaining close-up and macro magnifications.

Zoom lens set to approximately 125mm focal length with a +8 close-up diopter filter, Working distance around 12.5cm

50mm lens with 48mm of extension tubes, Working distance around 6cm

Reverse mounted 50mm lens, Working distance around 10cm

As you can see from the above images, depth of field is more compressed when using the longer focal length with a diopter lens. But there is also no light loss from using a diopter. (The photos were all taken using the same exposure settings). This means that for a given exposure, you can use a smaller aperture setting with a diopter lens than you could with a reversed lens or extension.

As before, here's a round up of the main advantages and disadvantages of diopters compared to other methods of macro photography:

• Can be used with any camera or lens, not just for interchangeable lens cameras.
• Depending on filter size and lens there may be vignetting at wider focal lengths.
• Depth of field is more compressed than with other methods of macro / close-up photography.
• Cost is quite a lot less than a new macro lens, though a lot more expensive than a reverse lens adapter.
• No light loss, unlike all other methods of macro / close-up photography.
• Can be used with macro lenses or lenses mounted on extension tubes / bellows to increase magnification even more.
• Small and lightweight.
• Working distance generally larger than using a reversed lens or lens with extension tubes.

1. Great information on diopters, thanks very much.

   If a reversed lens is basically a diopter (50mm = +20), then why is there light loss with the reversed lens? I’m trying to understand the difference in how light travels through a diopter vs. a reversed lens. Would there be a benefit to using a reversed lens together with a diopter for greater magnification, say on a telephoto lens (assuming it would work)?

   I’ve seen people put microscope lenses on the end of telephoto lenses — perhaps a reversed lens would act basically like a low magnification microscope lens?

   I’ve got diopters, extension tubes, a macro lens and have experimented with reversed lenses, but am trying to figure out an optimal setup to go well beyond 1:1 with very sharp results (and a reasonable depth of field).

   Thanks again!

2. Shortly after I got my first DSLR, this article helped me decide on which two-element closeup lens to get so I could take better macro-style photos with my telephoto lens on the trail. It turned out to be the right decision for my needs, and I’ve taken quite a few really great images with it since – even a couple I’ve gotten paid for!
   I just found this again because I’m looking at another purchase and I wanted to run some numbers, and this is once again the best resource I can find on the subject – go figure.
   Thank you so much for everything in here.

Diopters and Macro lens attachments are a nice addition to any cinematographers arsenal. Often overlooked or ignored altogether, diopters and macro lens attachments are a unique way of expanding the capabilities of lenses you may already own or use.

What are diopters?

Diopter filters are just like a magnifying glass for your lens. They also shift the minimal focus distance so you can get macro shots without having to use a macro lens. They can be used to increase the magnification of a lens when you need to get really close-up images of small objects. While not a true macro lens, they are lightweight and quick to use with standard cine matte boxes and filter holders. Diopters come in varying strengths with +1, +2 and +3 being the most common.

The concept of “dioptre” was first introduced by a French Ophthalmologist in 1872. Internationally the word is still spelled “dioptre”, but in the US and some other English speaking countries its spelled “diopter”

The most common type of close-up lens is a plano-convex lens. This lens is flat on one side and convex on the other side. These are relatively simple and cheap to make even in large sizes. The problem is, plano-convex reduce resolution and worst of all, introduce lots of chromatic aberrations. Smaller diameter plano-convex with magnifications as large as +10 are available in the photographic market, however, as I just mentioned image quality penalties are severe. For cinematography, you really don’t want to use anything greater than a +3 diopter. If you want to use something with a greater strength than +3 you should be looking at a macro lens attachment instead.

Lindsey Optics

One company making diopters is California based Lindsey Optics. Lindsey Optics is run by Dwight Lindsey, who has 38 years in the Optics business and was recently C.E.O. of Schneider Optics. Lindsey Optics makes two different types of diopters- the Brilliant² Tray Mount “Close-Up” Lenses and the 138mm Brilliant Diopters – Round Drop-In.

Both the Brilliant² Tray Mount “Close-Up” Lenses and the 138mm Brilliant Diopters (Round Drop-In) come in values of +1/4 diopter, +1/2 diopter, +1 diopter, +2 diopter, and +3 diopter.

The Brilliant Diopters are simple plano-convex magnifying lenses manufactured to the highest standards specifically for cinematography. They fit in cine matte boxes and there are a variety of clamping adapters to attach 4.5″ Round Diopters directly to cine lens barrels.

Each of the close-up lenses has a focal length expressed in millimeters however for convenience the focal length is expressed in “diopters”, which is simply the reciprocal of the focal length in meters. It’s simple to convert from focal length in millimeters to focal length in diopters. The diopter value is the reciprocal of the focal length in meters. So:

1/1 Meter = 1 Diopter
1/0.33 Meters = 3 Diopter
1/2 Meters = 0.5 Diopter
1/4 Meters = 0.25 Diopter

So when used by itself as a single element lens, a close-up lens with a power of +1 Diopter will focus an image at about 1 meter.

These diopters magnify the field of view, ranging from a slight bump in size for small objects if you use a +1/4 diopter, all the way up to a more exaggerated field of vision if a full strength +3 diopter is used. The lenses are constructed from what Lindsey Optics claims to be the “finest” optical glass. They feature broadband, multi-layer, anti-reflection coatings.

Brilliant² Tray Mount “Close-Up” Lenses

Thet Brilliant² Close-Up lens system is built around 138mm diopters that have been permanently mounted in proprietary Brilliant² 4″ x 5.65″ trays. This allows you to easily use them in any matte box that can take 4″ x 5.65″ filters. Using diopters is a nice way of getting closer focus with the lenses you already have without having to purchase a dedicated macro lens or use a more expensive macro attachment lens.

The thing you need to be aware of is that a diopter will only focus your image at a certain distance. It doesn’t work like a dedicated macro lens where you can focus from very close all the way to infinity.

Build quality

The Brilliant² Tray Mount “Close-Up” Lenses are pre-installed in 4″ x 5.65″ trays and they can’t be removed. The trays are really well made and easily slide inside your matte box.

How do they perform?

I tested out the various strengths of diopters in a Bright tangerine Misfit matte box. Now, unlike Macro attachment lenses, the diopters can be used with just about any lens. That’s not to say that they work the same way with every lens. They certainly work a lot better with longer focal lengths or lenses that don’t have a great MOD (Minimum Object Distance).

I found that I was able to get some really nice tight shots without any noticeable effect in sharpness or image quality. Above you can see some frames that I was able to capture with a TLS Morpheus 80-200mm T2.8 PL zoom lens and a Brilliant² Close-Up +3 diopter filter. These are shots that are not normally possible to do with this lens. The Morpheus has a MOD of 4.9 Feet/1.5 Meters. By using a +3 diopter I could reduce the lenses MOD quite dramatically.

138mm Brilliant Diopters (Round Drop-In)

The 138mm Brilliant Diopters (Round Drop-In) are exactly the same, except they don’t come pre-installed in 4″ x 5.65″ trays. These Round Drop-In versions can be used in matte boxes such as the Bright Tangerine Misfit Atom Pola+. If you are using +1 diopters in the Misfit Atom Pola+, one additional 4×4” or 4×5.65” filter can also be mounted into the frame. If you are using a +2 diopter, no additional filters can be mounted due to the thickness of the diopter. A +3 diopter can be used with the Misfit Atom Pola+ using the rubber bellows donut or Black Hole.

I tried out the Lindsey Optics 138mm Brilliant Diopter +1 in the Bright Tangerine Misfit Atom Pola+. This diopter worked really well and it is nice to be able to reduce your lenses close focus ability without sacrificing optical quality. The diopters really make a big difference on longer focal length lenses that traditionally don’t have very good close focus ability.

Prices

Diopter Lens Slots Review

The Brilliant² Tray Mount “Close-Up” Lenses retail for $550 USD and the 138mm Brilliant Diopters (Round Drop-In) are $475 USD.

Macro attachment lenses

Macro Lens attachments don’t have any of the image quality issues that accompany single plano-convex diopters. Macro lenses are every bit as sharp as the cine prime or zoom that you attach it to and don’t exhibit any chromatic aberrations. Lindsey Optics makes a range of these lenses called Brilliant Macro Lens attachments.

Brilliant Macro lenses can be stacked to achieve even greater magnifications, without sacrificing image quality. If you stack a Brilliant Macro Lens +2 and a Brilliant Macro Lens +3, the resulting combination has an optical power equal to +5 Diopter, with very high-quality optical performance.

They can be used with both cine primes and compact zoom lenses. The Brilliant Macro Lens attachments support full-frame optics at up to 36 x 24mm. They can be used on Zeiss, Cooke and Schneider Optics, as well as prime lenses with focal lengths between 50mm and 100mm.

Lindsey Optics Brilliant Macro Lens attachments work with the following lenses:

ARRI/FUJINON Alura Zoom 30-80 (from 50-80mm)
Canon Compact-Servo 70-200 T4.4
Canon Cine-Servo 17-120 (40-120mm)
Canon CN-E 50mm
Canon CN-E 85mm
Canon CN-E 135mm
Cooke 5i 50mm
Cooke 5i 75mm
Cooke 5i 100mm
Fujinon MK 50-135mm T2.9
Fujinon XK 20-120 T3.5 Cabrio Premier (from 50-120mm)
Rokinon Xeen 50mm T1.5
Rokinon Xeen 85mm T1.5
Rokinon Xeen 135mm T2.2
Schneider Cine-Xenar III 50mm
Schneider Cine-Xenar III 75mm
Schneider Cine-Xenar III 95mm
Schneider Xenon FF 50mm
Schneider Xenon FF 75mm
Schneider Xenon FF 100mm
Sigma 50-100 Compact Zoom
Sigma 50mm T1.5
Sigma 135mm T2 S
Sigma 85mm T1.5
Tokina 50-135mm T3 Zoom
Tokina 50mm T1.5
Tokina 85mm T1.5
Leica Summicron-C 50mm
Leica Summicron-C 75mm
Leica Summicron-C 100mm
Leica Summicron-C 135mm
Leica Summilux-C 50mm
Leica Summilux-C 65mm
Leica Summilux-C 75mm
Leica Summilux-C 100mm
Zeiss Ultra Prime 50mm
Zeiss Ultra Prime 65mm
Zeiss Ultra Prime 85mm
Zeiss Ultra Prime 100mm
Zeiss Ultra Prime 50mm LDS
Zeiss Ultra Prime 65mm LDS
Zeiss Ultra Prime 85mm LDS
Zeiss Ultra Prime 100mm LDS
Zeiss CP2 35mm/T2.1
Zeiss CP2 50mm/T2.1
Zeiss CP2 85mm/T2.1
Zeiss CP2 85mm/T2.1
Zeiss CP2 135mm/T2.1
Zeiss CZ 70-200 Compact Zoom

Build Quality

The Brilliant Macro Lens attachments are beautifully made. They come front and rear metal lens caps that screw on.

They certainly have a bit of weight to them. I independently weighed them in at 900 g (31.75 oz). This is something you certainly need to take note of when using a Macro Lens attachment as it is going to add extra weight to your lens and depending on what lens and lens mount you are using, you may have to use a lens support.

How do they attach to a lens?

To attach a Brilliant Macro Lens you need to use a Lens Adapter. The Lens Adapter lets you attach Brilliant Macro Lenses to compatible prime and zoom lenses. Lindsey Optics provides two ways of doing this:

Clamping Adapters: These are for 80mm, 95mm, and 104mm lens barrels

Threaded adapters: These are for 77mm, 82mm, 86mm, 100mm, 105mm, and 112mm lens barrels

If you want to use multiple Brilliant Macro Lenses, you can do so through a Stacking Adapter.

How do they perform?

I tested out the Brilliant Macro Lens attachments on my TLS 80-200/T2.8 Morpheus zoom (which isn’t actually on the list of lenses that work). That lens only has a MOD of 4.9 Feet/1.5 Meters, but if you attach any of the Brilliant Macro Lens attachments you can drastically reduce that distance. By adding an adapter I was suddenly able to increase my lenses versatility and use it for shots that I wasn’t able to previously get.

I also tried them with my Tokina Vista Primes with the use of an M112 Brilliant Macro Adapter. The Macro Adapter screws onto the front of the Tokina Vista Prime.

You screw the Macro lens onto the adapter. This all works seamlessly and everything fits securely.

If you want to stack multiple Micro Lens Attachments you can do so with the Stacking adapter. I tried this out and it works really well. It’s amazing how close you can get a lens to focus by stacking a +3 and a +2 Macro Lens Attachment.

The thing you do need to keep in mind is that by adding the adapter and the Macro Lens you are significantly increasing the size and weight of your lens (especially if you start stacking Macro Lenses). While this isn’t a massive problem, you may need to use longer rods if you are running a matte box.

To my eye and from close examination of the images, the optical quality didn’t seem to be affected in any way when using the Macro Lens attachments. The image still remained sharp and none of the characteristics of the lens were removed or altered. This is a nice aspect of using a macro lens attachment. It allows you to maintain a consistent look across your footage.

Above you can see just how much closer you can make your lens focus when using the adapters. These examples were shot on the Tokina Cinema Vista 105mm T1.5.

The thing you need to be aware of is that a macro lens attachment will only focus your image at a certain distance. It doesn’t work like a dedicated macro lens where you can focus from very close all the way to infinity.

Price

The Brilliant macro Lens attachments are available in strengths of +1.+2, and +3. They retail for $1,500 USD, or a three lens set with a carrying case is available for $4,500 USD.

A steep price to pay

Any type of custom, low quantity optical product is always going to come with a steep price tag. High-quality macro lens attachments and diopters are certainly not cheap, but if you own lenses that cost tens of thousands of dollars then you will probably be able to justify the price.

Diopter Lens Slots Lens

Conclusion

Diopter Lens Slots Online

The Lindsey Optics Brilliant macro Lens attachments are well made and they are optically very good. They are a nice way of increasing the versatility of lenses you already own, but they certainly won’t be for everyone. If you own lenses that only cost a few thousand dollars then it is not really going to make any sense spending almost the same amount on a macro attachment lens. They really only make sense if you want to increase the versatility of expensive lenses you may own or rent. In saying that, the quality of the optics being used is extremely good and you don’t sacrifice any image quality when using them.

The caveat that you really do need to keep in mind is that both the diopters and macro lens attachments only have a quite narrow focus plane and they won’t be as versatile as a dedicated macro lens.

Diopter Lens Slots Free

If you can’t justify the price of a macro attachment lens then a Brilliant² Tray Mount “Close-Up” Lens is a better option. If you already own a matte box this is not a bad option for getting your lenses to focus a little closer.