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Nikon DK-20C +3.0 Diopter for many Digital SLR's Cameras

SKU: NKDP3N MFR: 2944
$16.95
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Key Features

  • Enhance your Nikon SLR vision with this +3.0 diopter lens for clearer focus!
  • Achieve sharper images; the Nikon diopter corrects vision for optimal photography.
  • This DK-20C diopter ensures comfortable viewing, especially for Nikon AF/MF cameras.
  • Improve focus accuracy; this +3.0 diopter eliminates the need for glasses while shooting.
  • Durable Nikon build quality guarantees long-lasting performance of your camera accessory.
  • Simple to attach, this diopter makes fine-tuning your Nikon SLR camera a breeze!
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Special Order?Estimated to Ship: 08/18/2025
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Questions & Answers

Shopper : Will the Nikon DK-20C Diopter +3.0 fit a D50? I now have a DK-21m on my D50 and it went right on with no trouble.PATRICK P : Hi, Ii think that there's a good chance. It fits on a D80 (which predates the D50, if I'm not mistaken) and on a D5100 - which was introduced after your model. Therefore, it's likely to be the only one which fits models in the recent model line-up. Hope this helps, -- Simon ParryMARK S : I just know it fit my Nikon D7000. Call up Nikon to find out for sure.
Shopper : I need +2.25 correction on my D3100 camera. The manual indicates correction of -1.7 to +.5 Should I buy a +2 or +3 diopter? Also, will it fit on the D3100? I read a review and someone said it needed to be filed down to fit. Thanks in advanceHOWARD G : I bought the +3 diopter to be able to use my D3100 without my glasses. But I still needed my glasses to read the screen anyway. The diopter fits on the camera easily but getting the original eye cup on the diopter is hard. It turned out better for me to use the camera with out the diopter. Don't put the original eye cup on the diopter if you ever want to get it off.NORMAN S : Hi, I would buy a +2.0 and make up the difference with the adjustment on on the camera view finder. Some of those rectangulars are hard to get on the camera. I never would file it, they go on hard some times but they will fit OK.JIM P : The +3 is recommended since - alas - as we grow older, our eyes become more oblate (presbyopia). Yes, it has to be filed a bit, but that's only to make it a bit easier to insert *and* remove if some youngster borrows your camera. The filing is not a necessity and is not difficult to do with an exacto knife.
Shopper : Why Did You Choose This?LAWREENCE S : Cannot focusMARSHALL L : I wear glasses and my eyes are worse than the built in eye piece adjustment. So I need this to give me the ability to see more clearly thru the eye piece.ADAM R : I was having difficulty seeing the complete frame and focus with my glasses on. This sounds like the perfect solutionDAVID F : because I need itPATRICIA L : I wear glasses, but can't square up my composition while wearing them, so a diopter close to my prescription permits me to take my glasses off when composing and focusing. By trying on reading glasses at stores, you can come close to what you need, either a minus or plus magnification. These diopters have a spread of spots that are best for you, adjustable with the camera's built-in adjustment wheel to find your best focus as you look through the finder at info displayed in there.RICHARD B : it’s neededNICHOLAS H : I need itROBERT S : I needed to see more clearly thru the view finder on my Nikon D90. I needed more + Diopter.DAVID G : need helpMICHAEL S R : Nikon recommendationRICHARD C : Couldn't see to focus my D750. Recommended by Ken A at AdoramaJim P : Needed to better focus brackets in the viewfinder.Dennis S : I needed additional adjustment on my D7200 viewfinder.Delores M : Because my new Nikon 5600 offered only a meager increase in adjustable built in diopter and I needed a bit more. This item proved hard to find but perservered until I found it at Adorama and quickly purchased. Happy shopper in MSCONI B : I've had surgery and my vision is still adjusting to it. Additionally, the comments and questions helped me to narrow my choice.NORMAN S : Was used on a Fuji S3

Reviews about this item

Review Summary

2022-01-14T08:34:06

Rated 5 out of 5

Great

What i needed!!!

DAVID G.

2021-11-26T14:22:13

Rated 5 out of 5

Great Product

Exactly what I needed to stop wearing my glasses on photo shoots.

PAUL E.

2021-11-22T07:32:54

Rated 5 out of 5

Works Great

Item just as advertised. Very quick shiping

Paul E.

2020-09-23T08:44:51

Rated 4 out of 5

Diopter Correction Eyepiece

The diopter adjustment worked very well and was easy to install

JOHN J.

2020-08-12T10:24:44

Rated 5 out of 5

Focusing is easier

Since my eye surgery, using my Nikon 7100 has been difficult. This diopter solved the problem.

Susan I.

2019-08-21T10:19:37

Rated 5 out of 5

I'm happy with the Nikon DK-20C +3.0 Diopter

I'm glad these supplementary viewfinder eyepieces exist, in my case a +3.0. Many Nikon cameras short those of us needing viewfinder correction on the plus side. These add-ons make viewing a pleasure without the bother of wearing eyeglasses, which bring their own set of problems when operating the camera. You should remove the viewfinder rubber surround before fitting the diopter. It can't be used with the diopter lens. I highly recommend this inexpensive product unless you're happy wearing glasses while photographing.

Richard T.

2017-06-07T12:40:30

Rated 5 out of 5

eye correction lens

good and worth the investment

John C.

2017-01-22T07:10:47

Rated 1 out of 5

Very misleading

After figuring out that the protective eye piece had to be removed before installing the diopter, the view was so blurry that I had to remove it.

CONI B.

2016-11-18T13:33:26

Rated 4 out of 5

I matched the diopter with my reading glasses but seems to be to strong

Ordering on-line was easy. Shipment was quicker than expected. I matched the diopter with my reading glasses but seems to be to strong. The only disappointing thing is that the rubber eyepiece does not slip into the grove of the new diopter, the grove is smaller that on the original.

Chuck C.

2016-10-19T08:52:29

Rated 4 out of 5

Useful accesory

The original diopter corrector embedded in the camera is almost in the borderline of my sight. So, by using this diopter corrector plus giving it the fine tunning with the camera one my view became a 20! However; I don't like the fact that the rubber viewfinder protector can not be used anymore! Nikon should develop the DK-20C so the rubber protection be use it on it! My 10 cents!

Alfonso C.

2016-09-28T08:10:24

Rated 5 out of 5

If you need it you will like it

I have on on my D7200 and D80. Works well.

Frank E.

2016-09-26T10:23:41

Rated 5 out of 5

Great fix to my camera!!!!!!!!

I purchased an -2 diopter. My glasses were too strong and the negative 2 worked excellent I could use the D7000 diopter adjuster to dial in my correction totally awesome!!!!!!!

PETER P.

2016-08-31T13:28:10

Rated 5 out of 5

Absolutely great

Best thing since poloroid; just kidding, works really well for those of us who are trying to get manually focused while burdened with lousy vision but love photography, should have bought this years ago. Especially useful at longer focal legnths! Mike

Michael M.

2016-05-02T13:33:59

Rated 5 out of 5

Works with D3300

A must if you want to focus through the lens and you're nearsighted like me.

TIMOTHY B.

2016-02-16T15:17:38

Rated 5 out of 5

I use when I wear my contacts

It's like reading glasses - if you need it - get it.

JOSEPH H.

2016-02-16T15:14:30

Rated 5 out of 5

A must if you need

Product as described. Critical as I don't shoot with my glasses on. Ask your eye doctor how much correction you need and get more then use the diopter adjustment. Just wish Nikon made it easy to put these on. They are NOT easy.

JOSEPH H.

2016-02-15T10:03:47

Rated 4 out of 5

Works well, but... eyecup?

The diopter correction eyepiece works well with a new D750. Easy to install / remove and effective as intended. But the eyepiece is similar to some other Nikon corrective eyepieces: It does not accept eyecups (at least, any that I've found - suggestions welcomed). Can be troublesome in bright sunlight. So, just pick your situation in which to use it.

ALLAN J.

2015-04-08T21:00:00

Rated 2 out of 5

Follow order instructions

Can't rate product since I ordered the +2 thinking that was what I needed since my reading glasses are that strenght. Big miss. Not worth the hassle to return because of the price. I will get the right one, once I visit my eye doctor and she tells me what the strenght should be. No problems fitting it into my D5000, the only thing is you will have to McGyver the rubber eye protector that came with the camera, otherwise it does not fit once you put this adapter in

DANIEL C.

2014-01-22T19:00:00

Rated 5 out of 5

Perfect!

It works perfectly with my viewfinder. Now I have to remember to take my glasses OFF! I can live with that.

RAFAEL A.

2014-01-06T19:00:00

Rated 1 out of 5

nikon diopter

It should come with installation instructions

LAWRENCE N.

2013-09-02T21:00:00

Rated 5 out of 5

Needed this

20/20 vision as a young wippersnapper, older than dirt now and this is a neccessity when using the viewfinder!

Tanstaafl

2013-06-18T21:00:00

Rated 5 out of 5

Helps with Near Sighted viewing

Fits directly onto the camera and allows the eye ring to be fitted onto the diopter. Allows me to use the viewfinder without my glasses. You just need to know which strength you need. I asked my optometrist.

PicturePerfect

2013-06-10T21:00:00

Rated 5 out of 5

Excellent Product!

It worked great. I was at the end of my adjustment on the camera, and now somewhere in the middle. I can finally judge focus without using glasses!

WILLIAM V.

2013-04-10T21:00:00

Rated 5 out of 5

Very satisfying

I got a Nikon 7100 — the only SLR I've used since I rented a Nikon and three great lenses for a trip to the Florida Keys in about 1975. I loved shooting that holiday, but have not had an SLR in my hands five times since then. My eyes were very good until I began to age; now I'm 64 and currently trying trifocals. I use +2.5 reading glasses for computer screens, higher for books. With this little lens inserted and a quick adjustment of the camera diopter, the focus through the viewfinder snapped like it had when I was 25. It is an enormous treat — my world is never in focus like this any more. Before the DK-20C arrived, I had the in-camera diopter adjusted to work with the long focal length of my trifocals; that was okay and no doubt I'll shoot that way a lot of times again, but with that setup I had to scan around the edges of the viewfinder to establish framing — and 'right focus' was a little too much hope and too little confidence. There is plainly plenty of room for me to adjust the camera diopter as the months and years pass, so that I feel quite assured that this device will work for me (like this!) for years (or until I lose it and have to get another). The nice way the D7100 puts the shooting controls on the right under hand means that, effectively, once I have located a subject with my glasses on I can inspect it, adjust and shoot, without needing to put them back on. I'm just really happy with this and recommend it highly to someone who has aging eyesight.

GREGORY I.

2013-03-07T19:00:00

Rated 4 out of 5

No more shooting with eyeglasses on!

Best part - is just what my eyes need when not wearing glasses by letting me see more clearly through viewfinder. No fun using the viewfinder with glasses. The not so good part - came partially off when putting camera in bag, and ended up breaking one of the holding arms on the diopter. Now to order another. In fact, ordering 3 more. If you buy - buy extra. But I do highly recommend if you don't like wearing corrective eyeglasses when shooting.

Joe H.

2012-09-13T21:00:00

Rated 3 out of 5

works, but eyecup a problem

I have 2.5 correction glasses so this was necessary to correct the diopter. Easy to install and works, but the eyecup is difficult to re-install after the diopter is installed

Lesatpoint

2012-06-03T21:00:00

Rated 5 out of 5

Worked Great

My eyesight is corrected using monovisison where my left eye is corrected for reading and my right eye is corrected for distance vision. Since I use my left eye with my Nikon D300 viewfinder I needed more correction than the -2.0 diopter adjustment available through the camera viewfinder. The DK20C -2.0 snapped onto my eyepiece giving me a total of -4.0 diopter which was perfect for my needs. Up till now I have struggled with a fuzzy viewfinder view.

Larry

2012-02-15T19:00:00

Rated 3 out of 5

Very tight with D7000

Simple product that works as described, however it was a VERY tight fit with the rubber eyepiece that came with my D7000. I had to file the edges of the diopter for the eyepiece to slip over it. I am not accustomed to using carpentry tools on Nikon products...

ADAM I.

2012-01-29T19:00:00

Rated 4 out of 5

I can see clearly now...(in viewfinder)

My perscription for reading is +2.25 but +1 puts the adjustment just right (for arms length). Glad I didn't buy the +2.

Bruce K.

2011-10-03T21:00:00

Rated 5 out of 5

Near Sighted

If one is nearsighted or farsighted a diopter correction eyepiece for your Nikon is a must. They work! Intallation takes about five seconds and badda-boom it's done.

WILLIAM F.

Designed For Use With:

  • Nikon AF
  • Nikon MF

Need Help?

For any questions about compatibility with this product, call us at 800-223-2500 or you can email us any time.

About Nikon DK-20C

FEATURED REVIEWS

Great for people who wear eyeglasses

By Sharee

I bought this because I was tired of having to deal with looking through the viewfinder of my D300 with my glasses. I was not able to see the whole viewfinder with my glasses on, plus I was scratching up my glasses and it was uncomfortable. Now I can easily take pics without my glasses. I wish I had bought this a long time ago. This is highly recommended to anyone who wears eyeglasses. The only thing that may be a problem is the eyecup for the D300 is a tight fit over the eyepiece.

Great

By DAVID G.

What i needed!!!

Make your photography experience more personalized and precise with the DK-20C +3.0 Diopter for many Digital SLR's Cameras. This high-quality Nikon eyepiece diopter is designed to optimize your SLR viewfinder's sharpness in harmony with your unique eyesight.

Unlike standard eyepieces that come with Nikon SLR cameras, which serve primarily for dust protection, this versatile accessory offers a corrective value of +3.0. This makes it an ideal solution for photographers who require a diopter correction for near-sightedness or far-sightedness.

Each Nikon eyepiece diopter is marked with a numerical value, denoted by a plus or minus sign, allowing you to select the perfect diopter for your vision and camera model. The DK-20C +3.0 Diopter, when combined with the viewfinder's base diopter value of minus one, provides an end-result value that matches your needs. Simply put, if you require a diopter of plus 3, just add this +3.0 diopter to your camera.

This durable Nikon eyepiece diopter is designed to be compatible with a wide range of Nikon AF and MF lenses, making it a versatile addition to your photography equipment. Some Nikon SLR cameras feature built-in adjustable eyepiece correction. For these models, you can use the DK-20C +3.0 Diopter in conjunction with the built-in diopter control, if your vision necessitates that optimum viewfinder sharpness cannot be achieved with the built-in diopter adjustment control alone.

Remember, neutral correction eyepieces do not replace the standard eyepiece. Using a neutral correction eyepiece will adjust the camera's diopter value from minus one to zero. To determine the best Nikon diopter value for you, consult with your ophthalmologist, optometrist, or dispensing optician. They can help you determine your diopter from your corrective prescription when viewing an object at a distance of approximately one meter.

Enhance your photography experience with the DK-20C +3.0 Diopter for many Digital SLR's Cameras, a reliable and affordable solution for personalized viewfinder sharpness.

Nikon DK-20C Features

  • Compatible with D3000, D300S, D3100, D5000, D5100, D7000, D90

Warranty Information

This product has a limited warranty of 12 months.

Key Features

  • Enhance your Nikon SLR vision with this +3.0 diopter lens for clearer focus!
  • Achieve sharper images; the Nikon diopter corrects vision for optimal photography.
  • This DK-20C diopter ensures comfortable viewing, especially for Nikon AF/MF cameras.
  • Improve focus accuracy; this +3.0 diopter eliminates the need for glasses while shooting.
  • Durable Nikon build quality guarantees long-lasting performance of your camera accessory.
  • Simple to attach, this diopter makes fine-tuning your Nikon SLR camera a breeze!