Photography

Questions tagged [optical-coating]

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An optical coating is one or more thin layers of material deposited on an optical component such as a lens or mirror, which alters the way in which the optic reflects and transmits light.

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Do "water repellent" coatings such as the Hoya HD3 or EVO filters prevent condensation/dew?

As asked in the subject — do they help? do they entirely eliminate the problem within "reasonable" humidity levels? In the manufacturer's description, they only emphasize the aspect of being ...
Cal-linux
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-1 votes
3 answers
252 views

Why is anti-reflective coating on front surface of lens or filter? How can it works?

Principle of anti-reflective coating is very simple: thin layer between air and glass returns light wave in opposite phase. Or to be more precise: anti-reflective layer shifts light wave about 1/2 of ...
Ferd
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1 vote
1 answer
258 views

How to remove these marks or stains on the coating caused by fungus?

I have a acquired a mint(almost) Super-Multi-Coated Takumar 135mm f3.5, from the outside the lens body has no signs of usage, no paint chips or stains on the barrel but looking at the optics it has a ...
Jesse Villanueva
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1 vote
2 answers
222 views

Protect action camera lens from water drops

I use a waterproof action camera (GoPro Hero 8 Black, no housing required) for both over and under water shots. Most shots are taken using a remote so I can't really manage the camera when the shot is ...
ixe013
  • 111
4 votes
3 answers
490 views

two identical lenses with different coatings

Me and my friend both own the Nikon 24-70mm F/2.8G lens. When we met today I put my camera on the table next to his. We noticed that the front element of our lenses must have different coatings ...
Arjihad
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1 vote
2 answers
315 views

Why does Canon have Two Kinds of Nanotech Lens Coatings?

Nikon has a single Nano Crystal Coating, while Canon has not only an equivalent coating (Sub Wavelength Coating), but they also have an Air Sphere coating which seems to do much the same thing. Why ...
John Doe
  • 11
2 votes
2 answers
2k views

What is the best way to clean internal lens elements?

I've purchased old nikon ais lens on ebay. It was really cheap. Turns out it has some fungus growing inside. No worries, I take apart and clean. I used rubbing alcohol, 98% solution to clean it. Turns ...
Ruslan
  • 819
0 votes
1 answer
242 views

What coating do old non-HMC Hoya filters have?

Recently I was looking for some used 85A filters to shoot tungsten film outside. My primary consideration are ones made by Hoya because they are good quality, abundant and relatively inexpensive. But ...
lightproof
  • 695
3 votes
2 answers
478 views

Does it make sense for an ND filter to be less reflective on the front than the back?

I recently noticed that my Haida 10-stop ND filter, when viewed from the front, has similar reflection-suppressing behavior as my B+W 2-stop filter (both are multicoated). However, unlike the B+W, the ...
junkyardsparkle
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2 votes
1 answer
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Will a vintage lens with worn lens coating create poor images?

I have a vintage Rolleiflex camera which I want to restore and repair: Xenotar, 2.8, 80mm. The coating on the lens seems to be worn. Will this create poor images?
gvidotto
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5 votes
1 answer
844 views

Can a lens's MgF2 anti-reflective coating be damaged by salt water?

I'm looking to find out if lens MgF2 anti-reflective coating can be damaged if the lens is submerged frequently in the sea water (salt water). Just a clarification. This relates ONLY to lens itself. ...
xbuster
  • 53
1 vote
1 answer
332 views

Which lens coatings reduce internal reflection?

I've used the Pentax Super Takumar 50 f1.4 and love the lens but notices that in certain lightning situations I get a yellow blur in the shape of the a lens blade. Using my hand I can sometimes stop ...
unsignedzero
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7 votes
5 answers
12k views

What happens if anti-reflective coating is fully ruined or removed from lens' most outer surface?

Anti-reflective coating is sensitive to fingertips and extra care is needed when cleaning camera lens. I've heard a couple of stories where a camera owner used some organic solvents and ended up ...
sharptooth
  • 1,059
0 votes
2 answers
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How much have tele-prime lenses improved over the years?

Context I'm considering the Nikon 500mm f4 AIS P lens as a way to get longer reach that's better than my current setup Nikon 300mm f4 AF with 1.4x TC to get birds and related wildlife. I've heard ...
unsignedzero
  • 2,043
6 votes
2 answers
851 views

Do nano coatings actually make a difference?

Nikon famously has "nano coatings" on it's higher ended lens, and many photographers online swear that this visibly improves their images. However, it's not clear what the actual improvement is (...
nbubis
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4 votes
3 answers
995 views

Does white balance totally correct color shift due to lens glass or coating?

I'm about to create custom profiles for my camera and in order to do so I need to shoot pictures of color reference card. I don't really understand the impact of the lens I choose to create the ...
thomas.g
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5 votes
2 answers
956 views

How durable are external lens coatings?

After reviewing some recent pictures, I was a little bit concerned that the image quality of the first lens that I bought (a Pentax FA 35mm f2.0 AL), because back then I was obsessed with keeping the ...
fortran
  • 1,693
3 votes
1 answer
510 views

What are the difference in multi coatings of old lens like m42 lens and modern lens like canon EF-S?

I have some old m42 prime lens like Pentacon Multi-Coated f/2.8 135mm, and modern lens Canon EF-S 18-55 mm and Sigma 70-300 mm. How much is the difference in the multi-coatings of old and modern ...
Nitin Kumar
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1 vote
1 answer
5k views

What is Canon's Super Spectra Coating?

In the Canon EF 25-105mm f/4 L USM IS lens specs, it says that the lens coating is "Super Spectra Coating". What is the Super Spectra Coating and how it differs from other types of coating?
K''
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6 votes
2 answers
2k views

Lenses and Filters: what do the terms Coating, Multi-Coating and Nano-Coating mean?

I see the word "Coating" in different questions (related to lenses and filters). What are Coating, Multi-Coating, and Nano-Coating?
K''
  • 6,457
4 votes
1 answer
268 views

What are the benefits of a multi-coated CP filter over a regular CP filter?

I would like to purchase CP filters for at least 2 of my lenses. I can go with either the lower cost regular CP filter or the HMC Multi-Coated CP filter. THe multi-coated filter is almost double the ...
Jakub Sisak GeoGraphics
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5 votes
2 answers
3k views

Is Fujifilm's "Super EBC" a modern nanocoating?

In the Luminous Landscape review of the Fuji X-Pro1, Nick Devlin notes: ... how else could one read the “Super EBC” labelling on the lens other than as a nod to the company’s [Range Finder] past. ...
mattdm
  • 142k
28 votes
5 answers
17k views

What does a 'nano crystal coat' do on this lens?

The Nikkor 85mm f/1.4G AF-S has a 'Nano Crystal Coat'...what is that and why is it on most of their most expensive lenses? Obviously its a coating and some links seem to indicate it may increase ...
rfusca
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12 votes
3 answers
17k views

What are the real-life benefits of B+W's MRC?

My 24-105L is in the mail, and I'm looking for a filter to protect the front element. I've decided to go with B+W since they seem to have the best quality to match my L lens. I've narrowed it down to ...
roman m
  • 537

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