Questions tagged [filters]

For questions pertaining to photographic filters, which are usually glass or plastic accessories that are either screwed onto the lens or otherwise added in the optical path. Use "effect" or "post-processing" for software-based "digital filters".

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1answer
94 views

Vignetting after using circular polarizer and cokin system

I have Nikon D750 camera with a lens having a focal length from 24-70mm and lens diameter 72mm. I have bought a circular polarizer and Cokin P system filters with a wide-angle filter holder. But there ...
4
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3answers
349 views

In-body neutral density (ND) filters?

Neutral density filters are apparently widely used across multiple fields e.g. for shallow depth of field in bright light portraiture, long exposure landscapes, and maintaining shutter angle in video/...
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1answer
74 views

How can I clean a B+W polarizing filter that has become so stiff that it's basically unusable?

I have a B+W Filter 77mm HTC Cirular Polarizer Nano KAESEMANN XS-Pro MRC. It has become so stiff to rotate that I basically can't use it anymore. I'm assuming some dirt has gotten into the threads. ...
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3answers
89 views

Monochrome filter effect on color film?

I recently an old Canon O1 orange filter. According to the pamphlet on the filter, it says it works on monochrome film with a filter factor of 3x. What effect would this filter give me on color film? ...
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1answer
59 views

Kodak Retina IIS filter thread

I've inherited a Retina IIS, which is the fixed-lens variant of the more common IIIS. I've not been able to find a manual for it, although the IIIS's manual is fine for almost everything. What that ...
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1answer
118 views

Etching a ND filter to reduce OD

What is the most common absorbing material used for professional quality ND filters, and can that material be etched away with acids or bases, while leaving the substrate (BK-7?) intact? Basically, ...
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6answers
667 views

Does a large scratch in an ND filter affect image quality?

I noticed a used 10-stop ND filter for sale, at exactly the size I want, at a price of 15% of a new filter, except with shipping it's 21% of the price of a new filter with shipping. The catch? It has ...
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0answers
34 views

Are any common (optical) filters useful to attenuate overwhelming blue spotlights in live music situations?

Strong blue spotlights as typically used on outdoor stages are often so physically bright (which I guess they have to be, given how viewers perceive blue as very dark) that they provoke channel ...
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1answer
695 views

Can the front glass on a broken lens be repaired?

I just newly broke this glass on my lens tonight. Wondering if I need to buy a new lens or if I can repair this. It is a Canon EF 85mm f/1.8 USM. This is my favorite lens to use for portraits!
2
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2answers
131 views

Why does 5DSR have a low pass filter?

I have learned it has a low pass filter cancelling filter instead of not having a low pass filter. Why add an another anti alias filter to cancel instead of simply removing it? How does the dual ...
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1answer
441 views

What is this Mirror-like object before the lens on this industrial camera? [closed]

I have industrial camera. Its model is BFLY-23S6M as depicted below. This camera is used for license plate recognition. A 850nm infra-red projector is near the camera. As I know it is better to ...
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2answers
302 views

Do I have to buy filters to control contrast in multigrade papers?

I am interested in buying one of Ilford multigrade papers, e.g. https://www.ilfordphoto.com/multigrade-fb-classic-glossy-sheets I have old small-format enlarger and I wonder if I could achieve ...
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1answer
104 views

How can I disassemble / repair a CPL (Circular Polarizing Filter)?

One of my circular (rotating) polarizing filters has a big hair between the two lenses. The hair moves around and I always have to shake it aside until it's out of sight. Similar to this How would I ...
3
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3answers
550 views

Can you replicate the look of orthochromatic film with a blue filter on panchromatic film?

Going back in time, films used to respond to a more limited range of the visible light spectrum. These orthochromatic films, unlike today's more common panchromatic films, were very sensitive to blue ...
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8answers
2k views

What is a good example for artistic ND filter applications?

Perhaps one of the most iconic uses for an ND filter is using it outside with a slow shutter speed to catch a motion blur effect -- suppose mover water (waterfall, river, creek, ect). So I'm familiar ...
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5answers
115 views

How to decide which lens to buy ND filter for? [duplicate]

I am an amateur photographer, I have Nikon D7500 and three lenses, which are: 1) 10-20mm wide-angle lens (f4.5-5.6) - filter attachment size: 72mm 2) 35mm f1.8 - filter attachment size: 52mm 3) 18-...
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2answers
75 views

Metering on a Zenza Bronica with ND-Filter

I have recently acquired a 10-stop ND filter for my Bronica ETRS, but I have run into a problem while metering. I use the Bronica with the AE-II prism viewfinder with integrated light-meter, and so ...
6
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3answers
536 views

Why don't circular polarizers reduce light transmission by just one stop?

I assume that an ideal circular polarizing filter should cut light transmission by exactly half – i.e., 1 stop – because every photon has (on average, with respect to a filter) either one of two ...
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1answer
45 views

Focus Issues Using a C mount Filter on a CS Lens

I'm trying to use the Arducam 8mp with CS mount with a 25.4 C-Mount Filter, but I am unable to focus the picture. The filter fits perfectly and still leaves room for the lens to screw in. It says in ...
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1answer
51 views

Clear filter holder for the Canon 430EX III-RT?

With my Canon 430EX III came a tungsten filter than neatly clips on to the flash head. However, it seems this is the only filter available. I notice the Canon 600EX series comes with a clear filter ...
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3answers
649 views

Choosing between 9-stop and 10-stop ND filter for flowing water long exposures

I'm planning to photograph flowing river water with long exposures for a blurry effect. I currently have a 4-stop ND filter which may be good for shooting wide open in sunlight, but is probably not ...
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4answers
414 views

Do cameras actively filter out UV light, or only infrared?

I know that a camera has a filter in front of the sensor to limit incoming light to the visible spectrum, to replicate what a human eye can see. But wherever I look on the internet, I always read ...
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2answers
273 views

Filter holder adaptor with Canon's EF 8-15mm f/4L Fisheye USM lens

I'm interested about using ND filters with the Canon 8-15mm fisheye, but I'm not finding information about which alternatives are available. Are Format or Lee sw150 compatible with such lens? If ...
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1answer
61 views

What would be the best way to make pictures taken with different cameras to look the same?

I am working on cleaning up an Instagram page and one problem I have come across is that there are a lot of pictures on that page. They come from different cameras, lighting and focuses and I was ...
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3answers
710 views

What is the purpose of an orange filter that comes with Canon flash?

My Canon (430EX III-RT) flash came with a neutral plastic diffuser and an orange plastic filter. Now, I understand the purpose of the neutral diffuser: it's (obviously) to diffuse the flash, without ...
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5answers
261 views

Why different filter thread sizes?

It is well known that different lenses often have different filter thread sizes. Why is this the case? Lens and camera manufacturers have agreed on one (per-brand) standard for attaching the lens to ...
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1answer
87 views

What filter size for Pentax 100SDUF telescope?

I am looking to use a Pentax 100SDUF telescope as a long focal length lens. I would like to protect the front element with a clear filter. There are no markings on the lens as to the size of filter ...
5
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4answers
271 views

How can I avoid lens reflection on long exposures using ND filters?

I'm getting lens reflection when I take a long exposure and use a filter. I'm assuming it's because of the gap between the lens and filter so light gets in. See the images I've attached. I'm ...
5
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4answers
306 views

What is a good general filter to use on a flash to compensate for fluorescent lighting?

I'm experimenting with filters over on-camera flash to better match the ambient light. I'm having good results using CTOs (Colour Temperature Orange filters) with sunlight, for example. When I'm ...
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1answer
456 views

How to enhance Text on this old photograph

I was trying to ientify two buildings on the right side of the Church. However despite best of my effort I could not identified them. One building (white one story building) has a sign mark but I ...
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2answers
98 views

Better Circular Polarizer for Sigma 150-500mm APO HSM [duplicate]

I recently used my Sigma 150-500 lens to shoot my son surfing. I was using a circular polarizer. The shots all appear out of focus even though focus was good and depth of field was good, even though ...
4
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2answers
220 views

What type of lens filter goes between the lens and body and has metal flakes in it?

About 20 years ago when I was just starting out in photography, I was at a portrait photographer's studio. He was showing me some of his equipment. One thing that I found interesting was a set of ...
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3answers
161 views

Should I remove UV filters from lenses for product photography? [duplicate]

I am starting to do product photography but I dont know whether I should keep the uv filter on my lens or not.
2
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1answer
110 views

Polarizing filter for TLR camera (Flexaret VII)

I recently purchased a Flexaret VII camera and now looking for polarizing filters. I could find color filters but not polarizing. Is there any alternative on the market, as I can't find any ...
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1answer
1k views

Filter for Canon EOS M50 Mirrorless Camera Kit w/EF-M15-45mm Lens [duplicate]

Recently i purchased a Canon EOS M50 Mirrorless Camera Kit w/EF-M15-45mm Len. i'm a beginner in photography. kindly advise me to find a proper filter for my lens. how can calculate or find the filter ...
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3answers
100 views

What would happen if the location of a filter on a lens were changed?

Most lenses have filter threads in front of the front element. However, some lenses have filter threads behind the rear element, such as some fisheye lenses b/c the front element protrudes too far ...
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2answers
1k views

What's the difference between a FL-D filter and an ND filter?

What's the difference between a FL-D filter and an ND filter? I see that FL-D is to improve light, but so is ND. What exactly is the difference?
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1answer
132 views

Is it picture noise or did I captured the stars of our galaxy?

I captured this image of empty sky using my phone in the direction of orion constellation and applied some filters using an app. Can anyone explain what is this?
10
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2answers
273 views

Is my ND4 filter really ND4?

As I understand, ND4 filter should transmit about 25% of the incident light. I have measured transmittance spectrum of my Fujimi ND4 58mm filter, and got the following result: So, transmittance is ...
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3answers
273 views

Can a circular polarizing lens (CPL) be rotated to end up completely without any effect

From what I've read and watched, a CPL can cut reflections/glare and increase saturation (mainly the blues). Also, these effects can be adjusted by simply rotating the filter. What is not being ...
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2answers
1k views

What is the filter thread size for a Hasselblad 80mm lens?

I was wondering if anyone knew the thread size on a Hasselblad 80mm lens for a UV Filter. Does 67mm sound correct?
1
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2answers
143 views

Can I use a polarizing filter on a non-STM lens?

Almost every single review of an STM lens mentions the following: The front end doesn't rotate while focusing, which is great for using a polar filter. Does this mean that I can't use a ...
2
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2answers
104 views

Circle Imprinted on Photos - How to Get Rid Of? [duplicate]

Recently some photos I've taken have had a band of circles imprinted on the pictures. Is this caused by my filter or something with the lens itself? Attached a photo for reference. It only happens ...
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1answer
1k views

What filter size for a Canon PowerShot SX430 IS?

What size lens filter do I need for a Canon PowerShot SX430 IS? I have a 40.5mm UV filter, but it does not fit.
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2answers
1k views

What kind of filter do I need for safe sun photography?

I'm a novice photographer but I'm really interested in Astrophotography. Since I don't want to go full equipment, spending too much, without knowing the basis, I need to ask for help here on Stack. I ...
16
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8answers
3k views

Does using long exposure together with ND filter make the scene look more evenly lit? [duplicate]

Suppose I try to shoot a piece of forest with trees casting dense shadows during daylight. It looks something like this to a human eye (part of larger and more detailed image from here) In the image ...
6
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3answers
83 views

Will all square/rectangular filters fit into the slots of a given filter holder?

I am researching square/rectangular ND/ND grad filters and holders. I don't own any yet. I am wondering: 1) Are all filter holders' slots - into which you slide square/rectangular filters - and all ...
2
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3answers
52 views

Is there a way of using a square gradient filter with a circular filter system?

I'm interested about a circular filter system for (very) long exposure photography, such as the one by Formatt Hitech. However, I'd like to use a square gradient filter; they make a circular one but I ...
1
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1answer
131 views

Light reflections with filter stacking

I typically use multiple filters when doing long exposure. Assuming light leaks from the sides are taken care off with proper sealing, could there be light bouncing back and forth between the ...
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2answers
60 views

What features should I look for in a filter system to avoid buying duplicates later [duplicate]

I’m looking to buy some kind of filter system. What features in a filter system should I as a begginer look for so that I will not have to replace everything (or buy duplicates in other sizesk) down ...