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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3
votes
1answer
199 views

Polarizing filter - degree of polarization vs polarizing sunglasses?

I thought a polarizing filter only lets through light of one polarity. Thus if I have 2 polarizing sunglasses and look through both superimposed and rotate one it should completely block light at 90 ...
1
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2answers
98 views

Photo of blue LCD display

I have a device with a blue LCD display where the backlight is blue and the letters are white. When I take photos of it with a cheap webcam, you cannot see any letter, because the blue light is too ...
0
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2answers
34 views

How to test two polarising filters against each other?

I bought 2 CPL polarising filters from the same manufacturer with the same characteristics. One is medium level and one is their highest level. The difference between them, as noted by the ...
0
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2answers
229 views

How can I recreate this lighting/editing technique?

I'd like to introduce myself into photography. Lately, I've been taking special attention to some pictures on instagram and trying to recreate, not the whole scene but the lightroom, filters and ...
1
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2answers
33 views

Will a 77-82mm stepup + filter fit with stock hood on Sony 70-200mm 2F.8 GM?

I am about to buy a Sony A7RIII + 16-35mm F2.8 GM + 70-200mm F2.8 GM and want to use the same X4 CPL filter. I plan on buying the 82mm X4 CPL (which will fit the 16-35mm) and using a stepup to allow ...
4
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2answers
118 views

Do I still need filters for photographing landscape under an eclipse, if I'm not zooming in on the sun itself?

Context: I find myself due to be in the path of the upcoming annular solar eclipse. This was unplanned and I am unable to get a proper filter delivered on time. The general consensus on the internet ...
2
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1answer
36 views

Can I use a screw-on variable ND filter together with a square filter holder?

I have a K&F variable ND screw-on filter. I want to buy the Cokin Z series holder for graduated ND filters. Is it possible to use the Cokin Z holder with GNDs together with the variable ND screw-...
2
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2answers
49 views

Best Flat Light Diffuser for a High-Intensity Flashlight

I am doing some experimentation with a compact lighting kit to use for capturing textures, hence some constraints. I am using a high-intensity flashlight like the Acebeam X80-GT placed at a 1-3m ...
2
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2answers
30 views

is using a screw on ND filter along with GND filers which require a holder possible?

I have a screw on 3 - 7 stop variable ND filter which screws on to the lens. I want to buy some GND soft grads which require a filter holder (This holder needs to screw on to the lens). Am I right ...
3
votes
2answers
102 views

72mm filter on a 77mm lens

I bought some filters a few months ago with a 72mm thread. Now I find myself buying a new lens with a 77mm thread. I have never used step up/down rings before. What the pro and cons of using an ...
1
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1answer
54 views

Do i need a Grad filter along with ND for long exposures that involve the sky?

I was at a beach taking a photo of the sunset and trying to get a long exposure but the sky was too bright. If I put on a ND Filter, that would darken both the sky and foreground meaning I'd have to ...
2
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1answer
60 views

Do i need more than one filter holder for different brands?

I am currently looking for ND and Grad ND filters for my camera for long exposures. Im a beginner and new to all of this and im slighty confused. Question is Lets say i bought a Cokin P series filter ...
1
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1answer
113 views

Canon EF-S 24mm f/2.8 STM 'Pancake' lens hood and UV filter

I was wondering how and why to use the lens hood of the Canon EF-S 24mm f/2.8 STM 'Pancake' model (ES-52, which is very small) and a UV filter. Should I use the filter after or before the lens hood?
0
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2answers
71 views

Color filters that correspond to Macbeth chart colors

I'm curious if anyone knows of a set of color filters that correspond to the standard Macbeth chart colors. In theory I should be able to use a filter with a transmission spectra curve identical to ...
2
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0answers
30 views

digikam: reuse edit filter for batch editing

I edited a raw photo and applied some filters (so, I can see them in "used filters" tab in image editing window). I would now like to apply the exact filters in a batch editing for multiple files, is ...
3
votes
2answers
130 views

When enlarging with no contrast filter, photo comes out extremely dark. What am I doing wrong?

When enlarging b&w 35mm film in the darkroom, I cannot get a decent print unless I use a 0 or 1 grade filter. If I use no filter, the print turns out nearly completely black (even at exposure ...
0
votes
3answers
160 views

Does the autofocus system look through the lenses?

I have a doubt about the effect of putting a filter (polarizer, UV etc) on the autofocus system. In theory, a lens which is put in front of the lens will affect the focus (we must set a different ...
1
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2answers
666 views

Settings to improve dull images

I am using Nikon D5600 with 18-55 mm kit lens. When I take photos of open fields or other landscapes, the color combination comes out dull. I compared it with Canon 1500D photos. Photos from Canon are ...
1
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1answer
129 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
votes
3answers
422 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/...
2
votes
1answer
114 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. ...
1
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3answers
349 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? ...
1
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1answer
114 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 ...
1
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1answer
137 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, ...
6
votes
6answers
1k 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 ...
1
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0answers
39 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 ...
0
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1answer
2k 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
votes
2answers
402 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 ...
1
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1answer
444 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 ...
3
votes
2answers
419 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 ...
0
votes
1answer
328 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
votes
3answers
2k 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 ...
14
votes
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 ...
0
votes
5answers
307 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-...
5
votes
2answers
115 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 ...
8
votes
3answers
1k 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 ...
1
vote
1answer
67 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 ...
2
votes
2answers
86 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 ...
3
votes
3answers
2k 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 ...
3
votes
4answers
729 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 ...
2
votes
2answers
571 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 ...
-1
votes
1answer
325 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 ...
4
votes
3answers
1k 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 ...
-3
votes
5answers
492 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 ...
1
vote
1answer
99 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
votes
4answers
549 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
votes
4answers
543 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 ...
1
vote
1answer
785 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 ...
2
votes
2answers
111 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
votes
2answers
248 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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