Black mist, polarisers, ND strategy, and lens character as intentional creative tools
Focus: Black mist filters — the science, the aesthetic, and when each strength is appropriate.
What a black mist filter doesA black mist filter contains microscopic particles suspended in glass that scatter light from bright sources. This creates a soft glow around highlights, spreads specular reflections, and very slightly reduces contrast — adding an organic, film-like quality to an otherwise clinical digital image. Unlike soft focus filters, a black mist does not significantly blur subjects — they retain sharpness while the overall quality becomes warmer and more atmospheric.
1/4 vs 1/8 black mistYour 1/8 black mist is the subtle option: the glow effect is barely perceptible in many situations, contrast reduction is minimal. Your 1/4 creates a more obvious glow around practical lights, street lights, and specular highlights. The 1/4 on a close-up portrait at f/2.8 or wider creates the creamy, dreamy look associated with contemporary portrait filmmaking. The 1/8 is the version to use when you want the 'it looks subtly different but I can't quite say why' quality.
When to use black mist — and when not toBlack mist works well: in portrait work (softens highlights), in candlelit or practical-light scenes (the glow is naturalistic), in night city scenes (street lights bloom organically), and in documentary work where emotional warmth is the priority. Black mist works less well: in architecture and product photography where precise edge definition is essential, and in flat overcast outdoor light where there are no bright specular highlights to interact with the filter.
The Neewer F700 for filter evaluationThe effect of a black mist filter is subtle and difficult to evaluate on the camera's small LCD — especially in bright outdoor conditions. Connect the Neewer F700 via HDMI and evaluate the filter effect on the large 7" screen. Compare with and without the filter using the F700's LUT-monitored image to see the effect as it will appear after grading.
Stacking black mist filtersYou can stack both black mist filters simultaneously (1/4 + 1/8) for a combined effect — more glow, more contrast reduction. Useful for stylistically bold work. Check for vignetting when stacking on wider focal lengths — on the 20mm f/1.8 at f/1.8, stacked filters may cause mechanical vignetting at the frame edges.
Drill 1
Black mist comparative study
Shoot the same portrait at f/2.8: no filter, 1/8 black mist, and 1/4 black mist. Shoot in both bright practical light and flat overcast daylight. Import to Resolve. Compare all six clips side by side. Document: in which scenarios is the 1/8 visible? In which is the 1/4 too much?
Drill 2
Night city black mist
Shoot in Adelaide at night with your 1/4 black mist on the Sigma at f/2.8. Street lights, neon signs, and headlights should all show a visible organic bloom. Compare against the same scene without the filter. Grade both in Resolve.
Drill 3
Portrait glow test — 1/4 at f/1.8
Using the Sony 20mm f/1.8 G with the 1/4 black mist, shoot a portrait in window light at f/1.8. The combination of fast aperture and black mist should produce a very soft, glowing image quality. Shoot the same setup without the filter. Is the glow effect pleasing and appropriate, or does it look like a technical flaw?
Drill 4
Stacking comparison
Shoot: no filter, 1/8 only, 1/4 only, and both stacked. Check for vignetting at widest apertures. Rate all four in terms of how often you would use each in professional work. Write your personal preference guide for each strength and scenario.
Week 1 Assignment
"Black mist creative project"
Produce a 90-second portrait film where the black mist filter is a conscious creative choice. In the accompanying note, explain: which filter you used, why you chose that strength for this specific subject and lighting, and what effect it creates that you could not achieve in post-production alone.
Filter choice is justified in written notes
Effect is visible but not overwhelming
The filter contributes something the grade alone cannot replicate
Footage is correctly exposed and graded to your standard
Sony FX301/4 Black mist1/8 Black mistSigma 18-50mm f/2.8DaVinci Resolve
Focus: Polarising filters — physics, applications, and practical use in South Australian conditions.
How a polariser worksLight from the sun is unpolarised — it vibrates in all directions. When it reflects off a non-metallic surface (water, glass, leaves), it becomes polarised. A circular polarising filter (CPL) blocks light polarised in the perpendicular direction. Rotating the filter changes which polarisation direction is blocked — reflections disappear. The depth of sky blue is also affected: the sky is partially polarised light scattered from the atmosphere, so the CPL darkens the sky at 90° to the sun.
CPL for window reflectionsThe polariser eliminates or reduces reflections in glass — most practical for architecture, automotive, and interior photography. When shooting through a shop window, photographing a building with reflective glazing, or shooting through a car's windscreen, the CPL can remove the reflection that would otherwise obscure the subject. Rotate the filter while looking at the Neewer F700's live feed until the reflection diminishes. The effect is strongest at approximately 35° to the glass surface.
CPL for waterWithout the CPL, the water surface's reflection obliterates the underwater world. With the CPL correctly oriented, underwater detail, the colour of the riverbed, and submerged objects become visible. The water appears deeper in colour and surface texture becomes more visible. A significant creative tool for landscape and documentary photography near water.
CPL for sky — blue sky deepeningAt 90° to the sun's direction, the polariser darkens the blue sky dramatically and increases cloud contrast. The effect varies with the sun's angle — it is strongest when the sun is at a moderate elevation (30–60°) and essentially zero at sunrise, sunset, and directly overhead. In South Australia's bright summer light, the effect is very pronounced.
CPL exposure compensationA circular polariser removes 1.5 to 2 stops of light. Factor this into your ND filter choice when using both simultaneously: if you normally use ND64, you may only need ND16 when the CPL is also in use. Always recheck exposure on the Neewer F700's waveform after fitting the CPL.
Drill 1
Reflection elimination test
Find a glass shop front, a car window, or still water. Shoot the same scene: without CPL, with CPL at minimum effect, and with CPL at maximum effect. Compare all three. Note how completely the reflection can be removed and at what cost to the image.
Drill 2
Water polarisation
Visit a local creek, river, or the Adelaide coastline. Shoot the water surface without CPL, then with CPL at various rotation positions. Observe how the underwater world becomes visible. Shoot video footage of the rotation transition — pan the filter from minimum to maximum effect while filming.
Drill 3
Sky deepening — clear blue day
On a clear blue-sky day in Adelaide, shoot a landscape at 90° to the sun without CPL, then with CPL. Compare the sky colour and cloud contrast in both. The difference in South Australia's intense summer light should be dramatic.
Drill 4
CPL + ND combination
Set up a bright outdoor scene. Fit both CPL and your appropriate ND filter. Use the Neewer F700's waveform to confirm exposure. Note which ND filter was needed compared to the same scene without the CPL — the CPL's 1.5–2 stop penalty should require reducing your ND strength by approximately the same amount.
Week 2 Assignment
"CPL portfolio images"
Produce a series of 5 images where the circular polariser makes a demonstrable and significant contribution. Each must be accompanied by a note explaining what the CPL contributed specifically. At least 2 images must show either reflection elimination or water clarity as primary effects.
5 images where CPL contribution is clearly demonstrable
At least 2 images show reflection elimination or water clarity
At least 1 image demonstrates sky deepening
Written notes correctly identify the specific CPL contribution for each image
Sony a6700PolariserSony 20mm f/1.8 GSigma 18-50mm f/2.8
Focus: ND strategy for advanced video work — combining NDs with other filters and managing optical quality.
Building your ND systemYour ND set should cover: ND4 (2 stops), ND8 (3 stops), ND16 (4 stops), ND64 (6 stops), ND1000 (10 stops). This covers from mild overcast to full midday sun at f/1.8. Most useful additions: ND32 (5 stops — bridges the ND16 to ND64 gap) and ND128 (7 stops — for f/1.8 in very bright conditions without stacking). Prefer single filters over stacking wherever possible.
ND filter quality — what differentiates good from badQuality indicators: colour neutrality (poor NDs introduce a colour cast — typically warm for cheap filters), optical flatness (poor NDs cause edge-to-edge sharpness variation), and coating quality (poor coatings increase flare and ghosting). Test your NDs by shooting a grey card with and without each filter in consistent daylight and comparing in the Resolve parade scope.
Flare — the optical reality and the creative toolLens flare occurs when a bright light source enters the lens at an angle causing internal reflections. Adding an ND filter adds two additional glass surfaces that can worsen flare. The creative corollary: deliberately shooting into the sun with your 20mm f/1.8 G can produce beautiful, organic flare. Control it by rotating the lens relative to the sun's position — move slightly and the flare character changes significantly.
The ND + black mist combination for videoMost commonly used combination for video in daylight: an ND filter (exposure control and 180° shutter compliance) stacked with a black mist filter (image quality and atmosphere). ND goes closest to the lens, black mist further out. Monitor the combined effect on the Neewer F700 before shooting — stacking can introduce subtle colour shifts that need correction in white balance.
Lens character — the personality of your glassEvery lens has a distinct rendering character beyond its technical specifications. Your Sony 20mm f/1.8 G has smooth, slightly clinical bokeh, clean minimal flare, and high micro-contrast. Your Sigma 18-50mm f/2.8 has a warmer rendering, slightly lower micro-contrast, and a different bokeh character. Understanding each lens's distinct personality — and choosing between them for expressive rather than just technical reasons — marks the transition from using tools to expressing through them.
Drill 1
ND colour cast test — your complete filter set
Shoot a grey card under consistent daylight with each ND filter individually. Import to Resolve and read the RGB parade for each clip. Record any colour cast for each filter. Write a reference sheet listing each filter and its cast characteristics.
Drill 2
Flare study — 20mm f/1.8 with and without ND
On a sunny day, shoot directly toward the sun with the Sony 20mm f/1.8 G at f/1.8 with no filter. Move slightly to change the sun's position in the frame. Observe the flare character. Repeat with the ND64 fitted. Compare — does the ND improve or worsen the flare?
Drill 3
ND + black mist combination shoot
Shoot a portrait outdoors in bright sun with: ND64 + 1/4 black mist on the Sigma at f/2.8, 1/50s, ISO 400. Monitor on the Neewer F700 — confirm correct exposure via waveform and observe the combined filter effect live. Grade the result in Resolve.
Drill 4
Single vs stacked comparison
For the same scene, shoot: no filter, ND only, black mist only, and ND + black mist stacked. Compare in Resolve. Assess: what does each filter contribute independently? What does the combination contribute beyond either filter alone?
Week 3 Assignment
"Filter toolkit documentary"
Produce a 60-second self-directed mini documentary demonstrating your full filter toolkit in action on a real shoot. Show: the ND selection process, the black mist decision, and the CPL if relevant. Grade the resulting footage to your standard.
ND selection decision is explicitly motivated
Black mist choice is explicitly motivated
Filter effect is visible and appropriate for the creative context
Grade is applied to your standard
Sony a6700Sony FX301/4 Black mist1/8 Black mistPolariserND filtersNeewer F700 monitorDaVinci Resolve
Focus: Developing your personal optical signature — how lens and filter choices define your visual style.
Optical signature — the photographer's handwritingEvery significant photographer and cinematographer develops a consistent optical character to their work that is recognisable independent of the subject. This includes lens choice (wide and close vs telephoto and compressed), aperture preference, filter use, and flare tolerance. Making these choices consistent across your work is the foundation of a visual identity.
Testing your optical choices against reference workIdentify 5–10 photographers or cinematographers whose visual style you find genuinely compelling. Analyse their optical choices specifically: what focal lengths do they favour? Do they use soft focus or diffusion filters? Do they shoot wide open or stopped down? Is there visible flare in their work? The analysis reveals what your taste is drawn to — which gives you a target for your own optical choices.
The creative brief for optical choicesBefore choosing your lens and filter combination for any shoot, ask: What emotional quality do I want this footage to have? Clinical and precise — or warm and atmospheric? Does the subject warrant intimacy (wide and close) or authority (telephoto and compressed)? Is the lighting situation one that will benefit from a soft filter? These questions, answered before the camera is raised, produce more coherent and intentional visual work than any technical formula.
Practical light + black mist — the warm glow workflowOne of the most effective combinations for intimate portrait work: practical warm tungsten lamps (~2700K) as key light, the Neewer RGB660 panel matched to the same temperature as fill just outside frame, and the 1/4 black mist on the camera. The practical lights create motivated warm illumination; the black mist creates the glow and halation around those warm light sources. Grade in Resolve by lifting shadows slightly toward warm and reducing highlight saturation — the grade works with the filter rather than against it.
Optical consistency across a projectFor any project longer than a single scene, establish your lens and filter choices before shooting begins and maintain them throughout. If you shoot the opening scene with the 20mm f/1.8 and a 1/4 black mist, use the same combination for all scenes unless there is a deliberate narrative reason to change. Document your standard kit for each project in your pre-production notes.
Drill 1
Reference photographer optical analysis
Identify three photographers or cinematographers whose optical aesthetic you admire. For each: identify their probable lens focal length preferences, apparent depth of field preference, any visible diffusion filter use, and the overall optical character of their work. Write a paragraph per person. Then write a fourth paragraph identifying which elements you want to incorporate into your own optical approach.
Drill 2
Personal optical test card
Shoot the same scene in five distinct optical configurations: (1) Sigma 18mm f/2.8 no filter, (2) Sigma 50mm f/2.8 no filter, (3) 20mm f/1.8 with 1/4 black mist, (4) Sigma 50mm f/2.8 with 1/8 black mist, (5) 20mm f/1.8 with 1/4 black mist and CPL. Compare all five. Which is closest to your natural preference?
Drill 3
Practical light + black mist shoot
Execute the warm glow workflow: practical lamp as key, Neewer panel as matched fill, 1/4 black mist on the FX30. Shoot a 2-minute sequence. Grade in Resolve. Deliver the finished clip and a BTS photo showing the setup.
Drill 4
Optical signature statement
Write a 400-word optical signature statement describing your intentional optical preferences: your default lens choice, default aperture preference, filter philosophy, and how these choices connect to the emotional quality you want your work to have.
Week 4 Assignment
"Creative optical portfolio"
Produce a 90-second film that represents your current optical signature at its clearest — where every lens and filter choice is deliberate and documented. Deliver: the finished film, a shot list annotating the lens and filter used for every shot, and your optical signature statement.
Optical character is consistent across all shots
Shot list accurately documents lens and filter choice for every shot
Optical signature statement is thoughtful and specific
The film demonstrates a recognisable personal aesthetic
Sony a6700Sony FX301/4 Black mist1/8 Black mistPolariserSony 20mm f/1.8 GSigma 18-50mm f/2.8DaVinci Resolve
Using a black mist filter in every situation out of habit
A filter becomes a cliché when it is used reflexively rather than intentionally. Black mist applied to crisp architecture or product photography looks like a technical error rather than a creative choice.
Fix: Before fitting any filter, ask: what does this filter add to this specific image in this specific context? If you cannot answer with a specific creative justification, shoot without the filter.
Ignoring the polariser's effect on exposure
Many photographers fit a CPL and forget it removes 1.5–2 stops of light. Result: an underexposed image, or wrong ND choice for the required shutter speed.
Fix: After fitting a CPL, always recheck your exposure on the Neewer F700's waveform. Adjust your ND strength to compensate for the CPL's light loss — approximately one step less ND (e.g. ND64 becomes ND16) when the CPL is also in use.
Stacking filters without checking for vignetting
Stacking two or more filters adds physical depth to the filter stack. On wide lenses at wide apertures, this depth causes the filter ring to enter the frame — visible as dark corners.
Fix: Always check for vignetting when stacking filters, especially on the Sony 20mm f/1.8 G at f/1.8. Zoom in to the corner in the Neewer F700's live view. If vignetting is visible, use slim-profile filters or remove one filter.
The 1/8 black mist is your safest everyday filter
The 1/8 black mist is subtle enough to be used in almost all portrait and narrative video contexts without looking like an obvious effect. Consider keeping it semi-permanently on your Sigma 18-50mm for video work — it consistently adds organic warmth and reduces clinical digital sharpness without ever being the obvious thing the viewer notices.
1/8 Black mist · Sigma 18-50mm f/2.8
Use the Neewer F700 to evaluate filter effects live on set
The 7" screen makes the subtle effects of diffusion filters genuinely evaluable in a way the camera's small LCD cannot. Assess the glow effect around highlights and the overall atmospheric quality on the F700 before committing to recording.
Neewer F700 7" monitor
Flare from your Sony 20mm f/1.8 G is a creative asset
At f/1.8 shot toward a bright light source, the 20mm produces a clean, modern flare. Used deliberately — placing the sun just outside frame or using it as a motivated lens flare that bleaches into a cut — it adds energy and physicality that no post-processing effect can replicate convincingly.