Circular Polarizing Filter

Is there any way to increase the amount of light entering a (digital) camera for high-speed photography?

I know that increasing ISO value is one way to compensate for low light levels, but I don’t like the accompanying increase in noise. I’m thinking of something that does the opposite of a circular polarizing filter, something that lets me use a faster shutter speed at a given light level.

Unfortunately there is no filter that will admit more light than what is available. If you can repeal the laws of physics you might be able to make such a filter.

In low-light photography lens speed is of the essence. If the maximum aperture on your lens is f3.5 then you are limited to that. Your only choice is to either invest in a very fast prime lens like a 50mm f1.4 or use a higher ISO.

Here is a hypothetical chart which shows, accurately, the relationship of lens speed and shutter speed at several ISO settings.

ISO 100
f1.4 @ 1/125
f2 @ 1/60
f2.8 @ 1/30
f3.5 @ 1/20
f4 @ 1/15

ISO 200
f1.4 @ 1/250
f2 @ 1/125
f2.8 @ 1/60
f3.5 @ 1/40
f4 @ 1/30

ISO 400
f1.4 @ 1/500
f2 @ 1/250
f2.8 @ 1/125
f3.5 @ ~1/80
f4 @ 1/60

ISO 800
f1.4 @ 1/1000
f2 @ 1/500
f2.8 @ 1/250
f3.5 @ ~1/160
f4 @ 1/125

The faster the lens the faster the shutter speed at a given ISO.

DSLR Tips: Using polarizing filters

Marumi DHG Super Circular Polarizer 77mm Filter NEW $76.87

Marumi AMDSCPL77PK1 SUPER DHG Circular Polarizer MC 77mm Bundle $80.99

Genuine Kenko 77mm Digital Wideband CPL Circular Polarizing C-PL W Filt $4.35

Hoya 55mm Circular Polarizer HMC Super (S-HMC) Multi-Co $34.00

Vivitar 77mm C-PL Circular Polarizer Glass Filter 77 $24.95

Genuine Kenko 72mm Digital Wideband CPL Circular Polarizing C-PL W Filt $1.56

B+W 77 mm MRC Kaesemann Circular Polarizer Filter NEW $165.97

Hoya HD Digital UV + Circular Polarizer Filter Kit 52mm $159.00

Pentax 67mm Circular Polarizing Filter $49.99

Hoya PRO1 Digital Circular Polarizer 52mm $16.61

Hoya 62mm Circular Polarizer (S-HMC) Glass Filter Thin $59.00

Genuine Kenko 58mm Digital Wideband CPL Circular Polarizing C-PL W Filt $1.56

Vivitar 58mm C-PL Circular Polarizer Glass Filter 58 $12.95

Camera Lens Protector Circular Polarizer Filter 62mm $10.21

Tiffen 67mm Circular Polarizer Filter + UV Filter + More For Nikon D5100, D3100 $69.95

52mm 52 mm Circular Polarizing C-PL CPL Lens Filter + Cleaning Pen $8.23

Promaster Circular Polarizer Filter 77mm Lens Camera Photo Used Untested AS IS $8.05

Tiffen 55mm Circular Polarizer Filter – NEW $24.95

Hoya 82mm Circular Polarizer (S-HMC) Glass Filter Thin $109.00

77mm B+W Circular Polarizer with Multi-Resistant Coating $100.00

Hoya HD Digital Circular Polarizer CPL Lens Filter 72mm *USA Authorized Dealer* $102.50

82mm Pro UV ultraviolet CPL circular polarized FLD lens filter kit camera $24.99

Hoya 58mm HRT Multi-Coated Circular Polarizer UV Filter $65.85

Vivitar 62mm ***CIRCULAR POLARIZING*** Glass Filter $3.99

B+W 49MM CIRCULAR POLARIZER MRC FILTER $22.00

NEW GENUINE ORIGINAL COKIN 62 mm CIRCULAR ROTATING POLARIZING SCREW IN Filter $16.99

Sunpak C-PL Filter 72mm Circular polarizer $39.99

TIFFEN FILTER CIRCULAR POLARIZER (CPL) 77MM genuine USA used $59.99

58mm Circular Polarizing CPL C-PL Filter Lens 58mm+Cap $7.55

37mm CPL C-PL Circular Polarizer Lens Filter+Camera Cap+Keeper Holder+Pen NEW $9.27

Genuine Kenko 72mm Digital Wideband CPL Circular Polarizing C-PL Japan $3.25

UK New Circular Polarizer CPL Filter for Cokin P Series $25.26

Genuine Kenko 67mm Digital Wideband CPL Circular Polarizing C-PL Japan $0.99

Tiffen Photo Twin Pack – 52mm Circular Polarizer & UV-P + Filter Pouch $45.49

Genuine Kenko 62mm Digital Wideband CPL Circular Polarizing C-PL Japan $0.99

Tiffen Photo Twin Pack – 55mm Circular Polarizer & UV-P + Filter Pouch $45.49

2 FILTER 58mm MC-UV & CPL Circular Polarizer for Canon $8.99

Tiffen 37mm Circular Polarizer **AUTHORIZED TIFFEN USA DEALER** $37.95

HOYA 55mm 55 HD Circular Polarizer CPL CIR-PL Filter $67.99

HOYA 58mm 58 HD Circular Polarizer CPL CIR-PL Filter $72.99

HOYA 62mm 62 HD Circular Polarizer CPL CIR-PL Filter $79.99

HOYA 72mm 72 HD Circular Polarizer CPL CIR-PL Filter $107.99

HOYA 82mm 82 HD Circular Polarizer CPL CIR-PL Filter $127.99

Schneider 4×5.65″ 85 Circular True Polarizing Filter $400.00

Vivitar 67mm C-PL CPL Circular Polarizer Filter 67 NEW $14.95

Quantaray 77mm Rotating Circular Polarizer PRISTINE!! w/ case $8.00

Genuine Kenko 55mm Digital Wideband CPL Circular Polarizing C-PL Japan $0.99

55MM CPL CIRCULAR POLARIZING LENS GLASS FILTER CAMERA $2.25

Genuine Kenko 52mm Digital Wideband CPL Circular Polarizing C-PL Japan $0.99

Hoya HMC 49mm Circular Polarizer – Multi-Coated **AUTHORIZED HOYA USA DEALER** $67.90

Tiffen 52mm Circular Polarizer **AUTHORIZED TIFFEN USA DEALER** $35.95

55mm Circular Polarizing CPL+52-55 mm Ring Adapter+Cap $8.73

Tiffen 46mm Circular Polarizer **AUTHORIZED TIFFEN USA DEALER** $35.95

Tiffen 49mm Circular Polarizer **AUTHORIZED TIFFEN USA DEALER** $35.95

58mm Circular CPL Polarizer 58 mm Polarizing Filter +UV $9.00

HELIOPAN 69MM SLIM CIRCULAR POLARIZER..CASE..MINT $74.99

52mm UV ultraviolet CPL circular polarized FLD filter lens kit for Nikon D5000 $15.51

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