File:Older-generation snorkel masks.jpg

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File:Older-generation snorkel masks.jpg - Wikipedia

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DescriptionOlder-generation snorkel masks.jpg	English: Three types of older-generation snorkel masks are illustrated. Type A: A model enclosing the eyes and the nose only. A permanent single snorkel emerges from the top of the mask and terminates above with a shut-off ball valve. Type B: A model with a chinpiece to enclose the eyes, the nose and the mouth. Permanent twin snorkels emerge from either side of the mask and terminate above with shut-off "gamma" valves. Type C: A model enclosing the eyes and the nose only. Removable twin snorkels emerge from either side of the mask and terminate above with shut-off ball valves. Supplied with plugs for use without snorkels, as illustrated.
Date	16 February 2019, 22:26:05
Source	Own work
Author	Helmardine

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	15:46, 16 February 2019		3,053 × 2,561 (1.53 MB)	Helmardine	User created page with UploadWizard

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Snorkel (swimming)

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Camera manufacturer	FUJIFILM
Camera model	FinePix A920
Exposure time	1/60 sec (0.016666666666667)
F-number	f/2.9
ISO speed rating	400
Date and time of data generation	22:26, 17 January 2007
Lens focal length	8.8 mm
Orientation	Normal
Horizontal resolution	72 dpi
Vertical resolution	72 dpi
Software used	Digital Camera FinePix A920 Ver1.00
File change date and time	22:26, 17 January 2007
Y and C positioning	Co-sited
Exposure Program	Normal program
Exif version	2.2
Date and time of digitizing	22:26, 17 January 2007
Meaning of each component	Y Cb Cr does not exist
Image compression mode	2
Shutter speed	6
APEX aperture	3.1
APEX brightness	0.43
Exposure bias	0
Maximum land aperture	3.1 APEX (f/2.93)
Metering mode	Pattern
Light source	Unknown
Flash	Flash fired, auto mode
Supported Flashpix version	1
Color space	sRGB
Focal plane X resolution	4,482
Focal plane Y resolution	4,482
Focal plane resolution unit	3
Sensing method	One-chip color area sensor
File source	Digital still camera
Scene type	A directly photographed image
Custom image processing	Normal process
Exposure mode	Auto exposure
White balance	Auto white balance
Scene capture type	Standard
Sharpness	Normal
Subject distance range	Unknown

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16 February 2019

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