Logitech Webcam C310n を購入とC270との比較

matoken bookworm・Debian・Linux・testing

昔ハードオフでLogicool C270 を500円ほどで購入して使っていました．ビデオミーティングを良くするようになってC270はマイクもついているので便利に使っていました．でもマイクにノイズが乗るようになりNotePC内蔵ウェブカムやスマートフォンをWebcamとして利用していましたが使いにくいしマイクがついていないので少し不便．今回ひとつ上の機種のC310n を購入しました．

購入したのはAmazon で，-19% off 2400円となっていたのでそれで購入しようと思っていたところAmazon のUSED で2040円送料無料があったのでそちらを購入．

こんな感じのパッケージで届きました．内容物は本体と小さな保証書と取説が1枚づつ．付属物一覧がないので新品もこれと同じかは不明．

c310n package03
c310n package01

このテープの切り方はちょっとアウト感．

c310n package02

外観はこんな感じ．C270とほぼ同じだけどC270より気持ち大きくなって，ケーブル止めのベルクロがありません．

c310n 01
c310n c270 01

カタログスペックはC270 とほぼ同じで，画角と画素数が少し違うよう．

C270nC310n

画素数

0.9MP

1.2MP

対角視野

55°

60°

Linux端末に繋いでみるとC270と同じくUVC/UAC で認識して特に問題なく利用できていそうです．

$ sudo dmesg --human --color --follow-new
[  +4.580070] usb 1-3: new high-speed USB device number 59 using xhci_hcd
[  +0.369127] usb 1-3: New USB device found, idVendor=046d, idProduct=081b, bcdDevice= 0.12
[  +0.000026] usb 1-3: New USB device strings: Mfr=0, Product=0, SerialNumber=2
[  +0.000011] usb 1-3: SerialNumber: 159F4170
[  +0.002035] usb 1-3: Found UVC 1.00 device <unnamed> (046d:081b)
[  +0.115112] input: UVC Camera (046d:081b) as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/input/input192
[  +0.071778] usb 1-3: set resolution quirk: cval->res = 384
$ lsusb -d 046d:081b
Bus 001 Device 059: ID 046d:081b Logitech, Inc. Webcam C310
$ v4l-info /dev/video2

### v4l2 device info [/dev/video2] ###
general info
    VIDIOC_QUERYCAP
	driver                  : "uvcvideo"
	card                    : "UVC Camera (046d:081b)"
	bus_info                : "usb-0000:00:14.0-3"
	version                 : 6.1.12
	capabilities            : 0x84a00001 [VIDEO_CAPTURE,?,?,STREAMING,(null)]

standards

inputs
    VIDIOC_ENUMINPUT(0)
	index                   : 0
	name                    : "Camera 1"
	type                    : CAMERA
	audioset                : 0
	tuner                   : 0
	std                     : 0x0 []
	status                  : 0x0 []

video capture
    VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
	index                   : 0
	type                    : VIDEO_CAPTURE
	flags                   : 0
	description             : "YUYV 4:2:2"
	pixelformat             : 0x56595559 [YUYV]
    VIDIOC_ENUM_FMT(1,VIDEO_CAPTURE)
	index                   : 1
	type                    : VIDEO_CAPTURE
	flags                   : 1
	description             : "Motion-JPEG"
	pixelformat             : 0x47504a4d [MJPG]
    VIDIOC_G_FMT(VIDEO_CAPTURE)
	type                    : VIDEO_CAPTURE
	fmt.pix.width           : 640
	fmt.pix.height          : 480
	fmt.pix.pixelformat     : 0x56595559 [YUYV]
	fmt.pix.field           : NONE
	fmt.pix.bytesperline    : 1280
	fmt.pix.sizeimage       : 614400
	fmt.pix.colorspace      : SRGB
	fmt.pix.priv            : 4276996862

controls
    VIDIOC_QUERYCTRL(BASE+0)
	id                      : 9963776
	type                    : INTEGER
	name                    : "Brightness"
	minimum                 : 0
	maximum                 : 255
	step                    : 1
	default_value           : 128
	flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+1)
	id                      : 9963777
	type                    : INTEGER
	name                    : "Contrast"
	minimum                 : 0
	maximum                 : 255
	step                    : 1
	default_value           : 32
	flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+2)
	id                      : 9963778
	type                    : INTEGER
	name                    : "Saturation"
	minimum                 : 0
	maximum                 : 255
	step                    : 1
	default_value           : 32
	flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+12)
	id                      : 9963788
	type                    : BOOLEAN
	name                    : "White Balance, Automatic"
	minimum                 : 0
	maximum                 : 1
	step                    : 1
	default_value           : 1
	flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+19)
	id                      : 9963795
	type                    : INTEGER
	name                    : "Gain"
	minimum                 : 0
	maximum                 : 255
	step                    : 1
	default_value           : 64
	flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+24)
	id                      : 9963800
	type                    : MENU
	name                    : "Power Line Frequency"
	minimum                 : 0
	maximum                 : 2
	step                    : 1
	default_value           : 2
	flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+26)
	id                      : 9963802
	type                    : INTEGER
	name                    : "White Balance Temperature"
	minimum                 : 0
	maximum                 : 10000
	step                    : 10
	default_value           : 4000
	flags                   : INACTIVE
    VIDIOC_QUERYCTRL(BASE+27)
	id                      : 9963803
	type                    : INTEGER
	name                    : "Sharpness"
	minimum                 : 0
	maximum                 : 255
	step                    : 1
	default_value           : 24
	flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+28)
	id                      : 9963804
	type                    : INTEGER
	name                    : "Backlight Compensation"
	minimum                 : 0
	maximum                 : 1
	step                    : 1
	default_value           : 0
	flags                   : unknown
$ pactl list sources | grep 'escription: Webcam C310' -B 3 -A999
Source #1114
	State: RUNNING
	Name: alsa_input.usb-046d_081b_159F4170-02.mono-fallback
	Description: Webcam C310 モノ
	Driver: PipeWire
	Sample Specification: s16le 1ch 48000Hz
	Channel Map: mono
	Owner Module: 4294967295
	Mute: no
	Volume: mono: 65536 / 100% / 0.00 dB
	        balance 0.00
	Base Volume: 20724 /  32% / -30.00 dB
	Monitor of Sink: n/a
	Latency: 0 usec, configured 0 usec
	Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY
	Properties:
		alsa.card = "2"
		alsa.card_name = "USB Device 0x46d:0x81b"
		alsa.class = "generic"
		alsa.device = "0"
		alsa.driver_name = "snd_usb_audio"
		alsa.id = "USB Audio"
		alsa.long_card_name = "USB Device 0x46d:0x81b at usb-0000:00:14.0-3, high speed"
		alsa.name = "USB Audio"
		alsa.resolution_bits = "16"
		alsa.subclass = "generic-mix"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		api.alsa.card.longname = "USB Device 0x46d:0x81b at usb-0000:00:14.0-3, high speed"
		api.alsa.card.name = "USB Device 0x46d:0x81b"
		api.alsa.path = "hw:2"
		api.alsa.pcm.card = "2"
		api.alsa.pcm.stream = "capture"
		audio.channels = "1"
		audio.position = "MONO"
		card.profile.device = "1"
		device.api = "alsa"
		device.class = "sound"
		device.id = "112"
		device.profile.description = "モノ"
		device.profile.name = "mono-fallback"
		device.routes = "1"
		factory.name = "api.alsa.pcm.source"
		media.class = "Audio/Source"
		device.description = "Webcam C310"
		node.name = "alsa_input.usb-046d_081b_159F4170-02.mono-fallback"
		node.nick = "USB Device 0x46d 0x81b"
		node.pause-on-idle = "false"
		object.path = "alsa:pcm:2:hw:2:capture"
		priority.driver = "2000"
		priority.session = "2000"
		factory.id = "18"
		clock.quantum-limit = "8192"
		client.id = "33"
		node.driver = "true"
		factory.mode = "split"
		audio.adapt.follower = ""
		library.name = "audioconvert/libspa-audioconvert"
		object.id = "92"
		object.serial = "1114"
		node.max-latency = "16384/48000"
		api.alsa.period-size = "512"
		api.alsa.period-num = "64"
		api.alsa.headroom = "512"
		api.acp.auto-port = "false"
		api.acp.auto-profile = "false"
		api.alsa.card = "2"
		api.alsa.use-acp = "true"
		api.dbus.ReserveDevice1 = "Audio2"
		device.bus = "usb"
		device.bus-id = "usb-046d_081b_159F4170-02"
		device.bus_path = "pci-0000:00:14.0-usb-0:3:1.2"
		device.enum.api = "udev"
		device.form_factor = "webcam"
		device.icon_name = "camera-web-analog-usb"
		device.name = "alsa_card.usb-046d_081b_159F4170-02"
		device.nick = "USB Device 0x46d:0x81b"
		device.plugged.usec = "152884093590"
		device.product.id = "0x081b"
		device.product.name = "Webcam C310"
		device.serial = "046d_081b_159F4170"
		device.subsystem = "sound"
		sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.2/sound/card2"
		device.vendor.id = "0x046d"
		device.vendor.name = "Logitech, Inc."
		device.string = "2"
	Ports:
		analog-input-mic: マイクロフォン (type: Mic, priority: 8700, availability unknown)
	Active Port: analog-input-mic
	Formats:
		pcm

現在はAmazonでC270n 2,200円，C310n 2,400円と値段差があまりないのでC310の方が良さそうです．

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