Blackmagic Pocket 6K In Stock!

Description

The Blackmagic Pocket Cinema Camera 6K features a Super 35 size sensor, 13 stops of dynamic range and dual native ISO up to 25,600 for HDR images and incredible low light performance. External controls give quick access to essential functions, while the large 5 inch touchscreen makes it easy to frame shots, focus accurately and change camera settings. Features include built in SD/UHS‑II or CFast 2.0 recorders for Blackmagic RAW or ProRes recording as well as a USB‑C expansion port for recording externally to disks, plus EF lens mount, built-in microphones, XLR input, full sized HDMI, 3D LUT support, Bluetooth and more.

Price    $2,495

Camera Features

Effective Sensor Size
23.10mm x 12.99mm (Super 35)

Lens Mount
Active EF mount.

Lens Control
Iris, focus and zoom on supported lenses.

Dynamic Range
13 Stops.

Dual Native ISO
400 and 3200

Shooting Resolutions
6144 x 3456 (6K) up to 50 fps
6144 x 2560 (6K 2.4:1) up to 60 fps
5744 x 3024 (5.7K 17:9) up to 60 fps
4096 x 2160 (4K DCI) up to 60 fps
3840 x 2160 (Ultra HD) up to 60 fps
3728 x 3104 (3.7K 6:5 anamorphic) up to 60 fps
2868 x 1512 (2.8K 17:9) up to 120 fps
1920 x 1080 (HD) up to 120 fps


Frame Rates
Maximum sensor frame rate dependent on resolution and codec selected. Project frame rates of 23.98, 24, 25, 29.97, 30, 50, 59.94 and 60 fps supported.
Off-speed frame rates up to 60 fps in 6K 2.4:1, 120 fps in 2.8K 17:9 and 1080HD.

Focus
Auto focus available using compatible lenses.

Iris Control
Iris wheel and touchscreen slider for manual iris adjustment on electronically controllable lenses, iris button for instant auto iris settings on compatible lenses.

Screen Dimensions
5” 1920 x 1080.

Screen Type
LCD capacitive touchscreen.

Metadata Support
Automatically populated lens data from electronic EF lenses. Automatic recording of camera settings and slate data such as project, scene number, take and special notes. A 3D LUT can also be embedded in metadata of Blackmagic RAW files.

Controls
Touchscreen menus on 5 inch screen. 1 x Power Switch, 1 x Record Button, 1 x Stills Button, 1 x Scroll Wheel with push integrated into handgrip, 1 x ISO, Button, 1 x White Balance, 1 x Shutter Button, 3 x software configurable Fn buttons, 1 x High Frame Rate (HFR) Button, 1 x Zoom Button, 1 x Menu Button, 1 x Play Button, 1 x Focus Button and 1 x IRIS Button.

Connections

Total Video Inputs
None.

Total Video Outputs
1 x HDMI Type A

Analog Audio Inputs
1 x mini XLR analog switchable between mic with phantom power support and line level (up to +14dBu). 1 x 3.5mm Stereo Input. Can also be used for Timecode input.

Analog Audio Outputs

1 x 3.5mm headphone jack.

Computer Interface

USB Type-C for external drive recording and software updates.

Audio

Microphone

Integrated stereo microphone.

Built in Speaker

1 x mono speaker.

Media

Media
1 x CFast card slot, 1 x SD UHS‑II card slot, 1 x USB-C 3.1 Gen 1 expansion port for external media for Blackmagic RAW and ProRes Recording.

Media Format
Can format media to ExFAT (Windows/Mac) or HFS+ (Mac) file systems.

Please click here for a summary of compatible media.

Supported Codecs

Codecs
Blackmagic RAW Constant Bitrate 3:1,
Blackmagic RAW Constant Bitrate 5:1,
Blackmagic RAW Constant Bitrate 8:1,
Blackmagic RAW Constant Bitrate 12:1,
Blackmagic RAW Constant Quality Q0,
Blackmagic RAW Constant Quality Q5,
ProRes 422 HQ QuickTime,
ProRes 422 QuickTime,
ProRes 422 LT QuickTime,
ProRes 422 Proxy QuickTime.

Storage Features

Storage Type
1 x CFast 2.0.
1 x SD UHS-II card.
1 x high speed USB-C expansion port for external media.

Storage Rates
6144 x 3456 (6K)

Blackmagic RAW 3:1 – 323 MB/s
Blackmagic RAW 5:1 – 194 MB/s
Blackmagic RAW 8:1 – 121 MB/s
Blackmagic RAW 12:1 – 81 MB/s
Blackmagic RAW Q0 – 194 to 483 MB/s *
Blackmagic RAW Q5 – 49 to 139 MB/s **

6144 x 2560 (6K 2.4:1)

Blackmagic RAW 3:1 – 240 MB/s
Blackmagic RAW 5:1 – 144 MB/s
Blackmagic RAW 8:1 – 90 MB/s
Blackmagic RAW 12:1 – 60 MB/s
Blackmagic RAW Q0 – 144 to 359 MB/s *
Blackmagic RAW Q5 – 37 to 103 MB/s **

5744 x 3024 (5.7K 17:9)

Blackmagic RAW 3:1 – 264 MB/s
Blackmagic RAW 5:1 – 159 MB/s
Blackmagic RAW 8:1 – 100 MB/s
Blackmagic RAW 12:1 – 67 MB/s
Blackmagic RAW Q0 – 159 to 395 MB/s *
Blackmagic RAW Q5 – 40 to 114 MB/s **

4096 x 2160 (4K DCI)

Apple ProRes 422 HQ – 117.88 MB/s
Apple ProRes 422 – 78.63 MB/s
Apple ProRes 422 LT – 54.63 MB/s
Apple ProRes Proxy – 24.25 MB/s

3840 x 2160 (Ultra HD)

Apple ProRes 422 HQ – 110 MB/s
Apple ProRes 422 – 73.6 MB/s
Apple ProRes 422 LT – 51 MB/s
Apple ProRes Proxy – 22.4 MB/s

3728 x 3104 (3.7K 6:5 anamorphic)

Blackmagic RAW 3:1 – 176 MB/s
Blackmagic RAW 5:1 – 106 MB/s
Blackmagic RAW 8:1 – 67 MB/s
Blackmagic RAW 12:1 – 45 MB/s
Blackmagic RAW Q0 – 106 to 265 MB/s *
Blackmagic RAW Q5 – 27 to 76 MB/s **

2868 x 1512 (2.8K 17:9)

Blackmagic RAW 3:1 – 67 MB/s
Blackmagic RAW 5:1 – 41 MB/s
Blackmagic RAW 8:1 – 26 MB/s
Blackmagic RAW 12:1 – 17 MB/s
Blackmagic RAW Q0 – 41 to 101 MB/s *
Blackmagic RAW Q5 – 11 to 29 MB/s **

1920 x 1080

Apple ProRes 422 HQ – 27.5 MB/s
Apple ProRes 422 – 18.4 MB/s
Apple ProRes 422 LT – 12.75 MB/s
Apple ProRes Proxy – 5.6 MB/s

Recording Formats
Blackmagic RAW 3:1, 5:1, 8:1, 12:1, Q0 and Q5 at 6144 x 3456, 6144 x 2560, 5744 x 3024, 3728 x 3104 and 2868 x 1512 with film, extended video, video dynamic range or custom 3D LUT embedded in metadata.
ProRes at 4096 x 2160, 3840 x 2160 and 1920 x 1080 with film, extended video or video dynamic range or custom 3D LUT.

Storage rates based on 30 frames per second.
* Constant Quality setting Q0 storage rates quoted are indicative only, based on a 2:1 – 5:1 compression range.
** Constant Quality setting Q5 storage rates quoted are indicative only, based on a 7:1 – 20:1 compression range.
Actual storage rates are entirely dependent on image subject matter.

Software

Software Included
Pocket Cinema Camera 6K Operating System.

Operating Sytems

Mac 10.13 High Sierra
Mac 10.14 Mojave or later.

Power Requirements

Power Supply
1 x External 12V power supply.

External Power Input
1 x 2‑pin locking connector.

Battery Type
Canon LP-E6.

Battery Life
Approximately 45 minutes
(recording 6K RAW at 24 fps to CFast 2.0 with screen brightness at 50%)

Power
12V-20V.

Accessories

Optional Accessories
Blackmagic Pocket Camera Battery Grip.

Physical Specifications

Environmental Specifications

Operating Temperature
0°to 40°C (32° to 104°F)

Storage Temperature
-20°to 45°C (-4° to 113°F)

Relative Humidity
0% to 90% non-condensing

What’s Included

  • Blackmagic Pocket Cinema Camera 6K
  • Lens turret dust cap
  • Camera strap
  • 30W power supply with locking connector and international adapters
  • LP‑E6 battery
  • Welcome booklet
  • DaVinci Resolve Studio activation key

Warranty

Product Warranty
12 Month Limited Manufacturer’s Warranty.

Blackmagic Design Cinema Cameras and Accessories In Stock Now At TMS.

Texas Media Systems is a licensed dealer of Blackmagic Design products. Shop all Blackmagic products below.  

Blackmagic Pocket Cinema Camera 4K

Next generation 4K camera with dual native ISO up to 25,600, full 4/3 HDR sensor, 13 stops of dynamic range, Blackmagic RAW recording to internal SD/UHS‑II and CFast cards, as well as a USB‑C expansion port for recording to external drives and more!

$1,295

Blackmagic Pocket Cinema Camera 6K

Next generation 6K camera with dual native ISO up to 25,600, Super 35 HDR sensor, 13 stops of dynamic range, Blackmagic RAW recording to internal SD/UHS‑II and CFast cards, as well as a USB‑C expansion port for recording to external drives and more!

$2,495

Blackmagic Pocket Camera Battery Grip

Battery extender and hand grip for Blackmagic Pocket Cinema Camera lets you shoot for over 2 hours on a single charge!

 

 

$245

LP-E6 Battery

LP-E6 compatible Lithium-Ion rechargeable battery. For use with Blackmagic Micro cameras and Blackmagic Pocket Cinema Camera.

 

 

$45

Mini XLR Adapter Cables

Adapter cable for connecting to professional audio equipment which use full size XLR connectors.

 

 

$39

Blackmagic Pocket Camera DC Cable Pack

Now you can conveniently power your Pocket Cinema Camera from a variety of different power sources. Pack includes D-tap to 2-pin, 2.5mm barrel to 2-pin and 2-pin to fly lead to create your own custom cables. All cables are 650mm long.

$55

Want to know more about the Blackmagic Pocket 6K Cinema Camera?

Check out TMS Media Consultant Ross Grasse’s Pocket 6K blog post at the link below
Focusing With The New Blackmagic Design Pocket 6K Camera

Touch Focus Upgrade Kit for C300 Mark II

Original Canon C300 Mark II owners with the clam-shell monitor can easily add Touch Focus with the Touch Focus Upgrade Kit.

CANON C300 MARK II EF TOUCH FOCUS UPGRADE KIT FOR ORIGINAL C300 MARK II CAMERAS $1299

Canon C300 Mark II EF Touch Focus Upgrade Kit Includes the following items:

Canon LM-V1, Touchscreen LCD 2417C001
CANON MA-400 MICROPHONE ADAPTER  0873C001
Mount To Shoe Adapters
Micro Ball Head

You’ll re-use the UN-5 cables that were supplied with the C300 Mark II.

You’ll need to update the C300 Mark II firmware to enable support for the LM-V1:

Canon C300 Mark II Firmware Version 1.1.1.1 or 1.1.2.1.00 

Here’s a video from Canon that shows the Canon C300 Mark II Touch Focus:

Canon C300 Mark II Touch Focus Upgrade Kit

 

Canon C300 Mark II Touch Focus Side View of MA-400 & LM-V1

 

Canon LV-V1, MA-400, Micro Ball Head, & Mount to Show Adapters

 

RED Product Updates

 

RED Product Updates
August 2019

 

Price Increases:

RED LCD/EVF Adapter A 720-0035 Increased from $195 to $250

RED LCD/EVF Adapter B 720-0038 Increased from $195 to $250

RED S35 Al Canon EF Mount 725-0026 Increased from $700 to $900

RED VV Al Canon EF Mount 725-0030 Increased from $750 to $950

RED Gold Mount Battery Module 720-0053 Increased from $750 to $950

RED S35 Al Nikon Mount 725-0040 Increased from $800 to $950

RED Quick Release Platform Pack 790-0183 Now includes 790-0904 Mounting Plate.  Increased to $1350

RED S35 Standard OLPF 790-0513 Increased from $295 to $350

Discontinued:

RED Top Handle 720-0035 2x Available $550.00

RED Outrigger Handle 720-0044 2x Available $550.00

RED Bolt Kit 790-0445 1x Available $50

RED V-Lock Battery Module 720-0052

RED S35 Ti PL Mount 725-0022

RED S35 Ti Canon EF Mount 725-0032 $2000.00

RED Motion Mount S35 Ti Canon EF 725-0038

RED Motion Mount S35 Ti PL 725-0039

RED BRICK Power Package RED Brick Battery and Charger available for individual purchase.

RED REDVOLT-V 43Wh Battery 740-0043

RED AC Power Adapter 150W 740-0047

RED Arm 5″ 790-0052

RED Arm 9″ 790-0073

RED DOVETAIL Mounting Plate 790-0083 Long

RED DOVETAIL Mounting Plate 790-0084 Short

RED Universal Mount 19mm 790-0085

RED 15mm Adapter Centered 790-0086

RED Mounting Plate 790-0094

RED Travel Charger 790-0134

RED 3BNC-to-00 LEMO Sync Cable 790-0154

RED 4-Pin XLR-to-DSMC Power Cable 30″ 790-0165

RED 4-Pin 00-TO-FLYING LEAD 780-0187

RED PL Mount Body Cap 790-0201

RED Modular Assault Plate Pack 790-0024

RED Front Body Cap 790-0256

Red SIDEWINDER Custom 790-0440-C.  Non-Custom SIDEWINDER 790-0440 still available for purchase.

RED EVF Mounting Plate 790-0520

RED AC Power Adapter Pack 790-0638

RED LCD/EVF Cable Right-to-Straight 4′ 790-0644

RED LCD/EVF Cable Right-to-Right 12″ 790-0645

RED LCD/EVF Cable Right-to-Right 18″ 790-0649

RED LCD/EVF Cable Right-to-Right 24″ 790-0651

Canon XF705 Video Tutorial Series

Canon’s new XF705 4K Camcorder has a new Tutorial Series, Canon XF-705:  From Prep to Post, just released today on YouTube.

The five videos feature Charles Zablan, Senior Trainer for Canon USA, showing how to customize and use the feature settings in the Canon XF705.

Canon has also announced new lease financing promotional interest rates available through Canon Financial Services.

0% 12 Months

0% 24 Months

1.99% 36 Months

Episode 1: XF-705 Function, Form, and Design

Episode 2: Canon LOG 3—Expanding the Possibilities

Episode 3: Advancing Forward – Technology Driving the XF-705

Face Detection, Tracking, Continuous AutoFocus, and Push AF

Episode 4: IP Streaming on the XF-705

Built In Ethernet Port on Camera with Efficient XF-HEVC Codec

Episode 5: Canon XF-705 Custom Picture Menu

 

CANON XF705 4K 60P 4:2:2 10-BIT PROFESSIONAL CAMCORDER $6,999

 

 

RED Mini-Mag 480GB Drives In Stock

RED Mini-Mag Drives 480GB In Stock.

$1850 with Free Shipping from Austin Texas.

The RED Mini-Mag 480GB Drive is currently the most popular size Mini-Mag Drive with RED Camera Operators.

RED MINI-MAG 480GB 750-0090

SKU 750-0090 currently Sold Out at the RED Store.

The RED Mini-Mag is compatible with the following RED Digital Cinema cameras:

  • DSMC2 MONSTRO
  • DSMC2 HELIUM
  • DSMC2 GEMINI
  • WEAPON 8K VV
  • WEAPON 8K S35
  • WEAPON 6K EPIC-W
  • SCARLET-W
  • RAVEN 
  • EPIC/SCARLET DRAGON
  • EPIC/SCARLET M-X

You’ll need one RED Station Mini-Mag USB 3.1 Reader SKU# 750-0084 to copy footage from your camera to your computer.  The RED Station is available and in stock for $195 at Texas Media Systems.

 

RED Simplifies Camera Lineup & Reduces Prices

RED DIGITAL CINEMA announced a new simplified camera lineup. The new camera lineup consists of a single BRAIN, the DSMC2, with three sensor options (Monstro 8K VV, Helium 8K S35, Gemini 5K S35) at lower price points. The RED WEAPON and EPIC-W cameras are no longer available.

Meet RED’s New DSCMC2 Camera Lineup:

RED DIGITAL CINEMA DSMC2 CF BRAIN W/ MONSTRO 8K VV  $59,500

RED DIGITAL CINEMA DSMC2 BRAIN W/ MONSTRO 8K VV AND AI PL MOUNT  $54,500

RED DIGITAL CINEMA DSMC2 BRAIN W/ HELIUM 8K S35 SENSOR $24,500

RED DIGITAL CINEMA DSMC2 BRAIN W/ GEMINI 5K S35 SENSOR  $19,500 

Lease to own options are available.

Online Lease Application

When you upgrade the firmware on your existing camera to v7.0.3 or later, the name of your camera will now change when you navigate to:

Menu > Settings > Maintenance > System Status > Camera Info

Current Camera Name New Camera Name in v7.0.3
WEAPON MONSTRO 8K VV DSMC2 MONSTRO 8K VV
WEAPON RED DRAGON 8K VV DSMC2 DRAGON 8K VV
WEAPON 8K VV ANAMORPHIC DSMC2 DRAGON 8K VV ANAMORPHIC
WEAPON 8K S35 DSMC2 HELIUM 8K S35
WEAPON 8K S35 MONOCHROME DSMC2 HELIUM 8K S35 MONOCHROME
WEAPON 6K (CARBON FIBER) DSMC2 DRAGON 6K S35 (CF)
WEAPON 6K (MAGNESIUM) DSMC2 DRAGON 6K S35 (Mg)

The following cameras are eligible to be upgraded to the new DSMC2 MONSTRO, DSMC2 HELIUM, DSMC2 GEMINI Cameras:

  • WEAPON HELIUM 8K S35
  • EPIC-W HELIUM 8K S35
  • WEAPON RED DRAGON 6K
  • EPIC-W GEMINI 5K S35
  • SCARLET-W RED DRAGON 5K
  • EPIC DRAGON
  • SCARLET DRAGON

The following cameras are NOT eligible to upgrade to the DSMC2 MONSTRO, DSMC2 HELIUM, or DSMC2 GEMINI Cameras:

  • RED ONE
  • EPIC MYSTERIUM-X
  • SCARLET MYSTERIUM-X
  • RED RAVEN

Pricing and Specifications for the RED Raven and RED SCARLET cameras remained unchanged:

RED DIGITAL CINEMA RAVEN BRAIN WITH 4.5K DRAGON SENSOR  $8950

RED DIGITAL CINEMA SCARLET-W WITH RED DRAGON 5K SENSOR (STANDARD OLPF)  $12,500

For more information on any of the products above, give us a call at 512-440-1400 to speak with a sales rep!

Panasonic EVA1 Promotion: Two Free 64GB SD Memory Cards $499.98

Panasonic EVA1 Promo

Buy a new Panasonic EVA1 and get Two Free 64GB V90 SD Memory Cards for Free.

Promo can be combined with with 0% 24 Month Lease Financing Offer.

Promo can be used on the following EVA1 body or kits:

Panasonic EVA1 Body, AU-EVA1PJ $7345

Panasonic EVA1 Basic Bundle, AU-EVA1BASIC, $9795

Panasonic EVA1 Pro Bundle, AU-EVA1PRO, $12795

Panasonic RP-SDZA64GAK V90 class 64GB SDXC memory card $249.99 

Lease Financing at Texas Media Systems

Promotion Rules – Effective for AU-EVA1 cameras purchased between April 1, 2018 – June 30, 2018

AU-EVA1 must be purchased from authorized Panasonic US Resellers and shipped to a US address

End-Users must fill out online application at www.PanasonicPSSNARebate.com

End-Users will need to provide camera serial number and a photo or scan of the original camera purchase invoice

Online form must be submitted by July 31, 2018

Delivery only to US addresses

Panasonic reserves the right to substitute equivalent or higher performance Panasonic SDXC or MicroP2 V90-class memory cards

AU-EVA1 is the only camera eligible for this offer

This offer is not valid on used, demo, b-stock or other specially priced equipment.

Canon C200 & C200B Training Videos

Canon C200 & C200B Video Training Series:

Jem Schofield Canon C200

Camera Overview

Host Jem Schofield gives an overview of the Canon C200 and C200B digital cinema camera systems. This episode explains the differences and similarities of the two models, takes a look at the design features, external accessories, sensor, processors, recording capabilities, touchscreen LCD, electronic viewfinder, inputs and outputs. Get familiar with the location and functions of the camera’s buttons, dials and controls.

Setting Up for Shooting – Part 1

In this episode, host Jem Schofield explains the Function (FUNC) button controls, examining White Balance, Iris and Shutter control, and the options when adjusting white balance, shutter, gain and aperture to achieve great results.

Setting Up for Shooting – Part 2

Explore some of the key Menu features and how to set up the Menu for your projects. Host Jem Schofield looks at buttons, dials and switches, activating LUTs, saving and loading camera settings, time code, video outputs, assignable buttons, the Status menu, My Menu features, and more.

Audio Setup

Host Jem Schofield explains the audio recording and monitoring capabilities of the Canon EOS C200 and C200B cameras. He walks you through setting up either 2-channel or 4-channel recording, and shows how to adjust and monitor the microphone levels using the Mic terminal, XLR inputs and camera body microphone.

Shooting with the Camera

In this video, host Jem Schofield demonstrates strategies for shooting with the Canon EOS C200 and C200B for best results. He goes in-depth about shooting with the cameras including the Focus Guide, focus assistance functions, recording formats (Cinema RAW Light/MP4), Color Space, Gamma and Custom Pictures/HDR settings, HDR/LUT options, exposure recommendations using the waveform, proxy recording, and more.

Dual Pixel CMOS Autofocus Features

In this video, host Jem Schofield demonstrates the key features of Dual Pixel CMOS Autofocus and touchscreen control of autofocus to get you ready for shooting with this important camera option.

Special Recording Modes & Browser Remote

Take a close look at Special Recoding Modes and explore the options for remote control operation of Canon’s EOS C200 and C200B camera systems. Host Jem Schofield takes a close look at slow motion recording options based upon recording format. Also, look at how to remotely operate the cameras when they are out of reach by using the Browser Remote feature and a computer, smartphone, or tablet.

Cinema RAW Light & Post Production

Host Jem Schofield is joined by post-production experts Loren Simons and Nicholas Recano to explore the best practices for working with Cinema RAW Light in a variety of post-production workflows including Cinema RAW Development software, BlackMagic Design DaVinci Resolve, and Avid Media Composer. Also, visit Canon Burbank’s DI Suite to examine at the intricacies of finishing a project with an OpenEXR/Aces finish using SGO’s Mistika color grading and finishing system.

CANON C200 DIGITAL CINEMA CAMERA 4K RAW INTERNAL – 2215C002 $7499

CANON C200B DIGITAL CINEMA CAMERA BODY W/O EVF – 2216C002 $5999

CANON C200B COMPLETE:

C200B + GR-V1 Grip, HDU-2 Handle, LM-V1 LCD, LA-V1 Attachment Unit, UN-5 Cable $7499

Canon C200 Leasing Apply Online Button

 

 

View Original Canon Digital Learning Center Article

 

 

 

Panasonic EVA1 Video Series with Mitch Gross

Panasonic has produced a new series of educational videos for the new EVA1 5.7K Cinema Camera featuring Mitch Gross, Cinema Product Manager at Panasonic Media and Entertainment Company.

The series of nine videos are available on YouTube at the links below.

Panasonic EVA1 5.7K Sensor: Learn What It Means for the Image:

Panasonic EVA1 Modularity: Learn How The Camera’s Modular Design is Useful for Shooting

Panasonic EVA1 Focus Aides: Learn How the Camera’s Numerous Focus Aides Interact to Support the User’s Preference

Panasonic EVA1 Video Routing: Learn How to Adjust the Camera’s Multiple Video Outputs

Panasonic EVA1 Wi-Fi Remote:

Learn How to Remotely Control the Camera’s Menu Functions using an IOS or Android Device

Panasonic EVA1 Image Stabilization:

Learn About The Multiple Forms of Image Stabilization Supported

Panasonic EVA1 Dual Native ISO: Explains the Cameras 800/2500 Dual Native ISO Functionality

Panasonic EVA1 Media: Learn About Recording to Inexpensive SDXC Cards

Panasonic EVA1 Menus: Offering Multiple Paths to Control & Interface with the Camera

Panasonic EVA1 Camera Body

In Stock!

$7345

Free UPS Ground Shipping