Archive for the ‘Film making’ Category

6 Tips To Choose A Perfect Lens For Your Camera!

Friday, February 9th, 2018

 

which lens

A camera helps to capture the world around and a lens is what plays the main role to help you do that perfectly. The quality and the type of lens surely make a difference in the image captured. Whether it is about buying a dash cam or a nanny cam with audio, if you are deciding to add a new camera to your kit, just read these tips to help you choose the perfect lens.

  1. 1.      What do you want to shoot?

This is the first and the most basic question that should be asked before you jump into the technical specifications of the lens. The type of lens you should buy depends on what you are going to shoot with it, whether it is landscapes, portraits, architecture, birds, wildlife, sports or other subjects.

 

  1. 2.      Decide the budget

Cost is of course, always a factor to be considered. Cost of a lens depends on the aperture, focal length, and other specifications. An expensive lens has a fixed aperture i.e.  no matter how much you zoom the aperture remains fixed, unlike the less expensive ones which have a variable aperture. A variety of lens is available to suit the budget and the aperture and focal length requirements.

 

  1. 3.      Aperture of the lens

The aperture of a lens determines how much light can the lens let in and is a number written on the lens.

  • Wide aperture: Smaller the number, wider the aperture. A wide aperture captures more light and hence can take photographs even when the light available is less but makes the image less sharp.
  • Narrow aperture: Larger the number, narrower the aperture. In contrast to the wide aperture lens, it captures less light but provides a greater depth of the field.

 

  1. 4.      Focal length

It determines how far can you zoom in. Larger the number more will be the magnifying power of the lens. It is a prominent aspect of a lens irrespective of whether you are going for a dash cam or a nanny cam with audio.

 

  1. 5.      Stabilization

Having a stabilized lens is an expensive deal but it lets you take sharp shots even in varying lighting conditions and eliminates camera shake.

 

  1. 6.      Perspective

Visual perspective is, of course, an important part when you wish to tell a story through your capture. It may happen that when you are shooting a tall building and you shift the lens upward, the building shape gets distorted showing a thinner top and a wide bottom, unlike the reality. This simply means the perspective being captured is not correct and hence a lens needs to be such that it can correct the perspective and show the true picture.

 

Buying a lens for your camera is a huge investment. Once you have invested in the camera, the next is the lens which should be chosen wisely and the above tips will definitely help. Follow the tips and save yourself from the regret which may follow a wrong purchase!

 

About The Author

Rachel Stinson has always had a knack for writing, food, fashion, and places. Blogging has combined all four for her with an added bonus of enthusiastic audiences. She expertly analyzes real estates, restaurants and electronics stores with respect to pricing and people involved and can express her opinions in an unhesitant, engaging manner for all matters.

Differences between the Sony FS7 and FS7 II

Monday, May 8th, 2017

 

Subject

FS7

 

FS7

FS7 II

sony fs7 ii 500

Changed ND filter ND filter with 4 levels Electronic Variable ND filter from ¼ to 1/128
Changed E Mount Standard E mount E mount locking mechanism
Improved Colour space Rec 709 Rec 2020 (same as F5) so get better colours
Added Power LED NA Above the on off switch to show if the camera is on
Thumb Screw on grip arm extension Required a screw driver No screw driver required to control
Assignable User buttons 6 10
Changed Recording card holder Sticks out 4.3mm more for easier removal
Changed big viewfinder loupe One of the two flimsy loupe attachments has been removed. They also added a nice foldable sun hood as an alternative to the loupe when using the LCD in sunlight.
Changed LCD attachment The round rod with a square one, so the LCD doesn’t tilt so easily.

What hasn’t Changed

Super  35 sensor, 4k DCI resolution upto 60fps, internal Slo mo till 180 fps,

Electronic Variable ND filter

While the FS7 has 4 levels of ND, The FS7 II gets the an electronic neutral density filter which is continuously variable from 1/4 to 1/128 strength. It can also be completely disengaged when unneeded and is automatically replaced with a clear glass.

 

The Electronic ND works in 3 ways

1. You can preset the four-position filter wheel to whatever fixed discreet levels of ND you want – in a similar way to the way you can assign values on the gain switch on other models. This allows you to work in much the same way as you would with a conventional ND filter wheel, with rapid ND changes if you need them.

2. Alternatively you can use a thumbwheel to vary the ND continuously, through seven stops of correction. This is essentially a better version of a front mounted variable ND filter, but without the drawbacks.

3. You can use automatic ND for auto exposure without varying f-stop, gain, or shutter speed. The electronic neutral density control doesn’t affect the color the way a regular ND fader filter on the front of a lens does, and it quickly becomes your primary exposure control, allowing you to work at a constant aperture in almost all situations.

E mount locking Mechanism

 

The innovation about the E-Mount Lever Lock mechanism makes it very similar to the PL mount system used in cinema productions: instead of turning the lens you now turn the collar.

 

This helps lock lenses more tightly and is ideal for large camera setups such as when you have a matte box and follow focus setup, as you don’t need to twist the lens.

This mount is ideal for cinema, large lens setups and also when the camera is on a tripod but could be challenging to use single handedly.

 

Tool-less operations

The FS7 II’s “tool-less” mechanical design lets users make on-the-fly changes to the camera’s set-up and operation. For example, no tools are required to adjust the Smart Grip or viewfinder positions

 

Changed Microphone mount

 

The microphone mount is now runs on a 15mm rod, rather than being fixed on the rod as on the FS7. The mount has been modified for better noise isolation from handling. The new mount allows you to use a microphone either on top, or slightly underslung closer to the lens.

 

Changed View finder mount

The viewfinder mount’s front and rear adjustment has been changed from a round rod, to a very slightly longer squared-off tube that will ensure that the viewfinder stays in a horizontal orientation. The earlier circular rod has been provided for users preferring the old one.

 

In the nutshell, a few changes making it primarily useful for feature film makers. Documenatry and smaller film crews will continue to prefer the older version

 

 

Sony E mount 85mm G master Block lens

Thursday, September 1st, 2016

1454514360000_1222775     tumblr_o2u8utiuBw1riqz0xo1_500

 

Lens Sony 85mm Block
Mount E mount
F 1.4
Min focus distance 80cm
Blades 11

 

Overall

Sony E mount 85mm G master Block lens gives great sharpness and Bokeh & capture great details. So it’s a great lens.

 

Advantage of Sony E mount lens

-          Native AF system.

-          Benefits from all of Sony’s features including Eye AF

-          Works perfect with Sony A7s II, Sony A7R II, A7R, A7s etc.

 

AF / MF switch

-          AF/MF switches

-          Programmable Fn button (defaults to Focus Hold).

One can set the button to activate Eye AF for natural and easy access to the setting during use.

 

Operations

-          Rubberized focus ring helps you operate the lens smoothly

-          Improved focus-by-wire system helps these lenses to have a more natural feel does not seem to ramp up or down in speed depending on how fast you turn it.

 

Aperture ring

-          The integration of a physical aperture ring, allows to be clicked or de-clicked with a switch which makes it a great option for video shooters, as well as photographers.

 

Physical details

-          The small ridge on the bottom of the lens ensures that the lens’s aperture and focus rings are not lying directly on any surface when the camera is laid down.

 

Some Cons

The lens is slower than other native options due to the use of an older, and louder, Linear SSM system to move the large elements precisely, which could be changed by using the Direct Drive SSM available in many current models.

 

Chromatic Aberration at F1.4

There is a noticeable amount of chromatic aberration on high-contrast edges at f/1.4 which could of course be easily corrected in post

 

Tips : It gets better as you stop down, peaking at about f/4-5.6, where it will optimize the performance. Vignetting is also very well controlled and flare is nonexistent.

 

Focus Ring

There are still no witness markings on the lens and no hard end stops which makes them less appealing for use with follow and remote focus units.

They would work well with smaller handheld gimbals rather than larger Steadicams and gimbals

 

Canon 5D Mark IV – Unconfirmed Specs

Friday, August 19th, 2016

Canon-EOS-5D-Mark-IV

Sensor : 30.4 mp or is it 28 mp

Frame rate : 7 fps

4K at 25/30 fps (120 fps at 2K)

Processor : Digi 6+

Dual Pixel Raw AF

4:2:2 / 500 mbps

So after seeing the success of Sony A7S ii, has Canon fallen back in the race ?

The basics of 360 videos

Thursday, August 4th, 2016

 

360 degree videos are moving well in a big way globally, across social media platforms, video channels, industries, and just about anywhere else videos can be used. Giving viewers a immersive viewing experience of 360 degree videos. They can be used anywhere from face book to YouTube, editorials to businesses, the world has turned to 360 degree videos to engage audiences in an interesting way.

 

 

1

 

Kindly click on the image above to get an idea of creating a 360 degree videos at a glance.

 

 

Popular 360 cameras

Today, several amateur cameras are available to capture 360 degree videos such as the Ricoh Theta, Samsung 360, Kodak SP360, Bublcam, Nokia OZO, Giroptic 360cam, or one could use the professional set of six GoPro cameras. (see image)

360 Degree Gopro Rig By Accord

 

How are 360 Videos shot

360 degree videos are video recordings of a real-world panorama (wide-angle view),one can record views in every direction at the same time, and shot using an omnidirectional camera or more than 1 camera. It’s like a virtual reality (VR) video except that you need a VR headset to view VR videos whereas you don’t need a special headset to view 360 degree videos.

 

360 video output

Most amateur cameras shoot and create 360 videos on their own, however if you use the professional gopro setup or any other multi camera setup then it would need professional post production before uploading on different medias.

 

How 360 videos are viewed

360 degree videos can be played on a computer; the mouse is used to pan around for a 360-degree surround view and a 180-degree vertical view

 

Examples of 360 videos

 

A 360 surgical training video demo

https://www.youtube.com/watch?annotation_id=annotation_4243919275&feature=iv&src_vid=VAUbacNs4MQ&v=n7ALZkPoTYQ

 

A 360 tourism promotion video

https://www.youtube.com/watch?v=aq9nXIVTkug

 

A 360 film promotion Video

https://www.youtube.com/watch?v=A6aRkhlqWuE

 

They are lately being used in…Virtual product demonstrations, Virtual site inspections, Event marketing etc