Posts Tagged ‘canon lenses’

Canon 100-400 mark II – salient features

Monday, July 18th, 2016

Canon-EF-100-400mm-f4.5-5.6L-IS-II

Canon 100-400 mark II

 3 modes of IS

Mode 1 -  Standard IS mode designed for use with stationary subjects when the Canon 100-400 IS ii & the camera is handheld

Mode 2 – is used for panning with a subject. In this mode, only 1 axis of stabilization is provided – allowing a linearly-moving subject to be tracked. Up and down movement tend to be difficult to track

Mode 3 – is great for action photography. In Mode 3, image stabilization is active and ready for use the moment the shutter releases, but actual stabilization is not in effect until that precise time. You are able to follow your erratically-moving subjects without fighting against image stabilization   The IS system auto-senses a tripod in use

Quick Auto focus The zoom is a quick performer, taking about 0.15 seconds to lock onto the subject when mounted on the Canon EOS 5D Mark III.

Focussing

A completely new inner-focusing system has been implemented in this lens.

A 2-position focus limiter switch is provided, allowing focusing distances to be limited to a specific distance range (9.84′/3m – 8) – or to be unlimited (Full). Limiting the focus distance range can improve focus lock times and reduce focus hunting.

This lens is not parfocal, meaning that refocusing is required after zooming. This is especially true at short focus distances where the subjects very obviously go into and out of focus during zooming. Using the near-parfocal feature of this lens is helpful for video recording while adjusting focal lengths. Video shooters will definitely appreciate the fact that subjects do not significantly change in size as they go in and out of focus

Polariser users will be happy that the 77mm filter thread doesn’t rotate on focus.

Decreased Minimum Focus Distance (MFD) This lens has an MFD of 980mm. (earlier lens MFD was 1800mm)

Increased Magnification This lens has a magnification of 0.31x. (earlier lens MFD was 0.2x)

Build –  This is a solidly built lens

The 100-400 II’s front and rear lens surfaces are fluorine coated to reduce water droplet, dust and fingerprint adhesion and to ease the cleaning effort required. This coating works great – the difference is noticeable.

Push Pull Zoom replaced with rotational zoom -  The rotating zoom ring gives more precise adjustment between focal lengths. The ring comes with a zoom torque adjustment ring allowing you to set the zoom ring from “Smooth” to “Tight” to suit your particular way of shooting.

The final control on the lens barrel is a focus mode switch with the usual AF/MF settings. Note that this lens usefully offers full-time manual focusing even when AF is selected.

Lens elements It has 21 lens elements in 16 groups (up from 17/14) into a telephoto lens design

Air Sphere Coating The new Air Sphere Coating (ASC) had been introduced on this lens. According to Canon: “The new Air Sphere Coating has been developed by Canon to minimise reflections and flare.

In the nutshell : The Canon EF 100-400mm f/4.5-5.6L IS II is a worthy replacement to the original 100-400. Not to forget the original 100-400 continues to be a great lens.

Sony A7s ii – Our take

Friday, May 13th, 2016

sony-alpha-a7-ii copy

 

Sony A7s II is great for shooting documentaries (due to its low light capability) and for films (due to its 4k capability with Slog 3)

It is markedly improved over the A7S. The newer version adds

- Built-in 5-axis image stabilization

- Records 4K video internally with full pixel readout (on SDXC memory cards)

- Records S.log 3

- Bigger Magnesium Alloy chassis gives better grip

Video record button can now be set to a function button  sony a7s II

Other advantages

- High ISO – 100-102,400. Goes upto 409600. (Good results upto 64000)

- Built in wifi capability to connect with a smart phone or tablet

- Records 120fps at full HD

- Possible to charge the camera via USB port

- Sensor – 35 mm full frame (35.6 x 23.8 mm), Exmor CMOS sensor

Recording format

- A7S II uses a 12.2MP full-frame chip (4,240 x 2,832 pixels)

- Records on XAVC-S codec at 3,840 x 2,160/25p at 100 Mbps / 8 bit

- Colour sampling 4:2:0

Lens Mount:  E-mount

Audio In: 3.5 mm Stereo minijack

Audio Out: 3.5 mm Stereo minijack

Video Out: micro-HDMI

Battery: Rechargeable battery pack NP-FW50

 

 

Shallow depth of field – Simplified

Wednesday, February 3rd, 2016

 

 

 

 

 

 

 

Depth of Field (DOF) is a description of how much of your picture / video is in focus.

A shallow depth of field simply means that one specific area of your image is tack sharp while other elements remain blurred.

Factors for getting Shallow depth of field

Lenses with lower F (Canon 85mm F1.2 would give better  shallow depth of field compared to 85mm F1.8)

Cameras with larger sensors (Canon 5d mark 3 (full frame) give better shallow depth of field  compared to Canon 7d (APS-C sensor)

 

Canon 1DC – 4K : Our Take

Monday, February 1st, 2016

canon 1 dc by Accord Equips

Our Take
Easy to use
Good in low light
C Log
Large clear LCD
Pal Format : 50 fps at 1080p
NTSC Format : 60 fps at 1080p

Please note
Poor battery run time and low capacity considering
physical size
Focus assist not designed for video shooting, no peaking.

Overall
The 1DC has it all, amazing 4K, really good build quality
and ergonomics, unreal low light performance.

The perfect tool for filmmaking and commercial production

Compare Prime Lens Vs Zoom Lens

Monday, January 11th, 2016

Deciding between prime & Zoom lenses?

canon-85mm-lens Canon 24-70 F2.8 L2

A prime lens can’t zoom. If you want to move closer or farther away with a prime, you move your legs ahead or behind

A zoom lens does what you might expect: it zooms in and out, allowing you to magnify your subject.

 Why Prime Lenses ?

canon-85mm-lens

Primes are cheaper than zooms for the same quality due to lower number of moving parts and simpler construction. While there are many expensive prime lenses also the Canon & Nikon 50mm are completely value for money lenses

Primes have a wider aperture (lower F stop number) than zoom lenses within the same price range, hence they have a better low light performance

Primes perform better for specific functions

Primes are lighter in weight than zooms in the same focal length due to their simpler construction

Why zoom Lenses?

Canon 24-70 F2.8 L2

Zoom lenses are better for portability because, one lens can serve the purpose of 2-3 prime lenses

Zooms lenses are super for shooting on the go. Zoom in or out, get a different magnification and continue shooting

Zoom lenses work very well in quick on the go shoots like weddings, sports etc

Deciding between Prime & Zoom Lenses

Choose a Prime Lenses if you are going to shoot in low light conditions, have a sort of fixed sort of area and have the time for setting up your shot and change lenses.

Choose a Zoom Lens if you are shooting on the go, don’t want too many lens baggage, have an unwillingness to change lenses