Zeiss Exo lenses pros and cons

December 22nd, 2016

exo lens

 

exo lens 1

 

 

 

 

The good

The Zeiss name lives upto its standard.

The Iphone lenses deliver excellent photo quality & video quality.

No artifacts and great sharpness. No distortion and vignetting.
The lenses are well constructed in aluminum and glass. The frame to hold the lenses is sturdy.
The bad

The screw mount can be awkward for quick swaps.

The bracket mount blocks the camera’s flash and

you’re bound to lose the tiny back caps. And they’re pretty expensive.
The bottom line

Great lenses that have increased the flexibility of shooting on the Iphone. A great set of lenses for serious photographers who are ready to spend. The lenses will be a big boon for guerilla film makers, people web streaming using iphones etc.

 

Zeiss EXO lenses for the Iphone

December 22nd, 2016

The old saying “you get what you pay for” definitely applies to Zeiss’s new ExoLens system.

exo lens

 

The lenses are all sharp, with no light loss or color artifacts. It combats nasty problems like distortion, vignetting and chromatic aberration. As you’d expect, the lenses are well constructed of aluminum and glass. In fact, with their bundled lens hoods attached, they look like a set of miniature of the Zeiss’ high-end Otus line.
We at Accord Equips, are often asked why should someone buy or rent such expensive lenses? These lenses, though expensive, will add lots of flexibility to Mobile photographers and mobile filmmakers. Iphone has one of the best cameras and these lenses are the perfect partners for Iphone photography.

 

The Exo lenses screw onto a sturdy metal frame that is easily slip on and off your phone. It includes a 1/4-inch tripod mount socket and a slot on the top for attaching other accessories, such as an external flash etc. Mind you, the frame can be mounted only after stripping the Iphone cover.

 

 

 

Presently 3 lenses are available :      exo lens 1

The wide lens (0.6X)

The Exo wide angle gives you scene coverage equivalent to roughly 18mm. There’s the normal distortion you get around the edges of wide-angle lenses, but surprisingly little flare or fringing.

 

The Telephote lens (2X)

The telephoto lens is equaivalent to 56mm. Its great for portraits, something that the normal lens isn’t great for.

 

The Macro lens

And the macro lens works at various focus distances — unlike most phone macros — allowing for image coverage of 1 to 4 inches. It can be a little tricky at first to dial in the manual lens focus while the iPhone tries to auto focus, but it’s quick to master.

 

While the lenses are great, the screw mount can be awkward for quick swaps, the bracket mount blocks the camera’s flash and you’re bound to lose the expensive tiny back caps.

 

Are the Exo lenses worth their money? We felt that they will be a big boon for guerilla film makers, people web streaming using iphones etc. So yes, worth the money for serious photographers and film makers.

Can lens stabilisation blur the picture ?

October 25th, 2016

IS

Keep the Lens Stabilisation ON only when the camera is handheld.

Many camera lenses come with some kind of lens stabilization technology. Nikon calls it  (VR) or Vibration Reduction” & Canon calls it IS or Image Stabilization” It helps to stabilize our image when you’re forced to hand-hold your camera; so do we keep it on all the time ? The answer is NO.

You should always make sure to turn it OFF when your camera is on a tripod.

How does the stabilization technology work ? The stabilization technology works by unlocking part of your lens. This helps the lens to “correct” movements. But, when your camera is sitting still on a tripod, the stabilizer will often look for movement that isn’t there, resulting in a blurry photo. See the example below in which camera was locked onto a stable tripod. In the image on the left,  the lens stabilization turned OFF. And, then it is turned ON for the image on the right. Untitled-1Untitled-2

In both the photos all parameters were the same, the only difference was that lens stabilization was turned ON in the photo on the right.

Sony E mount 85mm G master Block lens

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

 

GoPro Camera (Hero 4 & Hero 3+)

August 22nd, 2016

 

 

 

 

 

 

 

…                                                                            Hero 4 Black                                      Hero 3+ Black

Weight/weight with housing                     88g/152g                                             74g/136g

Video mode /Max frame rate                   4K / 30fps                                          4K / 15 fps
…                                                                          2.7K / 50 fps                                     2.7 K / 30 fps
…                                                                         1440p / 80 fps                                   1440p / 48fps
…                                                                         1080p / 120 fps                                1080p / 60 fps
…                                                                         960p / 120 fps                                   960p / 100 fps
…                                                                         720p / 120fps                                    720p /120fps

High Bitrate (H.264)                                   60Mb/s                                                 45 Mb/s

Protune                                                            Video + Photo                                    Video

High Light Tag                                               Available                                               -

Wifi                                                                      Available                                             Available

Bluetooth                                                        Available                                               -