Showing posts with label cameras. Show all posts
Showing posts with label cameras. Show all posts

Thursday, 10 November 2011

shutter speed test using Fader ND

I was extremely excited about the ND Fader, a variable neutral density fader that attaches to the front of the lens, because it offered an alternative using the iris or shutter speed to control the light / exposure. As we know shutter speed effects the blur or lack there of. Films have traditionally been shot at twice the frame rate, i.e. 1/48 sec if using 24 fps, giving a smooth look to the motion. This is what we are used to seeing and may seem like a natural look. Some movies and music videos, however, looking for a different look shoot at faster shutter speeds.

To achieve the desired shutter speed while maintaining a certain aperture speed (and iso) we use ND filters. Normally video cameras have these built in and film cameras use a matte box with slots for interchangeable filters. I don't yet have a matte box and am putting off getting one until I have to. So I have gone with the cheaper option - screw on nd filters. You can get various fixed ND filter i.e. 2,4,8 or you can get a variable ND fader that works like a circular polarizer - rotate to increase or decrease effect. 

I bought my ND Fader from trademe.co.nz and it isn't the genuine article from france but a cheap Chinese knock-off which is always a risky road to travel but also kinda adds to the excitement. So here I have done some very basic comparisons of video shot at 1/50th, 1/100th, and 1/500 of a second, (using an ND Fader to control the light).

The tests were done on a Canon 5D mk2 with a Canon 24-105mm L lens at f/4 and 25fps.

Note the difference in motion, colour temp, saturation, and flare from sun.

 

Monday, 7 November 2011

my complete shoulder rig for under NZD $1.4k

I have finally assembled my complete shoulder rig, which is more difficult than it seems if you are on a tight budget. My rig includes: Proaim Shoulder Rig, Fotga DP500 Follow Focus, Lilliput 5" HDMI Monitor, 2x batteries, 7" articulating arm.

I ordered the Proaim gear from www.cinecity.co.nz (though I later discovered that the .com site is cheaper). The kit actually includes components to be configured as an off-set shoulder mount to be used with an LCD Viewfinder / Loupe but I prefer to operate with a monitor so I have gone a straight configuration. I was pleased to find the rig was easily adaptable and I had a number of options to choose from.

I ordered the Fotga Follow Focus and Lilliput 5" monitor from www.dhgate.com. I found a seller by the name of Kennyzhu particularly helpful with my inquiries. I also ordered two batteries to power the monitor and an articulating arm and clamp to mount it with. The postage was free and there was no tax either.  The Proaim gear took about a week and a half the dhgate gear only a week.My initial impressions are good and very satisfied the considerable savings made.



Full assembled shoulder rig with follow focus, 5" monitor and rode video mic.


 







FOTGA DP500 Follow Focus. Nice all metal feel. Smooth action with very slight play. USD $145.72











One rubber lens belt included. (Additional belts available from USD $13.00)









Proaim sholder rig NZD$789.00 (including postage and tax)


Lilliput 5" HDMI &YPbPr monitor. 800x400 resolution. limited ratio options. Displays full screen but stretched image on record. Full screen correct aspect ratio playback. Goes blank for about 6 seconds before and after rec. USD $224.61











Rechargeable Lithium Battery 6600mAh + Charger. USD $42.75










7" Articulating arm plus clamp. USD $49.95
























Counter weight

























Riser, Tripod base plate, Camera base plate,

























Extra parts that I am not using in this particular configuration.






















Alternatively you could buy this Redrock Micro Kit from B&H for NZD $4531.00 (not including postage & packaging)

Saturday, 26 March 2011

New Red Epic

Red's new Epic is out said to cost around US $58 K. Peter Jackson pre-ordered a bunch of them to shoot the up-coming Hobbit.



Potential users are getting excited about the Epic's HDR for video technology. HDR is a technique that is used widely in digital photography where two or more photos with different exposures are fused into one thus expanding the image's dynamic range. Follow this link to a good blog post by Prolost which puts the new camera/technology into context.

Friday, 25 March 2011

Sony release NEX FS100

Having just tested Sony's F3 I was interested to learn today that Sony have introduced a new camera targeting the prosumer market.



The NEX FS100 has the same Super 35 sensor as the F3 and is said to costs around US 6K.

Den Lennie from f-stop academy has made this review

this is great news if you are a sony DSLR owner with sony lenses. The rest of us are still waiting for Canon or Nikon to come out with a full frame equivalent.

One significant point of difference is this cameras ability to capture 1080p at 60fps, something very rare at this stage.

So far comments have criticized the AVCHD capture format and the lack of built in ND filters.

Tuesday, 22 March 2011

Hands on - the new Sony F3

I am in Rotovegas at the moment helping my friend Mahanga shoot a 30min doco for Te Waka Huia.

We are shooting on sony's latest PMW F3 with an Angenieux 16-44mm zoom and a Zeiss 60mm prime and recording to a NanoFlash external recorder.  Paul from Nutshell also threw in an Oconner matt box and follow focus.




This is the first time we have used an F3 but the menus are external button are very similar to the EX cameras with which we are familiar. There has been some hype about the F3 due to its Super 35mm sensor, its PL lens mount and its comparatively low price. The Super 35mm sensor is significantly larger than those of the  EX series cameras but smaller than those of full frame cameras such as the 5D. This means a crop factor to 35mm lenses so the effective focal length of our 60mm is 83.something mm.

The NanoFlash is a cool little device that allows us to up the bit-rate of our 1080 HD video from 35 to 100 Megabits per second (or higher) allowing 4:2:2 sub-sampling. learn more about the NanoFlash.

The Angenieux and Zeiss lenses are both superb in picture quality and design and the follow focus really does make a difference. Check out these pix.







The doco will consist mainly of interviews and controlled cut aways. We are using my 5d and prime lens kit as a B kit. Also squeezed into our rental car is a Kino Flow Diva, 2 Blondes, 2 Arri 650's, 5 stands plus 2 C stands, a light dolly system, a couple of macbook pro's and some sound gear.

Setting up and Packing down we felt we were short a couple of crew members but all was forgiven when I discovered my motel room had a spa bath. =)