Andrew Reid

  This was shot on film...     Therefore I have decided film is incapable of producing a filmic image!   The first comment on nofilmschool kind of sums it up   If I was the CEO of Panasonic, I would buy this film and immediately take it down. Then tell these “filmmakers” to stop using the GH4.   Give a hack a camera, and a hack of a film comes out...

Why the hell is this kind of thing annoying?

RichG101, mtheory, jonpais, JohnBarlow and Andy Lee you are now mods :)

  You're very confused aren't you.   It isn't all about aperture and you're really highly dramatising any issues. Soft corners, vignette, purple fringing, are really not much of an issue compared to the lens used normally wide open on a larger sensor. In fact the image in the centre of the frame gets sharper. I suggest you use one before critisising!   You do get true Super 35mm rendering of the lens with Speed Booster and that means all the characteristics of a larger sensor.   Instead of using a 25mm for example you can use a 35mm lens. Longer focal length = shallower depth of field.

  Hmm. Purple fringing at F1.2 on any lens is there. Even the Canon 50mm F1.2L. Same with the Nokton.   When you stop down on the Speed Booster chromatic aberrations and fringing disappear.

I had hesitated to try this for so long, but finally today a brave EOSHD reader sent me a tweet saying he had fitted his BMCC Speed Booster (with protruding rear-glass) on his GH4. It just goes straight on. First a BIG disclaimer. Speed Booster adapters have adjustable glass which can sit closer or further away from the sensor to fine tune infinity focus. On some adapters this will mean potentially it will clash against the inner housing of the mount and be damaged if used on a Micro Four Thirds stills camera. Therefore I do not take responsibility for any loss or damage if you try this. Read the full article here

  Would Fukushima have happened without one?

  Yes all correct.   But still no tsunami or magnitude 9 earthquake in central Germany. Odd.

  This is a great thread, has been wonderful to read and actually thank you to the original poster because it is well intentioned and interesting.   Thank you even more though to the people curious enough to do some proper research, because hysteria is everywhere today and it is not constructive. Most people don't have any real threats effecting them, so they invent them. This is human nature. One example is the complete decommissioning of nuclear in Germany due to a one-in-1000 year 5000 mile away tsunami which happened to one plant on the coast of Japan combined with a magnitude 9 earthquake.   Clearly nuclear is very dangerous in such circumstances. As it would be in your kitchen.   So the Germans decided to kill their perfectly safe nuclear industry and become dependant on expensive, ugly windmills and Russian nuclear power (a whole lot less safe) because of the threat of a magnitude 9 earthquake and tsunami!   Logical?!   About as logical as being scared of a 35mm F2 :)

A day at the beach is more dangerous than owning 100 Thorium coated lenses. We should be thankful the Thorium makes for a sharper picture. The only reason Thorium was replaced in manufacturing was due to hazards related to the actual manufacturing with large quantities of the stuff, day in day out. I don't intend to grind down the rear element of my Asahi Takumar and drink it in a cocktail.   So I guess I'll just keep using it.

Pretty good example. Any lighting other than natural sun light?

I can see Junior's case for dangerous ingestion of thorium coating if the lens is smashed and dust ingested somehow, but in the case of just using or living around the lens your skin acts as a shield... the radiation doesn't go past it and the doses aren't enough to cause skin cancer so I honestly don't think there's much to worry about. Obviously the manufacturers (Canon, and plenty of other biggies) would have done a full recall in subsequent years if evidence came up that the lenses were dangerous. They have been around for 30-40 years and there's never been anything proved!   I'll remain open minded and see where the argument goes. I did once sell my radioactive FD 35mm F2.0 with concave front element and got the non-radioactive version. Might be a good subject for the A7 book to add in the specs an annual dosage ;)

Very interesting thread.   And I am reading it very fast with my three eyes.

10 μSv is the dose everyone just got from background radiation in the last 24hrs.   So 1 hour of cuddling the rear element of your radioactive lens = 1 normal day living on earth.   Just after Fukushima I went to Japan.   People there over the entire year had a 1,052 μSv dose of radiation based on Tokyo's readings.   That is still only 2% of what the US allows workers to receive per year at work!   Source: http://www.blacksmithinstitute.org/blog/radiation-101-what-is-it-how-much-is-dangerous-and-how-does-fukushima-compare-to-chernobyl/   So say you spent 5 hours shooting with your radioactive lens per day, EVERY DAY of the year. That is still only 1825 Î¼Sv exposure and still under 5% of the total limit which is considered 'safe' by the US authorities.

I do cover some Leica M, Pen-F and Contax G short flange lenses in the book and some pancakes as well.

  What are you arguing for then?

  Only the lenses I own. I have one E-mount lens and it doesn't cover full frame! The new Sony FE mount stuff is not very interesting and it's pretty much a known quantity...I just feel it's overpriced but if you want AF (why? not useful for video!) then the 55mm F1.8 FE mount lens is the best.

The reasons to go for the A7S are 1.0x crop instead of 1.5x crop and having to use Speed Booster, otherwise 2.2x crop. And the low light performance.   Let's see what dynamic range is like on the A7S that might also be impressive.   There are very few other reason to get the A7S over the GH4.

Just a brief note: Panasonic have given me a ship date for the GH4 in Europe. First shipments leave the factory last week of April destined for Germany. Shipments to dealers start after the May 1st holidays so from the 5th the camera will be almost ready to ship to customers.Read the full article here

A comparison of standard bitrate / high bitrate from Lars  

Available now, special price of $19.99. Instant electronic download. Recommended lenses for the Sony A7 / A7R / A7S - A Reference Guide by Andrew Reid   Read the full article here

My advice is use Premiere and set the playback resolution to 1/4.

I see they listened to the pros at NAB.... "As expensive as possible please!"

Nice rumour. Promoted to front page. Happy Easter :)   Discussion continues here - '?do=embed' frameborder='0' data-embedContent>>

Here's a rumour of the latest GoPro specs. Source is not known to me so take it with a pinch of salt until it goes official! Read the full article here