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Lets stop talking modern lenses and talk real lenses. http://www.ebay.co.uk/itm/CARL-ZEISS-Distagon-for-ROLLEI-HFT-35-1-4-35mm-F1-4-lens-/171312671882?pt=UK_Lenses_Filters_Lenses&hash=item27e307ec8a build up a complete set of these. 35, 50 and 85, remount with Leitax, and you have optics made in West Germany, of the same quality as those used on real Hollywood films in the 70's. With still phototgraphy capabilities yet to be bettered by modern lenses.

As much as I love the BMPCC, and I do, I can no longer ignore how much time and effort I work on shooting, copying and grading the footage. Video is secondary for me. So I bought a GM1 based on Andrew's insight and have to agree that when time is at a premium I can get more done with the GM1. I'm going to sell my BMPCC because I know I'll be tortured knowing it's here. If I was making films, there is NO WAY I would do this. The BMPCC is an extraordinary camera. It is truly a "cinema" camera. What surprised me about the GM1 is how small it is. It makes the BMPCC look big. That gave me a laugh. The physical dial is very delicate (con). The smartphone app is what I've always wanted (plus). The image is much better than the GF3. I wish I had the GX7, but I saw a GM1 body used, for cheap, so that's what I got. Still, the image from it is nothing sort of phenomenal. IMHO it blows the d600 video out of the water. I'm surprised they got a MFT sensor to do as well as it does in low light. So, tail between my legs, I go back to H.264 land. Thanks Andrew ;) Top Reasons I'm switching 1. Copy, grading is very time consuming. My hard-drives over-floweth. 2. As soon as I start shooting I worry about running out of card space, battery, etc. 3. The screen is not good enough to make me confident I have focus 4. If I run up against moire I may have to degrade the image to h.264 type quality 5. Davinci Resolve has been buggy lately. I question BM's support of camera. Took them days to respond to support request. 6. 3x crop factor is a killer because I like wide lenses 7. Center button brings up slate if not clicked double for focus zoom, annoying. Audio is not good. Little quibbles everyone writes about. Again, I love this camera. It's just too much for me. BTW, the "silent shutter" feature of the camera is something I would now struggle to give up if I changed my mind.

There's no such thing as a "perfectly safe nuclear industry". Try saying that to people living in a 5000 mile radius round Tchernobyl or Fukushima. There's not a single nuclear plant which has insurance, simply cos they can't find an insurance company willing to cover the risk. In Belgium, with it's "perfectly safe nuclear industry", 2 of the 3 plants have had to shutdown due to tiny microscopic cracks in the plant's core. Noone inside the perfectly safe nuclear industry knows how to solve it, or what to do with the core and the rest of the plant. The plants will very probably never startup again. Nuclear energy creates a wonderful legacy for our children and great granchildren : nuclear waste. Which will be here at least as long as we are. Plenty of it was dumped in the oceans, is leaking now and we have no idea what to do with the rest of the waste that's stored all over the planet right now. There's plenty of sustainable alternatives, the nuclear lobby is heavily subsidized (even after +40 years of development they can't function without heavy national and supranational funding). A recent EU report was censored because it mentioned how nuclear and fossil energy are subsidized more than sustainable forms of energy. I'd rather live nearby an ugly windmill than within 1000 miles of a nuclear plant.

now you can buy a Gold Plated G6 - as last !! join the club !

Hi! It's one of my first posts here but not the funniest I guess… I'm not especially talking about a magic C-lens in particular here but about a very underestimated question: radioactive lenses! One of my friends is a fireman captain and introduced me yesterday to one of his colleagues specialized in technological risks and chemical dangers (at Poissy, France : they're known to have very great equipments.) We made 3 different tests on all my Russian lenses which are all OK excepted the Mamiya Sekor 55mm f1.4 (M42). Here are the results: From 5 to 10 µSV per hour (by direct touch), and 1720 shocks per second. Element involved is Thorium 232. They told I really shouldn't keep it. Work with it more than one hour is dangerous. It must be gifted to specialized services and absolutely not be destroyed! Or thrashed! The most dangerous exposure isn't even radiations but dusts to inhalate or ingerate (when a lens gets old it disaggregates - it's something you can't always clearly see). I'm lucky cause until today I kept it in my basement. So, say it please to your friends and all potential Mamiya/Takumar users that you know via websites etc, it's a strong matter of health.

I had my GH4 with me Friday night at a concert and shot some semi low light footage. Most shots are C4K scaled to HD with a 2.35:1 crop. A few shots are FHD 60p slowed down. Shot in Cinelike D -5,-5,-5,-5. Graded with FilmConvert. You might see a few strobing lights due to dimmed LED's on stage. It showed up no matter what shutter speed I used. Overall I'm loving it.

I have a 550d and it is a great first dslr. Canon to me do have a good look with good colours. It has the advantage of phase detect focus for stills (as long as you only use the center focus point and use the focus and reframe technique). But I wouldn't describe it as a small and compact camera. It's compact in the sense that you can carry it round with one hand, but compared to the GM1 it is humongous. You will end up taking the GM1 out more because it is smaller. You may want to look at the EOS M. Its bigger than the GM1 but more compact than a dslr but with practically the same canon sensor. The 22mm lens is also really compact and sharp. Whatever you get make sure you shoot raw for stills. The video on the canons - while having a good overall look - wont be as detailed as the GM1 and may have more aliasing. Overall it will probably an idea to look at what kind of lenses you will want and look at the systems as a whole comparing size, weight, functionality and price.

My order status at BH changed today (April 28th) to " In stock, order sent to warehouse Pending..."

Petar, I have a 550d, If you compare the sensor performance on tests like DXO mark and at DPreview you should see that the GM1 outperforms the 550d as far as the sensor is concerned... However, the sensor size will also play a big role in your resulting image. Consider how your lenses will look on a 2x crop vs. 1.5x crop.

I'm using the first one. (The gold one.)

Rollei qbm is an easy remount - you can do it yourself. the leitax mounts are stainless steel and take 5 mins to fit. infinity with no problems

  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.

What I early said in this wild forum: But what I didin't explain too is that if let it fall and break it would be the worse situation, just have it near (getting old and disaggregating) is near the same, but slower. Once you get some inside of you it's forever. Really risky isn't it? So if I continue to argue here, it's because I'm afraid that a guy reading your last positive posts finds the wrong reassuring sentences he would be looking for and gets less carefully being less informated.

Hey, the GM1 works for a lot of stuff. I'm using effectively and I'm happy with it; shooting a lot of night city stuff without a light kit and it does the job... Ain't perfect, but no camera is, so you learn to work with what it offers. BTW, I've set my F1 button to control the ISO for quick exposure adjustment. Be sure to get in there and customize the thing to your liking. That does help.

Speak for yourself. Now I'm really worried.

I hightly recomend the SIGMA 30MM f1.4 it is insanely sharp , superb bokeh I use this lens alot , it is a fantastic work horse lens and cheap on ebay BTW Sigma make some stunning lenses do not be put off , I have alot of Sigmas and they are just as good as Canon no issues there

The viewfinder info is just a part of the article, as an example. It's not the only subject of this, so it's not "an entirely different topic". It's full of infos about Takumar. So read full text before answering "Mr Saadwi the physician"…

Come on man. You seriously think I was being serious when I joke about the skills involved in fire safety?

Check this: http://petapixel.com/2012/10/11/a-look-at-the-radioactivity-of-old-manual-lenses/ It says: "If you want to learn more about the health effects of this radiation, check out this article by the Health Physics Society. Based on that data, Matthew Miller writes" [...] Or to put it another way, in that year. Not completely trivial, but not something people normally stress about. And . This puts the “6hrs/day for a month†usage at about the same as getting a chest X-rayusing the lens six hours a day for a year would be the same as taking three round-trip flights from one US coast to the otherthat’d be really heavy usageThe articles indicate that , particularly if you happen to have thorium in an eyepiece [...] So you might decide to spend a little less time holding the camera right to your eye than you might otherwise. exposure to the eye might be a greater concern than overall dosageAssuming (based on the reading) that looking through the viewfinder is very roughly an order of magnitude greater exposure than the general usage, . looking through the viewfinder for an hour is about 1µSv — equivalent to getting an arm x-ray

On a serious note. Iscorama's, iscorama 36, 43's centavisions and 54's made between 1960-1989 are rated at the highest radioactivity of all lenses ever produced. Dangerous levels thought to lead to impotence in men. According to a bloke at my local fire station he is recommending owners send all iscorama lenses manufactured between these dates to the Dog Schidt Optiks radioactivity decommissioning outpost where they will be carefully disposed of.

Andrew, our body receives a natural telluric daily dose of 0,5 μSv per day. If you add to this natural one, the industrial, medical, cosmical etc it makes approximately 2,4 mSv/year (people get unequally 1,5 to 6,0 mSv/year in France - official numbers! Check it: http://www2.cndp.fr/themadoc/radioactivite/radioactiviteimp.htm ). What the specialised guys told me yesterday is that even if it doesn't stay around your neck or on your chest for hours, (or under your bed), it's still dangerous because of lost dusts. One of the main risks is to let it fall and break it for example. Vacuum cleaner wouldn't help you there… Once ingerated (accidentally of course), Radium 226 is known to stay on bones and in liver for life! Maybe you think that if all this was true it would be a more widely reported issue? I agree, but you need to know that the famous firemen department where I was yesterday has just added my Mamiya in their "hot" database. Think about it. I've sent them some other links cause they asked me for. I don't know why it's not much more a reported issue… but it should be! I had enough of contradictory forums that's why I took a train to get personnaly a real specialist. We made 3 different test and they were all very bad (results are in my top post). Takumar f1.4 is known to be worse than Mamiya, so what I say comes from pros, not from this rich but unreliable world wide web. Anyway, each one is free. If it can help, my clean checked "vintage russian lenses" are: - Helios 44m; - Tair 11A; - Jupiter 9 ; - Mir 24M. My Sankor 16D is clean too. (And modern lenses aren't concerned.) Take care of 70's russian lenses.

Pilots and hostess have cancer increase. Radiologists are really protected and supervised). You Andy take plane maybe 5 times a year and go to the dentist (for x-rays) maybe once a couple of years, for 30 seconds. You can't compare! Aluminium won't help, just concrete or lead. Radioactive lenses is a very UNDERESTIMATED problem, espescially on photo forums. I know what told the geiger and the officers. I think we talk about health here, not bokeh.

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http://camerapedia.wikia.com/wiki/Radioactive_lenses

Finally, a GH4 vid that doesn't look like 480 mush. Absolutely beautiful.

I haven't followed the topic, but I was curious if I could simulate the theory. On Fred Miranda I found this topic that explains how Photoshop saves jpgs in 4:2:0 or 4:4:4 I used a full resolution JPG from the GH2 and took the following steps: Cropped the image to 3840x2160 and saved as JPG quality 6. The result is a 4K 4:2:0 still. Then I resized this image to 1920x1080 and saved it as quality 10 to make a 4:4:4 image. I also resized the 4K 4:2:0 still to 1920x1080 and saved it at quality 6 to make a 1080p 4:2:0 image. 200% crops of the above images in same order: 4K 4:2:0 1080p 4:4:4 1080p 4:2:0 Not sure if this test is correct, but to me it looks like you can gain color resolution from downsampling the 4K 4:2:0 file to 1080p. Correct me if I'm wrong!