Andrew - EOSHD

Referring to the video. It has more holes in it than a block of swiss cheese.   He says a large sensor captures more light, without mentioning the crucial SIZE and NUMBER of pixels. It is the size of the pixels and how many there are that gives you your resolution and dynamic range. The Blackmagic Production Camera for instance has a larger sensor than the GH4 but sucks in low light because it has small photosites due to global shutter circuitry around each pixel taking up a lot of room. He has grossly oversimplified things in that video through lack of basic knowledge.   He is multiplying aperture by crop factor to give an equivalent depth of field, this too is bollocks.   F1.2 is F1.2. At the same focus distance and focal length you will get the same shallow DOF with a 50mm F1.2 on a small sensor as you would do on full frame. The difference is that to maintain the same framing, the small sensor camera has to move back from the subject, and the focus point shifts backwards towards infinity, which lessens the separation between the subject and background making it appear that the lens is giving a less shallow DOF.   He also really stupidly in his Canikon love affair doesn't seem to mention that F1.2 is as bright as F1.2 no matter what the sensor size is.   F1.4 does not = F2.8 with a 2x crop sensor in terms of exposure or light transmission.

It's total bollocks.

Cinema5D had a famous anamorphic thread which ticked along very nicely for 2 years until it died. I'm a big fan of sticky things :)

This is my favourite of the small, compact LED panels with good battery life. I like it mainly for the variable colour temperature control.   http://www.eoshd.com/content/9867/switronix-torchled-bolt-variable-temperature-led-light-review   If you just want a harsh but bright white light and are shooting raw, so can heavily colour correct the white balance in post then this is a good deal for cheap! 

If this thread takes off then I'll make it into a sub-forum. Having it as a sticky thread is a good way to get the flow of conversation started as sub-forums are more 'hidden away'.

  I've been trying James Miller's settings around that and it does indeed work wonders for the blacks. Very smooth.

The official topic for discussion of Magic Lantern raw video recording on Canon DSLRs.

The official EOSHD forum for discussion of lights, lighting, both creative techniques and the hardware!

The official EOSHD thread for discussion of grading and colour correction. Techniques, software, codecs, etc.

The official EOSHD discussion thread for all things lens related!

  Who said anything about street videography? If your cast is in the zone and ready to go, but the camera man is fiddling with his live view and mirror flipping up and down, it's a pain...

This thread is in the wrong place.   http://www.eoshd.com/comments/forum/21-creativity-and-ideas/

What's the point of slightly better image quality if you miss a shot entirely due to having to quit movie mode simply to set the required aperture?

  The only time the blown-out hair happens is on the slow-mo footage, not the 4K. And it was a challenging shot because of extremely bright direct sunlight on Susanna's hair. She was backlit by it and I was exposed for her face. An Alexa would have struggled with that.   I didn't grade for maximum dynamic range and one of the 4K shots was a bit hot, a bit over exposed.   I am fine with the dynamic range from the 4K files so far. Seems similar to what I am able to get with 5D Mark III raw. The GH4's sensor is rated for nearly 12 stops, same as the 5D Mark III's sensor. Packing that into a JPEG, which is effectively what the 4K video is but more compressed, well... you be the judge. Possible or not? Think about stills. I'd say yes it is possible.

  It ends up being a 0.9x crop with BMCC Speed Booster if you compare it to the typical Super 35mm sensor size. I.e. it goes larger than Super 35mm, but still a 1.4x crop over photographic full frame.

  Try this app -   http://www.eoshd.com/content/12594/exclusive-first-app-resample-panasonic-gh4-4k-8bit-10bit-444

  The Mk II raw with anti-aliasing filter installed is very interesting. It doesn't quite have the ultra-clean feel of the 5D3 so feels more analogue. I am working on an updated Shooter's Guide for both the 5D3 and 5D2, plus have shot a ton of stuff which isn't yet published! There will be many more articles in the coming weeks on this and quite a few surprises :)

My full review of the Panasonic GH4 (final retail unit) is coming next week. Until then I am enjoying Philip Bloom's views on the camera here! A big thanks to B&H Photo & Video in the US for shipping internationally a GH4 unit with no recording limits, I got it before it was even available in Europe. Delivery took just 2 days! Impressed! Read the full article here

The potentially fixes one of the biggest problems with the RX10 (AVCHD codec break-up) and puts it into a tiny form factor. Could be really nice. I was a big fan of the previous RX100s.   The pop-up EVF is cool too.

Looks like they took some bad advice somewhere along the line on price, but I still can't wait to get my hands on a 4K full frame image.

Not a pleasing price but I think it is unique enough for me to still want it, for low light, full frame, to sell my A7R and replace it with this just to get rid of AVCHD is worth the extra! 4K in future to Shogun a pretty big bonus in my view.   GH4 still the one to get overall in the here and now... it is simply better featured for video.

  Nice shots in there and like the concise writing style. I liked it enough to get that generic EF speed booster for my GH4. The results look pretty good judging from Vimeo. £70 can't go wrong! Or can i!? Time to find out.

Happy to have two threads actually...   One for problems.   And one for design aspects.   Slow-mo softness at 96fps and 2.2x crop in 4K is an aspect of the design.   A problem for me would be a bug or usability quirk.   Let's continue on the thread but be clear on what we mean...

Complete an utter madness. The 4K mode does not come at 'too many other costs'. If you're shooting 1080p internally you're completely wasting the talents of the camera. I am shooting 4K on the GH4 for 1080p delivery. You can reframe in post, which is endlessly creative, no matter what you're shooting. The image quality for 1080p looks WAY better downscaled in post from 4K to 1080p than pixel binned on the sensor in 1080p mode.

Pietz I pointed all this out months ago in my articles, I resent being called a fanboy. Change of tone required I think!