zlfan

5.2k 1x3 is about 3k 1x1 to my eyes.

for 700d/650d/eosm/100d, 5.2k 1x3 2.40:1 24p is about 3.75 MB/frame x 24 frame/s x 1.4 x 0.7 = 90 MB/s, with the lexar silver card, this mode may be continuous. this is s35 full frame for these crop mood cameras, the live view is high res color mode even in crop modes, practically very useful.

another useful mode on 5d3ml is 3.5k 1x1 mode, it can do 16:9, most importantly, it is s35 so that many cinema lenses are adaptable to this mode. 7MBx24x1.4x0.7 ia sbout 170 MB/s, so if do 10 bit, 3.5k 1x1 16:9 is continuous, maybe 12 bit will work.

dual iso is possible in this uhd 1x1 mode on 5d3 ml, can increase 2-3 stops, at the expense of possible moire and alias in the highlight area. i watched uhd 1x1 dual iso travel footage, i did not see the moire and alias,, or they were not eye catching. the practical problem is the striped monitoring when using dual iso.

5d3 ml in 1x1 uhd mode can only have 2:40:1 and larger aspect ratio, so each frame is 6 MB, so 6 x 24 x 0.7 = 100 MB/s. for 12 bit, 6x24x0.7x1.2= 120 MB/s, for 14 bit, 6x24x0.7x1.4=140 MB/s. so UHD 1x1 24p 2.40:1 14 bit lj92 lossless may be continuous if using fast cards, card spanning, sd card overclocking. so 5d3ml is still relevant. and it is 4k 14 bit, crop ratio 1.3 to 1.4 in uhd 1x1 mode.

with global draw off, 5d3 ml can do uhd 2.40:1 24p 10 bit color depth lj92 lossless ml raw continuously, 8 MB / frame x 24 frames / s x 0.7 (lj92 lossless compression least compression coefficiency) = 140 MB/s < 145 MB/s. maybe 12 bit too in some cases.

some cards like lexar silver can do 100 MB/s, stably at 80 MB/s, this is better than cf card. this makes 650d/700/deosm/100d better than r1mx in terms of data stream writing speed. 5d3 ml has 145 mMB/s, about the same as epic-x, maybe a little less, not much. so 14 bit color depth is more possible with many modes. also, 200d may have a 15-bit mode, the highest in all video camera, including alexa.

i still remember that viral video clip taken by gh1 bragging that it can match red one. i personally went the canon and later ml road. i bought 2 brand new g3, hacked one, but sent as gifts. i liked em5's color and ibis.

" Doug JensenApril 27th, 2011 04:55 AM Re: Upcoming hands-on comparison of F3, FS100 and AF100 from Philip Bloom Having used a pre-production FS100 myself, I can agree with most of Phil's impressions of the camera. However, he says " . . . HDMI and it is only 8 bit 422 . . ." I have no way of testing it myself, but I'm pretty sure that is incorrect. I have been told personally by Juan Martinez at Sony USA that the HDMI output is 8-bit 4:4:4. And if you don't have a recorder that can handle 4:4:4, then the camera will automatically send 4:2:2. At least that is what I have been told by the man who should know." FS100 can do hdmi out 8 bit 4:4:4. I have not tried myself yet. I only use hdmi for a monitor.

are they outdated? which one do you prefer? pros and cons

varicam 27h has 60p, 3 ccd thus global shutter no debayering, dps from 2000-2010 like its footage and see it as a substitute of 35mm film rolls. maybe ccd performs better even with a relative fast reading sensor?

when i pan with c300 og, the 50mbps mpeg codec makes the whole scene blur. i cannot see anything clearly. once the panning stops, suddenly the image is very clear. i just hate it. i use nanoflash's top codec 280 mbps mpeg and 30p and it is cured. when using ml raw cameras, i see clear images during slow panning (fast panning shows rolling shutter) at 24p. i almost always use 24p for ml raw cams to save bandwidth.

probably 50d has a really slow reading sensor. i know fs100 can do 60p easily so the sensor may be faster.

i think that andrew has a very good insight. maybe the r1mx, the eosm, gh1, do not have a fast reading sensor, so that more optimized (actually limited by the then technology) for 24p motion blur.

interesting, i like the r1mx and eos-m crop mood too. i did not use gh1 hacked before. may try it.

"I think some of the faster sensor readouts are losing something important. They all look like 60p in their 24p modes." probably this is why people complain about the clinical images of the latest crop of cinema cameras, the high res, plus the lack of motion blurs. probably it is better to have 24p mode only in a camera. nowadays, high frame rate modes and 24p mode are in the same camera, not good for 24p optimization. f35 has only 24p, its 60p is rarely used. probably this is why f35 is so good at motion cadence other than its global shutter.

"The best motion cadence I've ever shot was on the Digital Bolex with the CCD sensor." i wish i have a digital bolex.

alexa has no global shutter, yet has better motion cadence, say, than f35, or komodo? what is motion cadence, then? probably my om-1 in 6k 120p burst mode has better motion cadence than alexa in slow mo mode, as om-1 treats each frame as a single photo?

nikon photo cameras have that kind of extremely sharp glow, i used v1 10 mp for its 60p mode, coupling with nikon's 18mm f1.8 (?, kind of forgetting the lens spec, long time ago), the video clips on my computer screen are very sharp and has some kind of glow (lost on youtube). now with om1 20mp 120p and zeiss zf 21mm f2.8, i still don't see that kind of sharpness glow. each camera manufacturer has its own secret juice.

This is my point. If a 20 year old varicam 27h can can do a lot that 35mm film rolls can do, the modern crop of mirrorless and cinema cams are much better, the gap between these new ones and the 35mm film rolls is really not that much, hard to justify the 100x cost and the much long time for processing.

seems that baby's chin area, the local dr is really high, yet the highlight rolloff seems nice by my eyes. the details in the highlight area still are kept. there is no clear dead white, no clipping on the right side of the histogram. if this holds true, it is really hard to justify using alexa 35, or even 35mm film rolls. they may be even better in this situation, but 27h is good enough.

i think that baby's face is one of the challengest situations, dark shade, interwoven with the sunshine areas. this demonstrates that the 27h has some mojos. my point is that the film rolls may have similar situation like the closing shop arri, 5% improvement vs 10-20 times cost. for the film rolls, the cost may be 100 times more, depending on the final feature's length.

the highlight rolloff and the skin tones of that baby's face are really nice. the low res look may be due to the superzoom. "I used Angenieux zoom B4 lens, but I'm really interested to trying Zeiss Digiprime, cine lens for 2/3"." my experience on even the canon b4 cinema zoom is not so good. no hands on experience on digiprime. i guess the digiprime will be leading a big margin in terms of clearness.

varicam 27 is 3 2/3 inch ccd cam. so the color is good. not sure about the highlight rolloff. i bought mine 10 years ago, used it once or twice, as i am totally unfamiliar with this format and the learning curve is stiff. those two menus are very difficult to go through. and all those terms in the menus are strange words to me. i am still learning. i can verify the color is good. the resolution and the details are not as good as other high quality 1080p or 4k cams that i have, but because i put an old tv zooms in front of my copy of 27h. if i put some digiprime lens on my unit, and if i learn well to set up my own picture profile confidently, i think the resolution and the details should be acceptable. not sure about the highlight rolloff though. i don't have hands on experience with the alexas and the 35mm film rolls. so i don't know the best highlight rolloff. in normal conditions, seems 27h gives good images.