zlfan
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Everything posted by zlfan
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Thanks for the detailed list. I did not expect that C4K 30p on OM-1 is 10 bit 80 mbps H.265. This kind of bit rate is really low considering the recording format is 4k. In comparison, 4K Prores 422 HQ bit rate is 880 mbps up to 30p. It is about 10 times difference. Really difficult to keep all the details if there are movements. I was wondering why you used FHD 60p. Now I understand that this probably is the best mode on om-1. although it may have a little bit loss of details due to the imperfect oversampling process, but the codec is much stronger, especially for all-i 60p at 160 mbps H.265. In comparison, 1080p Prores HQ 422 60p is about 440 mbps. basically, the movements do not have much effects on the footage in this mode.
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why do people complain about om-1 video iq? seems totally fine to me.
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OM-1 image quality is good, detailed. I think its iq should be comparable to gh6/gh7. Functionality is another topic. This is FHD. I guess that DCI 4K 237 mbps is even better on OM-1? ibis is tripod like most of the time. at extreme tele, probably 100 mm, there is minor shaking showing that it is hand held. but generally speaking, shaking is not eye catching at all. color is fine, natural realistic look. thanks a lot for sharing.
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I read somewhere that motion jpeg has good image quality but slow rendering speed. so maybe your impression is true, not just nostalgic.
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motion jpeg codec is compression within the frame, like I-frame, all-i, etc, not like long gop that compresses among similar frames. the former has higher bit rates and larger files, but better quality, especially at higher bit rates, especially for movements.
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horses for courses. shallow dof is actually very beautiful, suitable for cinema. big features have designers, so the background typically is very nice. to blur those backgrounds, it is kind of wasting. if you look at the "in time" by roger deakins, actually most of the backgrounds are blurred, even though they were well designed and looked beautiful. deep dof is mostly good for news to increase more background layers and information. now, a lot of news pieces look like cinema, with shallow dof everywhere. lol.
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i have been waiting an om camera body since em5 that i can use my many manual focused vintage lenses, as om has the best ibis. i waited 10 years, i guess that i need to wait for another 5 years for om to come to a really video friendly body. what a pity. at that time, maybe other companies' ibis is good enough.
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actually, i have a feeling that gh2's 1080p is oversampled from the 5k-6k sensor, that it is so good, it still holds until now. the body like evf, lcd, other functions, etc, may not be as good as the latest. but iq alone, seems to me it is not far behind the current gh cameras. just my feeling when watching on youtube.
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interesting, i did not know that gh3 can be unlimited in certain countries. good to know.
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totally true. oly 1 series have some very interesting photo features.
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thank you very much for the detailed hands on experience sharing. i have a feeling that om1 mk iii will have a drastically improved video. as other japanese companies go internal raw, olympus 1 series has to catch up and do something. om1 ibis already almost reaches plateau, om1 mk3 has little to improve here, but has a lot to do on video.
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thanks for the info. will explore.
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this is s5 iix plus a 55mm lens handheld. the stabilization is totally like on a tripod.
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very nice. cinematic.
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this spec is too much. you want me bankrupted. lol.
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even e-m1x 4k video seems very good.
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gh2 can do unlimited video recording due to the hack. it was a big thing at the time. gh3 although has a little bit better 1080p than hacked gh2 1080p (actually very little), but limited to 30 min. gh5 is a refinement of gh4, worthy of mentioning. gh7 is really mature. I think hacked gh2 still is the most famous, iconic one. hack is the key here.
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maybe arriraw is not as efficient as r3d, like rendering speed, nle support? Alexa already has prores4444, pretty good actually.
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thanks for the info. I don't know this. what are the compression ratios on these cameras?
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broadcast industry is a double edge for alexa. uncontrolled lighting requires high dr, which is the forte of the alexa. but broadcast industry on the other hand produces one time piece. nobody watches news over and over again. for news reporting, hcb's idea of decisive moment is the key. even if a phone catches a critical scene, can make a huge viral news globally. alexas, on the other hand, are too expensive, too big, not essential for news. maybe for arena type shooting like rodeo events, alexa is suitable. but even in this case, 2/3 box lenses with 2/3 cameras have distinct advantage over alexa. i think in the broadcase industry, 2/3 cameras still rule, especially when coupled with box lenses, for non moving jobs. for quick turn around jobs, 2/3 cams with all auto superzoom lenses have the best ergonomics. i have a varicam 27h (another 27h and panavision f900 for parts), so i know that 2/3 cams have the best ergonomics than anything else in the world for shoulder mount quick turn around. in summary, alexa has a not so bright future.
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the gap between something like z6 iii vs alexa family is getting narrower and narrower. at certain point, alexa will be truly niche product like leica s system.
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codec means compression decompression. anything is compressed is codec, no matter compressed raw. only ml raw can have true lossless codec due to the lj92 engine found in ml cameras.
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probably I will stick to my epic-x mysterium-x. with rail based battery, I have a contacting point against my chest. I have the grip for the right hand, and left hand hold the bottom. I use smallhd dp6 lcd for viewing. I use Leica r 19mm f2.8. looks stable enough. 5k 60p 5:1. good enough to compare to these new mirrorless. I probably will think to have s5 3 for its ibis.
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stabilization seems not good enough, comparing to s5 2x.