zlfan

Olympus should market this as one of the biggest features of em5, aside of ibis, yet it was buried for so long time, I just found it out.

I am trying to understand why motion jpeg codec is good on some old cameras. https://www.imaging-resource.com/PRODS/omd-em5/omd-em5VIDEO.HTM according to this article, em-5 720p 30p motion jpeg codec is 1/12 compression, 640x360 is 1/8 compression. for 720p 30p, uncompressed is 1280x720x30 about 30 MB/s, 1/12 compression is about 2.5 MB/s, about 2000 Mbps! for sd 30p, uncompressed is 640x360x30 about 10 MB/s, 1/8 compression is about 1.25 MB/s, about 1000 Mbps!

totally agree, it will balance my shg 35-100 f2, 14-35 f2, 7-14 f4 well.

personally, I think om1 probably is the Best Buy now, as om1 mk ii does not improve much, except that 200 frames buffer depth. I probably will couple om1 with my many mf lenses, in 1080p 10-bit all-i 60p 160 mbps mode. video quality seems fine to my eyes.

true. I am aiming em-1x once it reaches to around $500. maybe another 2 years. I have a set of shg and hg lenses. so I have to use em1 or om1 series for these 43 lenses, af, balancing.

good to know em-10 iii is better for video. can you explain more? if om 10 has an ibis of 6.5 stops, probably I will go for it, as it is much cheaper than om 1.

i think om-1 c4k 80 mbps 10 bit h.265 24p is usable and gradable, as long as you don't do slow panning or tilting or flowing the camera around. considering it has more details than other modes, it probably is the most prefer mode, even though the codec is very small. if there are many movements, which one is better? FHD 10 bit all-I 160 mbps 60p or C4K 10 bit long gop 150 mbps 60p or UHD 10 bit long gop 150 mbps 60p Maybe a tough question?

Another example, go pro 12 records at 120 mbps 10 bit 5.3k 60p h.265 (not sure if it is h.264). the results seem fine. there is room for color grading too. so, om-1's 150 mbps 10 bit 4k 60p h.265 may be good for general use.

By my personal experience, AF100A is 8 bit avchd 24 mbps 1080p 60p, C100 mk2 is 8 bit avchd 28 mbps 1080p 60p. Both are fine for movements if recording in 60p. To my understanding, AVCHD is a flavor of mp4, which typically is long GOP. 4K is 4 times of 1080p, theoretically, 8 bit 100 mbps 4k 60p H.264 is acceptable to record movements. Considering H.265 has better iq than H.264 at the same bit rate, 150 mbps 10 bit 4k 60p H.265 long gop is fine. Unfortunately, OM-1 C4k 60p is not as detailed as C4K 30p. OM-1 has a stacked sensor, so its 4K 60p should be fine for such a fast-reading sensor. Why the 4k 60p is not as good on OM-1? On the other hand, if it is a static shot, C4K up to 30p at 80 mbps H.265 10 bit may be fine.

Apple ProRes https://www.apple.com/final-cut-pro/docs/Apple_ProRes.pdf see the table on page 20. OM-1 FHD All-I 160 mbps is about the same as FHD Prores 422 LT 200 mbps. OM-1 C4K Long-GOP 150 mbps is even much lower than 4K ProRes 422 Proxy 400 mbps.

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.

why do people complain about om-1 video iq? seems totally fine to me.

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.

I read somewhere that motion jpeg has good image quality but slow rendering speed. so maybe your impression is true, not just nostalgic.

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.

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.

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.

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.

interesting, i did not know that gh3 can be unlimited in certain countries. good to know.

totally true. oly 1 series have some very interesting photo features.

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.

thanks for the info. will explore.

this is s5 iix plus a 55mm lens handheld. the stabilization is totally like on a tripod.

very nice. cinematic.

this spec is too much. you want me bankrupted. lol.