Check settings combinations to achieve good Optical Flow HDV 50i -ProRes422

Hi Guys
RE: Motion 3, HDV 50i, standard ProRes 422, optical flow
I'm trying to decide which combination of settings I should choose in order to ensure the highest possible standard of optical flow-treated video for a video clip which just features live people - no graphics.
So far my results haven't been as 'smooth' as I would have liked. Below I have detailed my steps taken - if you could recommend which combination of 'lighting', 'field rendering', 'motion blur' or 'frame blending' I should choose I'd appreciate it.
1. I captured my Canon XHA1 HDV 50i video via HDV - standard Prores 422
2. I edited in FCP6 with standard Prores 422
3. I sent a video clip to Motion 3, new project and chose Broadcast HD 1920 x 1080 25 fps field order Top (Upper First)
4. I treated the video clip with optical flow to slow it down.
5. Export as standard Apple ProRes 422 movie.
Prior to exporting which of 'lighting', 'field rendering', 'motion blur' or 'frame blending' would anyone recommend please?
For reference, in this forum David Bogie kindly stated the difference between the choices. I have included his post below. However I just want to be sure I'm making the correct choices, as I'm a bit confused about the '50i' (interlaced) aspect of my video footage.
Here is David's post:
"lighting
field rendering
motion blur
frame blending"
These are options you need to use when you know why you want to use them.
If you have lights on in your scene, you want to render them. If you have no lights (and no camera) you do not need to activate lights. why does the switch exist at all? I render without lights for preview purposes.
Fields are necessary for interlaced formats. You must know if your production format is progressive or interlaced.
Motion blur enhances the illusion of movement by simulating image smear caused by an open shutter. You get the illusion at the expense of rendering time.
Frame blending is only necessary if you have video clips in your scene and even then you don't need it unless you've changed the speed of the clip. Sort of. "
Zak Peric also kindly posted, although I think his post relates more to graphics as opposed to interlaced video footage. Nonethless, here is his post:
"Just use animation codec + alpha if you have alpha channel if not use animation codec millions of colours. This is the best codec for best quality. Also 4444 is a very good codec to use as it supports alpha channel but gives you smaller file sizes. Use always BEST from the render window, if you want additional motion blur then switch it on in render view. Be advised it takes much longer to render with motion blur on."
Any tips would be really appreciated.
Warm regards
Peter

Hi Mark
Thanks for your kind prompt feedback.
"You say you sent a clip to Motion, but then you say you chose project settings - I don't understand this. If you really "sent' a clip to Motion using Final Cut Pro's "Send to Motion" command, you don't need to set project settings - Motion automatically creates a project with settings that match the FCP sequence. "
Okay I understand - sorry for any confusion caused - I had already used "Send to Motion" and applied Optical Flow to a clip which I then exported from Motion 3 as a Quicktime file. I was planning to repeat this process afresh, but am interested in which settings you could recommend from 'field rendering', 'motion blur' etc that might be applicable to my Optical Flow-analysed footage prior to exporting it as a Quicktime file.
As regards exporting my Motion work as a separate Quicktime file, I prefer to do this so as to avoid the waiting for it to render in FCP.
The already-optical-flow-analysed footage is actually pretty good (the original clips from FCP6 have already been stripped down to short durations to suit Optical Flow), but want to to double-check which of the 'field rendering', 'motion blur' etc combinations I should ideally choose to obtain best results, just in case I'm neglecting something that could otherwise make the quality even better?
Once I finish this video project I'm on I'll definitely be going for a clean install of SL and FCS3.
So, based on these choices...
lighting
field rendering
motion blur
frame blending
...I'm thinking that for my optical flow-treated video I won't need lighting, as it's mostly applicable to graphics.
I don't have any graphics in these optical-flow video clips. It's just moving video footage of people.
Am not sure about whether to choose Field Rendering (interlaced PAL 50i HDV - ProRes422 video).
Am not sure whether to choose Motion Blur.
Am not sure whether to choose Frame Blending.
Any tips would be really appreciated, and thanks again for your valuable feedback.
Peter

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