Why don't you make your life a lot easier and simpler, since you are using stills (.TIFF) by using a 1080/25i sequence without the Maximum Bit Depth? Or are you using 10 bit TIFF's and a third party card?

Harm:  My original timeline is only moving images...R3s's, AVCHD and other material 90% 29.97 and a bit at 24fps....I should have preficed that i want my MASTER sequence as 29.97 since i have two markets that will get this...Europe and then USA. That said, if it is BETTER to make two Masters..great. But yes, i understand Tiff's are only images....and can then be put back any way....at least that is how i understand it....As for Maxium Bit Depth...Actually i have no idea what that is even used for---BUT, i do want highest quality possible for my master. So....why would i NOT use Max Bit Depth ? or Why turn off?

The whole Render to Tiff is new to me since i'm a throw over from FCP...and only rendered out prores for NGTV, Discovery etc....

Jim:  Ah...3x export---well, i had problems with some flickering because i used the effect Shadow/Highlight---which (see attached) caused flickering--took me 2-3 days to figure this out and little did i know it is a known issue with Adobe....but now that i'm rendering now for a 4th time as i write this....what i did was this...

when exporting out...i chose Tiff....you are right--i did not need to choose a frame-rate etc...but i did choose 1080p & 29.97, then send to Queue--then AME comes up and the actual coding shows as Tiff custom....so those settings i chose i'm sure do nothing then since each frame is merely a picture file.

So....now what i have done is render out the Tiffs....to a folder. I go back to PrPro...set a new sequence as 1080p & 29.97....import Tiffs as a sequence and then render again...now there is my sequence....

Ok...so now that i have my Tiffs...i guess i can do anything i wish....But, how would i get to 1080i 50i ?

These are the Tech Specs I am to meet:

1. Tapes

1x 60' HDCAM 1080i50 16:9 English/International version: fully texted with textless elements for opening titles, closing credits, subtitles and captions.

The tape must be seamless - without any commercial breaks.

Please refer to the attached technical document (page 11) for a detailed explanation of what we define as English and International versions.

2. Audio configurations

Channel 1: Full Mix Stereo Left

Channel 2: Full Mix Stereo Right

Channel 3: Mix minus Narration Left (undipped)

Channel 4: Mix minus Narration Right (undipped)

All audio channels must peak no higher than -10dBs (measured on the EBU digital scale) or 6 PPM (when measured on the UK PPM meter).

3. Please make sure all the titles are within 4:3 (preferable) or 14:9 (acceptable) title safe area.

For now i'm creating my Digital Master...once in hand I will take to a place to make my transfer to tape. Sorry to create confusion...my bottom line is getting them a 1080i 50 sequence. What i plan to do is this:  Make my master:

from there I want to make these:

1. domestic market:  1080p 29.97 digital master

2. foreign market:     1080i 50 digiatal master

3. then various h264's i'll put to my FTP for download as screeners

4...Both domestic and foreign markets all eventually me to deliver on HDCAM tape for their broacasters, but this is done by a transfer house when i supply them with the proper output file. I can output everything except 1080i 50....at least i don't see that option anywhere.