However, I will make an example:
Let's say I have five sequences of pictures. I wanna show these sequences one by one, at different positions and different time.
Not a problem with Wings
I assign a track to a field and then put the first sequence of pics into the track. OK.
The field is pos in the upper left corner (field parameter). When the sequence is over I have four seqs left to show.
Seq number 2 is to be shown in the opposite lower right corner. I put seq number 2 into the same track as number 1.
Instead of moving every pic in seq number 2 one by one, I want to move the whole field to the lower right corner. How?
If I do it in field parameter, it will effect the whole track, even the seq 1 position. I don't want that.
Do I have to create a new field and pos it in the lower right corner?
Creating a new field and pos it in the lower corner will be the easiest and fastest method.
Put seq 2 pictures into a new track, and assign this new field to that track. On the timeline, you can position, time-wise, the seq of pictures to occur after seq 1.
I.e, do I need to create a field for every new position of sequence, or can I move the field pos from the upper left corner to the lower right? If so, how?
You can do either, but each can have a different visual effect depending on opacity of picture object during the change in field position.
Creating a field for every new pos of sequence is like a jump cut from previous position to new position (or fade in/out if you use the ramp band). Best to use 2 tracks for this. One track assigned to a field pos for seq 1, and a 2nd track assigned to a field pos for seq 2.
An advantage to creating a field for every position is that it allows you to re-use the field for other sequences.
Moving the field pos from upper left corner to lower right requires key-framing of the picture object/field. If the last pic from seq 1 is visible, you and audience will see the pic object move diagonally to its new position. If no object is visible (i.e. ramp band = 0), field pos will move, but audience will not see its movement.
To create 5 new fields and tracks is ok, if I only have 5 sequences of pictures to show. But if I want to create a 10 minutes show, with 20 sequences and 500 single pics at many different pos and sizes, as a collage, it is impossible to create a field for every new position. I must be able to use and reposition the same track and field over time. No? Otherwise I must create 100 tracks and fields, and that is not effective, since I'm only using 4 or 5 at the same time.
From my knowledge of Wings, that is the easiest way.
If you use the in-screen editing and move the object-and-field, you would have to copy and paste the key-frames so created to another object for it to acquire the same properties of position and size.
On the other hand, creating multiple fields in Media Pool is relatively quick and allows you to re-use the field's properties anytime.
Procedure is Screens > Screen 1 > hover mouse over a Field you want to copy, right-click to Add a New Field and a new field is created with the same properties. If you right-click to add a new field on a blank part of the window, the new field takes on the Standard properties which is the full screen field.
In the Screen 1 Preview window, right-click to enable 'Display screen field frames' and you will be able to see the actual position of the field(s) in a yellow outline, unless they are hiding behind each other and are of the same size.
Edit the columns for Zoom, X and Y positions to preset their respective sizes and positions. Ctrl-C and Ctrl-V are your friends here. Rename each field for identification purposes.
Once your 100+ positions are created, insert 100+ tracks to your timeline with just a couple of mouse clicks (use "insert tracks..." and specify the number).
Then run through each track head's property and pre-assign a field to each track.
After this prep exercise, just drag and drop your picture objects into the track with the field you want. Thereafter, you can still key-frame changes or movements (animation) of field and object.