St Kilda coach Ross Lyon has revealed discussions among football authorities in relation to fixed cameras behind the goals 'fell over' on the eve of this season.

As the Saints prepare to defend tough man Steven Baker at the AFL tribunal on Tuesday night, Lyon told the media at Moorabbin that down-the-field cameras were talked about by league heavyweights.

Baker was reported on Monday night after an AFL investigation, despite no footage of the incident that left Fremantle forward Jeff Farmer concussed and nursing a broken nose.

"There was discussions, but it's hard to get 16 clubs in agreement to be fair to everyone involved. It's something going forward (St Kilda would like to see)," Lyon said.

"Channel 7 and Channel 10 were fantastic but the negotiations took a fair while and there was no congruency between the clubs."

"It's something the coaches' association is working closely with the ground operations and the television stations for next year."

St Kilda heavyweights - including football operations manager Ken Sheldon - will vigorously contest Baker's charge at the tribunal.

Lyon refused to discuss the particulars of the Baker incident.

"We're fully supportive of Steven Baker and we'll give him all the support he needs to front the tribunal tonight," Lyon said.

"As a coach it really is an important game this week and that's where my full focus is."

A groggy Farmer was forced from the field with blood flowing from his nose during the third term of Saturday's Telstra Dome clash with the Saints.

The incident occurred well off the ball, with Baker the only other player in the vicinity.

The charge was laid following an investigation by AFL investigations officer Graeme McDonald.

Lyon, who said he was satisfied with the process, did not have an issue with a Fremantle trainer giving evidence at Tuesday's hearing.

"I can't control the individual. Clearly there's an investigation and those things are in place and rightly so that the investigation for any off-the-ball incidents is in place," Lyon said.

"I've got no problem with anything."