"It almost looks like it's the shirt ... stay with your original decision."
Smith was surprised and none too pleased with the adjudication.
The 26-year-old marched over to Ravi to seek clarification, gesturing with his fingers.
David Warner also joined Smith in discussing the issue with Ravi.
"There was a little mark there but it's done now. There's no point talking about it now," Mitchell Starc said, having sent down the delivery in question.
"I was asking Smithy not to take it."
Former Australia skipper Mark Taylor couldn't understand the consternation, saying there wasn't enough evidence to overturn the decision.
"I don't think the one (spike) earlier on is anywhere near big enough ... it's definitely not out," Taylor said on the Nine Network.
"I'd want to see more of a scratch than that."
DRS has provided plenty of intrigue in the ongoing three-Test series.
On day one of the ongoing clash in Perth, Brendon McCullum was in disbelief when an lbw review went against his side
The DRS tracking system showed the ball would have cannoned into the bails at the top of middle stump.
But with a touch under 50 per cent of the ball predicted to hit the wickets, the verdict was umpire's call.
NZ's skipper McCullum shook his head, while injured allrounder Jimmy Neesham took to social media with similar thoughts.
"You're kidding. That has to be so, so close to 50 per cent of the ball," Neesham tweeted.
"So unlucky."
- AAP
