52 In addition to these principles, I have had regard to the further restraint upon interference "given the strong resistance that exists against appellate 'tinkering' with sentences" identified in Dinsdale v The Queen (2000) 202 CLR 321 at par [62]. This modern reaffirmation of the special importance of the sentencing tribunal is undoubtedly traceable to a number of sources. They presumably include what was said by Sir Frederick Jordan in R v Geddes (1936) 36 SR (NSW) 554 at 556 as follows: -
". . . I think that a Court of Criminal Appeal should intervene if the sentence appears to it to be out of reasonable proportion to the circumstances of the crime, having regard to the facts proved in evidence at the trial, but before the Court is satisfied that such an absence of due proportion exists, it should make the fullest allowance for the consideration that the trial judge has had an advantage denied to it, namely, that he has seen the witnesses, and, therefore, that he has had an opportunity of forming impressions which no perusal of cold print can afford. Unless some error in principle, or some such unreasonable disproportion, appears, I think that a case is not made out for revision of the sentence."
53 Earlier in the same case his Honour made the following comments: -
"The function of the criminal law being the protection of the community from crime, the judge should impose such punishment as, having regard to all the proved circumstances of the particular case, seems at the same time, to accord with the general moral sense of the community in relation to such a crime committed in such circumstances, and to be likely to be a sufficient deterrent both to the prisoner and to others. When the facts are such as to incline the judge to leniency, the prisoner's record may be a strong factor in inducing him to act, or not to act, upon this inclination. Considerations as broad as these are, however, of little or no value in any given case. It is obviously a class of problem in solving which it is easier to see when a wrong principle has been applied than to lay down rules for solving particular cases, and in which the only golden rule is that there is no golden rule."
54 As I have said on other occasions, uncontroversially, the question of what is, and what is not, a proper sentence in any particular case is a matter upon which minds will invariably differ. For example, in R v Burns [2007] NSWCCA 228, I expressed the following opinion at par [36]: -
"[36] There is often a fine line between those cases in which a sentencing judge can be shown to have failed properly to exercise a discretion reposed in her or him, having regard to the relevant legislative constraints and current judicial guidance, on the one hand, and those cases in which the discretion has patently been exercised in a way that balances and accommodates all the manifold competing circumstances and influences, on the other hand. Views on sentencing outcomes will almost always vary, depending significantly, although not exclusively, upon the perspective of the commentator. There seems little doubt that some appropriate sentence of full-time imprisonment imposed upon the present respondent could have withstood appellate scrutiny. However, for the purposes of this Court, that is not to the point. In my opinion the sentences imposed upon the respondent by his Honour were wholly appropriate. That is also not to the point. The issue is whether or not his Honour's sentencing discretion was relevantly infected by error in such a way that it resulted in the imposition of sentences that are manifestly inadequate. In my opinion, no relevant error has been demonstrated and the sentences imposed upon the respondent are not manifestly inadequate."
55 In the present case, there is no distinct - or even faint - error appearing on the face of his Honour's reasoning. The Crown quite properly makes no submission to the contrary. The sole ground of appeal is that the sentences imposed are manifestly inadequate: compare, for example, R v Baker [2000] NSWCCA 85 at [19] where the Chief Justice referred to
"… that category of appeals in which no particular error can be identified in the sentencing process and the Crown must rely on an assertion of manifest inadequacy as a basis for a conclusion that some error of principle must have occurred."
56 Having regard to principles such as those enunciated in Dinsdale and Geddes, and to the particularly detailed and thorough way in which his Honour approached the whole sentencing exercise, I do not consider that the sentences imposed by him were manifestly inadequate. In my opinion, this is particularly so having regard to the very strong subjective case of each respondent, outlined in his Honour's remarks on sentence to which I have referred. There is no doubt that the sentences are at the highest margin of leniency. The offences were objectively serious, they involved a degree of planning and the proceeds of the crime were never recovered. They involved a degree of violence as well. However, these are all matters that have been factored into the sentencing equation. In the end result, no error is demonstrated.
57 Even if I were wrong in that conclusion, and the view were available that the sentences are erroneously inadequate, I do not consider that this is a case in which this Court should intervene.