Difference between equity share based payment and equity financial instruments

Hi, Equity share based payments would only be for employees or for the exchange of any other goods (purchase of inventory) or services (consultancy advice) to/from external parties. The issue in IFRS 2 is with regards the measurement of fair value. IFRS 2 provides the detail of how to measure fair value of the equity based share based payment. Equity financial instruments are where shares are issued to shareholders (new/existing) in return for cash or as part of a bonus issue. Here we know how much the shareholders pay for the shares and that the bonus issue of shares is done at nominal value. Thanks