Hello Everyone, Would love your advice on this topic. Currently would like the ability to take nature shots. One of my Canon lens is 90-300mm. I find the cost of a good quality lens out of my range at the moment. But my teacher suggested Canon Extender Extender EF 2x II RRP $699.00 or Extender EF 1.4x II RRP $699.00 . Prices Australian Dollars. But the lens i have also thought of buying is alot more expensive EF 400mm f/5.6L USM RRP $2,699.00 . Would love your advice on this topic. Thankyou again for your wisdom and time. Chris:)