Hello everyone,
I've been lurking here for awhile now but have been unable to make up my mind on the choice between the two lenses listed above, or other close alternatives. I've spent 2 days with the Canon (loved the lens bare but only had a 2 x TC with me so no AF). I spent only 15 min with a used but mint Sigma 500 f4.5 and was impressed with most aspects of it as well. I currently shoot a Canon 70-200 2.8 II with the occasional (and often disappointing) 2 x TC III for surfing/windsurfing/kiteboarding on a 1DX and 7D (v1). I need more reach and image quality/focus speed, but the Canon 500 F4 is out of budget for now. I tend to shoot mostly at the long end, so wonder a bit if the 100-400 FL range is necessary for me even if it adds flexibility. The price of the older, used Sigma 500 is a few hundred more than the Canon 100-400 II. Weather sealing of the 100-400 is a huge plus, but not a complete deal breaker if a lens doesn't have it.
I'm also considering the 400 5.6 with a 1.4 TC, but have read the new 100-400 sharpness is superior, unless my recollection is mistaken Am I silly to consider the older Sigma when I can go for a 100-400 II with a 1.4 Tele with newer tech? Or do I wait until my budget creeps up into the 500 L v1 territory? The jump to the 1DX and longer focal lengths has been a recent one for me and I'm still fine tuning my needs. Thanks for any insights!
I've been lurking here for awhile now but have been unable to make up my mind on the choice between the two lenses listed above, or other close alternatives. I've spent 2 days with the Canon (loved the lens bare but only had a 2 x TC with me so no AF). I spent only 15 min with a used but mint Sigma 500 f4.5 and was impressed with most aspects of it as well. I currently shoot a Canon 70-200 2.8 II with the occasional (and often disappointing) 2 x TC III for surfing/windsurfing/kiteboarding on a 1DX and 7D (v1). I need more reach and image quality/focus speed, but the Canon 500 F4 is out of budget for now. I tend to shoot mostly at the long end, so wonder a bit if the 100-400 FL range is necessary for me even if it adds flexibility. The price of the older, used Sigma 500 is a few hundred more than the Canon 100-400 II. Weather sealing of the 100-400 is a huge plus, but not a complete deal breaker if a lens doesn't have it.
I'm also considering the 400 5.6 with a 1.4 TC, but have read the new 100-400 sharpness is superior, unless my recollection is mistaken Am I silly to consider the older Sigma when I can go for a 100-400 II with a 1.4 Tele with newer tech? Or do I wait until my budget creeps up into the 500 L v1 territory? The jump to the 1DX and longer focal lengths has been a recent one for me and I'm still fine tuning my needs. Thanks for any insights!