Here are the RF 600mm f/11 & RF 800mm f/11 super-telephoto lenses

AlanF

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In your previous post you mention you expect the 100-500 ...-f7.1 + 1.4TC to outresolve the 800mm f11 on the R5. It would be nice to see an actual side-by-side comparison to make sure of this (both for resolution and for contrast). It'd also be good to have confirmation to everyone considering what to buy with the R5 (whether to buy the 800 f11 or just add the RF 1.4TC to the 100-500).
Small differences in resolution may be well down the list of priorities when making choices. As BeenThere notes, price could be a major consideration, whereas versatility of a zoom vs prime, minimum focal distance, size etc are of overriding importance to others. I made a mistake when writing adding the 1.4xTC to the 100-500 outresolves the 800 f/11. I've modified it to:
  • The 800mm f/11 outresolves the 100-500mm f/7.1 on the R5 and R6, but adding the 1.4xTC to the zoom brings it closer to the 800mm prime.
 
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usern4cr

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Small differences in resolution may be well down the list of priorities when making choices. As BeenThere notes, price could be a major consideration, whereas versatility of a zoom vs prime, minimum focal distance, size etc are of overriding importance to others. I made a mistake when writing adding the 1.4xTC to the 100-500 outresolves the 800 f/11. I've modified it to:
  • The 800mm f/11 outresolves the 100-500mm f/7.1 on the R5 and R6, but adding the 1.4xTC to the zoom brings it closer to the 800mm prime.
Thanks for the clarification. I already have the R5 and RF 800mm f11. I'm going to get the RF 100-500. At the moment, I'm leaning towards *not* getting any RF TC for either of them and instead using them as-is and cropping the result if needed. A major (or huge to me) benefit of this is the framing of shots is much easier with the wider view (especially for BIF). Besides making framing easier, if I ever wanted a bit more image off a particular edge than the TC combo allowed, the as-is (non-TC combo) version gives me a ton of extra image to crop into when needed.
 
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AlanF

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Thanks for the clarification. I already have the R5 and RF 800mm f11. I'm going to get the RF 100-500. At the moment, I'm leaning towards *not* getting any RF TC for either of them and instead using them as-is and cropping the result if needed. A major (or huge to me) benefit of this is the framing of shots is much easier with the wider view (especially for BIF). Besides making framing easier, if I ever wanted a bit more image off a particular edge than the TC combo allowed, the as-is (non-TC combo) version gives me a ton of extra image to crop into when needed.
I am of like mind about wider field of view for BIF. I used to use 800mm/f8 on the 5DIV for slow moving far away big birds, and it was fine. But, 400 or 500mm on FF is so much easier for me, and you can catch them as they come much closer, which is when you get the best shots. I can't resist posting this puffin with sandeels, I tracked him with the 400mm on the 5DIV coming at me and got him close up. But, for Covid, I would have been back there this year. I am looking forward to eyeAF on the R5 for these shots when birds get close
2B4A9310-DxO_puffin+sandeels_flying_face_on_ss.jpg
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I am of like mind about wider field of view for BIF. I used to use 800mm/f8 on the 5DIV for slow moving far away big birds, and it was fine. But, 400 or 500mm on FF is so much easier for me, and you can catch them as they come much closer, which is when you get the best shots. I can't resist posting this puffin with sandeels, I tracked him with the 400mm on the 5DIV coming at me and got him close up. But, for Covid, I would have been back there this year. I am looking forward to eyeAF on the R5 for these shots when birds get closeView attachment 192507.
If I may ask Alan, where was this? You can decline without offending!

I did Puffins off the Northumberland coast when I was living in the UK but with mixed success. Had great fun shooting grey seals at a hidden location in Scotland (bet I've lost the google map for that one, ha ha).
 

AlanF

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Aug 16, 2012
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If I may ask Alan, where was this? You can decline without offending!

I did Puffins off the Northumberland coast when I was living in the UK but with mixed success. Had great fun shooting grey seals at a hidden location in Scotland (bet I've lost the google map for that one, ha ha).
Stu, I have very few secrets! It was the inner Farne Island, off that very coast. I had the 5DIV and 400mm DO II and no problem tracking these little fast flyers. There were others with very large whites on tripods who couldn't move their lenses fast enough and were complaining.
 
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Stu, I have very few secrets! It was the inner Farne Island, off that very coast. I had the 5DIV and 400mm DO II and no problem tracking these little fast flyers. There were others with very large whites on tripods who couldn't move their lenses fast enough and were complaining.
I don’t recall which one I went to, but thanks for the guidance Alan, appreciated. I will return with a smaller lens then next time!
 

AlanF

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I don’t recall which one I went to, but thanks for the guidance Alan, appreciated. I will return with a smaller lens then next time!
I had no problem panning them with the 5DIV set to the central 9 points. They are very fast but travel in absolutely straight lines.
 
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