01-12-2022 08:11 PM
Has anyone taken a close look at the image quality and usability(focusing etc) of the Canon 800mm f11 vs the Sigma 150-600's with the 1.4 TC? I own the Sigma and am considering the 800 as a lighter native RF option with an EOS R.
thanks in advance
01-12-2022 08:14 PM
Not much of choice, IMHO. RF 800 is a better choice. You will not have edge to edge AF points, but you should get much better performance over the Sigma.
01-12-2022 08:15 PM - edited 01-12-2022 08:53 PM
Thanks. What would your choice be assuming a budget of around $2500?
BTW, it appears that most focus points are available with the Sigma and the TC-more than the 800 RF f11
01-13-2022 10:28 AM - edited 01-13-2022 11:28 AM
For that budget, I’d trade in the EOS R for an R6 and the RF 600mm or 800mm.
01-15-2022 06:12 AM
I'm holding out for an R5 or , hopefully, R7. I shoot a lot of birds and have to crop. At least the R5 in crop mode would be close to 20mpx before cropping.
01-13-2022 11:18 AM - edited 01-13-2022 11:18 AM
I can only comment on the 150~600C and 1.4x TC which I own also. Its a very nice lens / combo.
I agree with wadizzle's thought process. No reason to upgrade to a Sigma S since you are already using an RF mount and plan to continue in that direction. Nothing wrong with a control ring adapter, but if your body is RF there is no reason not to go with RF mount glass moving forward.
This will hopefully (and finally) be a better year for mirrorless. R3 kicked it off. R5c shortly (announcement anyways) and R7~R9 also coming.
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01-15-2022 06:01 AM
Definitely holding out for that crop sensor R body camera. If that doesn't happen within a year, I'll probably go with the R5. I'm just not sure about R6 20mpx considering the cropping I do for birds. I know that's a great sensor---but.
I'm very happy with the Sigma C and TC combo. Much better than I'd imagined and even better on the EOS R body. I never did do any micro adjustment on my 6D II. I'd love to move to the Canon RF 100-500 with TC , but man is that pricey right now.
01-15-2022 12:10 PM
"I'm very happy with the Sigma C and TC combo."
I am or was an owner of all the 150-600mm super zooms. Tamron, Tamron G2, Sigma C, Sigma S. I have since sold off all but the Sigma Sport. It is my goto favorite super zoom lens but the difference in IQ between it and my C was so insignificant to almost be nonexistent. The Tamron G2 is probably your best of the bunch if IQ is your manin most thing.
I personally do not like any tel-con on any of these lenses and don't recommend it to anyone else. But if you must use the same brand tel-con as lens manufacturer.
"Canon 800mm f11 ...."
Again, personally I would not buy any f11 max aperture lens especially if a tel-con was being considered. It just too great of a handicap to start right out of the gate. There is always a great debate as to whether adding a tel-con or simply doing a crop in post is best. Using a tel-con and also doing a severe crop in post has to be the absolute worst case, again, IMHO.
01-15-2022 01:01 PM
Yes, TC and cropping is no good. I do have the Sigma TC for the 150-600 and the Canon 1.4 iii extender I use with the old Canon 400 f5.6.
I really was never too happy with the results of either of them on my 6Dii or 80D, but I have to say I'm getting some pretty usable images using the EOS R with the adapter..
I just rented the 800 f11 and it's actually OK. Not horrible in morning and afternoon light and images clean up pretty well with Topaz Denoise, but definitely would not use a TC with it.
01-15-2022 12:13 PM
"Definitely holding out for that crop sensor R body camera."
Here again it will depend highly on the sensor and not the crop vs FF difference.
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