berimbolo wrote: AGeoJO wrote: berimbolo wrote: AGeoJO wrote: arbitrage wrote: Douglas L wrote:
Would love to see if the 300 GM+2X TC is sharper than the 200-600 at 600mm. May get one to shoot hummingbirds in my yards if it's sharper. I have no use for 300mm, so it may be silly to buy a 300mm lens to use it with a 2X TC all the time.
It is silly. Especially when you own all the native 600mm lenses you do
I agree with Geoff. There is no free lunch if it is coming down of using TCs. I use them but I don’t expect wonders though. One aspect that proves to be true though. At 600mm setting, the 200-600mm lens has a narrower FOV compared to the 300mm plus 2X. That shows that the actual FL on the long end is probably closer to 550mm or so. But we knew that, didn’t we 😃?
Sorry, are you saying that the 300GM isn't actually 300mm (ie. 300GM + 2xTC ~= 550mm)? Or did you mean to say the 200-600 has a wider FOV compared to the 300+2x?
It is the later. In other words, at 600mm setting the zoom lens is not actually 600mm but closer to 550mm. I noticed that when compared to the prime GM 600mm lens on the first day I compared both in 2019.
This is only the case at shorter focusing distances, right? I had read that at around 12-15m out, the 200-600 at 600mm gives a similar FOV to the 600GM.
I did that under controlled conditions on tripod in my backyard and that’s pretty much the only way that I noticed that. And yes, the distance was fairly close. I venture to guess that it was similar to what Alex did and presented above. I couldn’t tell the difference under real life shooting conditions after that, but I didn’t do any comparison anyway since it didn’t make sense doing.
Nov 26, 2023 at 11:05 AM
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