(01-29-2020, 11:35 AM)Kunzite Wrote: So I am the troll, not the guy spewing crap about a system he has no interest in. Riiiight. You started by pointing fingers to imaginary fanboys, so I'm not surprised. What's next? Come on, you can do more name calling - all while bashing this pesky brand, of course. But no parroting, that's lame.You spew crap indeed, no idea why you do that. You say the rebadged Tamron lens is not a badged Tamron lens. You claim the lens may have different optics, even though there is no evidence for that and the evidence against that gets just shoved aside.
Why won't you read what you wrote? You said the Nikkor was criticized, not that you criticized it yourself.
And you might be surprised, but you're just a small online existence among many others - I don't watch what you're doing, I only have the total displeasure of meeting you here because this is a Pentax forum I'm occasionally visiting (and you're occasionally trolling). If you indeed criticized the Nikkor, me not knowing is not the same as "hiding under a rock". Delusion much?
What's the source for the 135mm? Prove every claim of yours, as I can't trust anything you're saying.
But anyway, the D FA* having a focus breathing issue doesn't mean it's anything other than an excellent lens.
Focus breathing is nothing more than a change in focal length as you're focusing. The Tamron keeping close to its nominal focal length means it doesn't have a focus breathing issue.
It's really simple, don't try pretending you're some sort of an expert. You're not fooling anyone.
You call objective observations "a lie".
Then you go on calling me a troll because, in part, I point out the negative focus breathing the Pentax 70-200mm has, and to trap me, ask if I say the same about a past Nikkor. When I make your trap worthless, you say "delusion much?".... Yep, you sure are a trolling.
And the published Pentax/Ricoh specs are the source for the <135mm. Proof? The How about the product website? The rebadged Tamron stays close to 210mm, and achieves 0.32x at 95cm. Lets assume that the focal length at 95cm focus distance still is 200mm. So, 0.32x for 200mm at 95cm distance. The Pentax does 0.13x @ 1.2mm focus distance. That will make 0.13 / 0.95 * 1.20 = 0.164x at 0.95m focus distance.
So, rebadged Tamron f4 reaches 0.32x at 0.95mm for 200mm focal length. The Pentax f2.8 would reach about 0.164x at 0.95mm. 200 / 0.32 x 0.164 = 102mm. 102mm is indeed smaller than 135mm.
Even if we we would make the nonsense assumption that the Tamron remains 210mm at MFD we still end up with just 107mm at MFD for the Pentax.
Now you call yourself educated, again.