forum.optyczne.pl

[Arek]

Zapraszam:

http://www.optyczne.pl/in...ywu&test_ob=351

Arek

[Wojmistrz]

No szkiełko przyjemne tylko ta winieta

[Arek]

W każdej 1.4/24 winieta jest ogromna.

[Wojmistrz]

Wiem, ale mogła by być nieco mniejsza.

[MM]

[Arek]

[ryszardo]

Podoba mi się kierunek, w jakim idzie Sigma. Nie tylko robią świetne obiektywy w niezłych cenach, ale są pod tym względem powtarzalni.

Zastanawia mnie, co dalej? Będzie pewnie 135/~2,0 odświeżone 85/1,4 i co później? Skończą na tym? Czy może coś pokroju 18/2,0? To by było ciekawe.

[Arek]

ryszardo, sądząc po wyprzedażach szykuje się:

1. 24-70 f/2.8
2. UWA na APS-C
3. 17-50 f/2.8 na APS-C (chociaż to może mieć taką cenę ze względu na 18-35 f/1.8)

Po coś też pokazali nowe konwertery więc obstawiam 2.8/300.

[ryszardo]

[dcs]

"dpreview: Is it difficult to correct for certain formats like Sony's full-frame Alpha series which have very short flange-back distances? Is that one of the reasons why we're not seeing Sigma lenses for those systems?

Kazuto Yamaki, CEO of Sigma: No - we want to increase our lineup for mirrorless cameras, but it's just a matter of priorities.

dpreview: Can you give us an idea of your current priorities?

Kazuto Yamaki: DSLRs first, particularly Canon and Nikon, since most of our customers use those systems. And after that mirrorless. Sony FE-mount.

[więc to nie ich priorytet http://www.optyczne.pl/80...em_Sony_FE.html ]


dpreview: A lens like Sony's Zeiss 55mm F1.8 for the FE mount is optically superb but quite small and light. If you were to design 'Art' lenses for that system, would you try to strike a different balance between quality and size, and try to make the lenses smaller?

Kazuto Yamaki: Yes - that's also one of the segments we're interested in. Another motivation for us to make new lenses is to differentiate between other manufacturers. Sony already has a 55mm F1.8 which is nicely sized and reasonably priced, so why make another? But F1.4 compared to F1.8 is a huge difference, so we'd either make a F1.4, or something different.
...

dpreview: What do you want to do next, in the 'Art' lineup?

Kazuto Yamaki: The base concept is the best possible quality. The other challenge is to make something innovative which has never existed in the past. Actually, the new Canon 11-24mm is very impressive. That's a really good lens. It's expensive though.

dpreview: Do you think there's an opportunity for Sigma in the ultra-wide zoom segment?

Kazuto Yamaki: Yes, we need to [get involved]. We're a pioneer of wide-angle zoom lenses. In the 70's we developed a 21-35mm manual lens, which I believe was the first real wide-angle zoom lens. Then we developed an 18-35mm, then a 17-35mm, then a 15-35mm, and a 12-24mm. We've always developed wide-angle zoom lenses. Canon has broken our record! We need to refresh this product line."

dpreview: What are your customers asking you to do next in the Art-series lineup?

Kazuto Yamaki The biggest request is for a 24-70mm F2.8. Then macro lenses, and also a wideangle zoom lens, something like a 14-24mm."

http://www.dpreview.com/a...sigma-interview

"dpreview: Is it difficult to correct for certain formats like Sony's full-frame Alpha series which have very short flange-back distances? Is that one of the reasons why we're not seeing Sigma lenses for those systems?

Kazuto Yamaki, CEO of Sigma: No - we want to increase our lineup for mirrorless cameras, but it's just a matter of priorities.

dpreview: Can you give us an idea of your current priorities?

Kazuto Yamaki: DSLRs first, particularly Canon and Nikon, since most of our customers use those systems. And after that mirrorless. Sony FE-mount.

[więc to nie ich priorytet http://www.optyczne.pl/80...em_Sony_FE.html ]


dpreview: A lens like Sony's Zeiss 55mm F1.8 for the FE mount is optically superb but quite small and light. If you were to design 'Art' lenses for that system, would you try to strike a different balance between quality and size, and try to make the lenses smaller?

Kazuto Yamaki: Yes - that's also one of the segments we're interested in. Another motivation for us to make new lenses is to differentiate between other manufacturers. Sony already has a 55mm F1.8 which is nicely sized and reasonably priced, so why make another? But F1.4 compared to F1.8 is a huge difference, so we'd either make a F1.4, or something different.
...

dpreview: What do you want to do next, in the 'Art' lineup?

Kazuto Yamaki: The base concept is the best possible quality. The other challenge is to make something innovative which has never existed in the past. Actually, the new Canon 11-24mm is very impressive. That's a really good lens. It's expensive though.

dpreview: Do you think there's an opportunity for Sigma in the ultra-wide zoom segment?

Kazuto Yamaki: Yes, we need to [get involved]. We're a pioneer of wide-angle zoom lenses. In the 70's we developed a 21-35mm manual lens, which I believe was the first real wide-angle zoom lens. Then we developed an 18-35mm, then a 17-35mm, then a 15-35mm, and a 12-24mm. We've always developed wide-angle zoom lenses. Canon has broken our record! We need to refresh this product line."

dpreview: What are your customers asking you to do next in the Art-series lineup?

Kazuto Yamaki The biggest request is for a 24-70mm F2.8. Then macro lenses, and also a wideangle zoom lens, something like a 14-24mm."

http://www.dpreview.com/a...sigma-interview

[Wojmistrz]

Po co bez winiety? Niektórzy filmują Dramat nakręcisz, ale do komedii się nie nadaje.

[komor]

Tak offtopicznie, są w programach do montażu jakieś filtry/pluginy właśnie do usuwania winiety?

[Wojmistrz]

Przyznam, że nie próbowałem nigdy jej korygować w filmie. Samo działanie kodeków powoduje, że dobry obraz jest tylko w centrum obrazu. Oczywiście przy VideoRAW można robić cuda jak z każdym innym RAW.

[siosio]