18mm f/4 for APS-C sensor from PANASONIC [Patent]
PANASONIC filed a patent of 18mm f/4 for APS-C sensor.
Do they have a plan of L-mount camera with APS-C sensor?
【公開番号】特開2019-15827(P2019-15827A) click here
【公開日】平成31年1月31日(2019.1.31)
【発明の名称】単焦点撮像光学系、撮像装置、カメラシステム
Specification and lens arrangement of embodiment 1
Focal length: 18.0157 mm
F number: 4.10720
Half angle of view: 38.5407
Image height: 13.2000 mm
Lens length: 34.5079 mm
Back focus: 15.18901 mm
This lens is able to make as an interchangeable one for mirrorless.
"204" and "304" are lens mount.
Do they have a plan of L-mount camera with APS-C sensor?
【公開番号】特開2019-15827(P2019-15827A) click here
【公開日】平成31年1月31日(2019.1.31)
【発明の名称】単焦点撮像光学系、撮像装置、カメラシステム
Specification and lens arrangement of embodiment 1
Focal length: 18.0157 mm
F number: 4.10720
Half angle of view: 38.5407
Image height: 13.2000 mm
Lens length: 34.5079 mm
Back focus: 15.18901 mm
This lens is able to make as an interchangeable one for mirrorless.
"204" and "304" are lens mount.
Snowy day and night [Light in the Night]
ARRI Ultra Wide Zoom UWZ 9.5-18/T2.9 is manufactured by nittoh [Patent]
Camellia japonica [Square World]
Pantent of 14-30mm f/4 from NIKON [Patent]
NIKON filed patent of 14-29mm f/4 zoom lens for 35mm full-frame mirrorless.
Any one embodiment in this patent may be NIKKOR Z 14-30mm f/4 S.
【公開番号】特開2019-8031(P2019-8031A) click here
【公開日】平成31年1月17日(2019.1.17)
【発明の名称】変倍光学系、光学装置および変倍光学系の製造方法
Specification and lens arrangement of embodiment 1
Focal length: 14.420~20.000~29.101 mm
F number: 4.00~4.00~4.00
Half angle of view: 57.68°~46.85°~35.27°
Image height: 21.70 mm
Lens length: 126.464~116.239~114.999 mm
Back focus: 21.360~26.809~36.297 mm
Any one embodiment in this patent may be NIKKOR Z 14-30mm f/4 S.
【公開番号】特開2019-8031(P2019-8031A) click here
【公開日】平成31年1月17日(2019.1.17)
【発明の名称】変倍光学系、光学装置および変倍光学系の製造方法
Specification and lens arrangement of embodiment 1
Focal length: 14.420~20.000~29.101 mm
F number: 4.00~4.00~4.00
Half angle of view: 57.68°~46.85°~35.27°
Image height: 21.70 mm
Lens length: 126.464~116.239~114.999 mm
Back focus: 21.360~26.809~36.297 mm
Winter strawberry [Small Square World]
24mm F1.0 for APS-H from CANON [Patent]
Yesterday, I posted a patent of CANON.
That patent described a optics of 24mm F1.0 for APS-H as follows.
Specification and lens arrangement of master lens 2 with reducer 5
Focal length: 23.92 mm
F number: 1.02
Half angle of view: 32.33
Image height: 15.14 mm
Lens length: 125.59 mm
Back focus: 2.00 mm
That patent described a optics of 24mm F1.0 for APS-H as follows.
Specification and lens arrangement of master lens 2 with reducer 5
Focal length: 23.92 mm
F number: 1.02
Half angle of view: 32.33
Image height: 15.14 mm
Lens length: 125.59 mm
Back focus: 2.00 mm
18-55mm F2.8 for APS-C, 34mm F1.4 for 35mm full-frame and their reducers from CANON [Patent]
CANON filed a patent containing 18-55mm F2.8 for APS-C, 34mm F1.4 for 35mm full-frame and their reducer lenses.
【公開番号】特開2019-3074(P2019-3074A) click here
【公開日】平成31年1月10日(2019.1.10)
【発明の名称】コンバータレンズ及びそれを有する撮像装置
Specification and lens arrangement of master lens 1 (18-55mm, F2.8)
Zoom ratio: 3.05
Focal length: 17.50 - 53.35 mm
F number: 2.80 - 2.80
Half angle of view: 36.65 - 13.71
Image height: 13.02 - 13.02 mm
Lens length: 148.81 - 172.70 mm
Back focus: 35.51 - 40.31 mm
Specification and lens arrangement of master lens 1 with reducer 1
Focal length: 11.36 mm
F number: 1.82
Half angle of view: 36.67
Image height: 8.46 mm
Lens length: 142.26 mm
Back focus: 2.00 mm
Specification and lens arrangement of master lens 2 (34mm, F1.4)
Focal length: 34.20 mm
F number: 1.45
Half angle of view: 32.32
Image height: 21.64 mm
Lens length: 129.16 mm
Back focus: 39.35 mm
Specification and lens arrangement of master lens 2 with reducer 5
Focal length: 23.92 mm
F number: 1.02
Half angle of view: 32.33
Image height: 15.14 mm
Lens length: 125.59 mm
Back focus: 2.00 mm
【公開番号】特開2019-3074(P2019-3074A) click here
【公開日】平成31年1月10日(2019.1.10)
【発明の名称】コンバータレンズ及びそれを有する撮像装置
Specification and lens arrangement of master lens 1 (18-55mm, F2.8)
Zoom ratio: 3.05
Focal length: 17.50 - 53.35 mm
F number: 2.80 - 2.80
Half angle of view: 36.65 - 13.71
Image height: 13.02 - 13.02 mm
Lens length: 148.81 - 172.70 mm
Back focus: 35.51 - 40.31 mm
Specification and lens arrangement of master lens 1 with reducer 1
Focal length: 11.36 mm
F number: 1.82
Half angle of view: 36.67
Image height: 8.46 mm
Lens length: 142.26 mm
Back focus: 2.00 mm
Specification and lens arrangement of master lens 2 (34mm, F1.4)
Focal length: 34.20 mm
F number: 1.45
Half angle of view: 32.32
Image height: 21.64 mm
Lens length: 129.16 mm
Back focus: 39.35 mm
Specification and lens arrangement of master lens 2 with reducer 5
Focal length: 23.92 mm
F number: 1.02
Half angle of view: 32.33
Image height: 15.14 mm
Lens length: 125.59 mm
Back focus: 2.00 mm
Chrysanthemum at last [Small Square World]
雲を通して優しくなった朝日の中で、菊花を撮影しました。
Camera: Sigma DP3 Merrill, Lens: 50mm f/2.8 with Close-Up lens (Canon 250D), Aper.: f/8.0, Ex.: 1/40 sec, ISO: 100, Image area size.: 1 x 1 cm.
セコニックの標準反射板でホワイトバランスを取っています。
ようやく違和を感じない色になったかなと思います。
Foveon X3 センサーは色の再現が難しいといわれます。晴れた日の太陽光のようにブロードな波長成分をもつ照明光では安定していると感じますので、スペクトルが偏った人工光が苦手なのでしょう。
シグマはフラッシュメーカーでもあるので、純正フラッシュを試してみたいですね。
Camera: Sigma DP3 Merrill, Lens: 50mm f/2.8 with Close-Up lens (Canon 250D), Aper.: f/8.0, Ex.: 1/40 sec, ISO: 100, Image area size.: 1 x 1 cm.
セコニックの標準反射板でホワイトバランスを取っています。
ようやく違和を感じない色になったかなと思います。
Foveon X3 センサーは色の再現が難しいといわれます。晴れた日の太陽光のようにブロードな波長成分をもつ照明光では安定していると感じますので、スペクトルが偏った人工光が苦手なのでしょう。
シグマはフラッシュメーカーでもあるので、純正フラッシュを試してみたいですね。