macro-F1和micro-F1得分分别适用于什么场景？ - 知乎
但每种情况下选用macro-F1、micro-F1，会有一些特例情况产生，下面就针对以上场景，一个个举例给大家看看，到底macro-F1、micro-F1在什么情况下选用会更合适。 第1种情况：各个类别 …
Tamron Adaptall-2 SP (52B/52BB) 90mm F2.5 Lens Reviews
Jul 17, 2025 · Tamron Adaptall-2 SP (52B/52BB) 90mm F2.5 reviews and specifications. [i]"A very good 1:2 macro lens with above average resolution and contrast. Performance is fairly similar …
S-M-C/Super Macro-Takumar 50mm F4 - Pentax Forums
Feb 21, 2025 · S-M-C/Super Macro-Takumar 50mm F4 lens reviews and specifications. The Takumar 50 mm f/4 is a series of legendary manual-focus macro lenses for M42 screw-mount …
Sigma Lenses for Pentax: Zoom Lenses - Pentax Lens Review …
Reviews of lenses by Sigma, Tamron, Tokina, Zeiss, Zenitar, and others designed for Pentax cameras. Comprehensive Pentax lens database with specifications and user opinions.
PSA: No Macro Photography on iPhone Air | MacRumors Forums
Sep 9, 2025 · For anyone considering the Air, if Macro photography support is important to you, this is the only phone in the lineup that doesn’t have it. Was considering the Air until I saw this. …
纳米材料方向，如何排序AM、AFM、ACS Nano、Nano Letters …
AM，AFM，ACS Nano，Nano Letters，Small，Nano Research如何排序？如还有其他期刊欢迎补充补充：还有Nat…
Miscellaneous Lenses for Pentax: Zoom Lenses - Pentax ... - Pentax …
Reviews of lenses by Sigma, Tamron, Tokina, Zeiss, Zenitar, and others designed for Pentax cameras. Comprehensive Pentax lens database with specifications and user opinions.
SMC Pentax-F 35-135mm F3.5-4.5
Dec 29, 2023 · The SMC Pentax-F 35-135 mm f/3.5-4.5 is a full-frame autofocus zoom introduced in 1987 for the Pentax KAF mount, designed as a versatile walkaround lens for film SLRs. It …
Takumar-F 28-80mm F3.5-4.5 Reviews - Pentax Forums
Nov 29, 2024 · Takumar-F 28-80mm F3.5-4.5 lens reviews and specifications. This autofocus zoom lens has no SMC coating and is identical to the PENTAX-F 28-80mm lens. It has a …
SMC Pentax 67 100mm F4 Macro
Dec 24, 2020 · SMC Pentax 67 100mm F4 Macro lens reviews and specifications. Macro lens in standard focal length for the Pentax 6x7 system. The lens itself provides half life size …