FUJIFILM Logo
  • VÖRUR
    VÖRUR
    • Skoða
      • Myndavélar
      • Linsur
      • Fylgihlutir
      • Hugbúnaður
    • Vörur eftir kerfi
      • GFX
        • Myndavélar
        • Linsur
      • X Kerfið
        • Myndavélar
        • Linsur
    • Group Items ( Link disabled )
      • Compare
        • Myndavélar
      • Um vörurnar okkar
        • Film Simulation
        • X-Trans CMOS
    • B2B Customers
      • Digital Imaging Solution
    GFX View all
    Myndavélar Spegillausar myndavélar
    • GFX100 II
      GFX100 II
    • GFX100S II
      GFX100S II
    • GFX50S II
      GFX50S II
    Fixed Lens Camera
    • GFX100RF
      GFX100RF
    GFX View all
    Linsur Fastar linsur
    • GF23mmF4 R LM WR
      GF23mmF4 R LM WR
    • GF30mmF3.5 R WR
      GF30mmF3.5 R WR
    • GF45mmF2.8 R WR
      GF45mmF2.8 R WR
    • GF50mmF3.5 R LM WR
      GF50mmF3.5 R LM WR
    • GF55mmF1.7 R WR
      GF55mmF1.7 R WR
    • GF63mmF2.8 R WR
      GF63mmF2.8 R WR
    • GF80mmF1.7 R WR
      GF80mmF1.7 R WR
    • GF110mmF2 R LM WR
      GF110mmF2 R LM WR
    • GF120mmF4 R LM OIS WR Macro
      GF120mmF4 R LM OIS WR Macro
    • GF250mmF4 R LM OIS WR
      GF250mmF4 R LM OIS WR
    • GF500mmF5.6 R LM OIS WR
      GF500mmF5.6 R LM OIS WR
    Aðdráttarlinsur
    • GF20-35mmF4 R WR
      GF20-35mmF4 R WR
    • GF32-64mmF4 R LM WR
      GF32-64mmF4 R LM WR
    • GF35-70mmF4.5-5.6 WR
      GF35-70mmF4.5-5.6 WR
    • GF45-100mmF4 R LM OIS WR
      GF45-100mmF4 R LM OIS WR
    • GF100-200mmF5.6 R LM OIS WR
      GF100-200mmF5.6 R LM OIS WR
    Tilt-Shift
    • GF30mmF5.6 T/S
      GF30mmF5.6 T/S
    • GF110mmF5.6 T/S Macro
      GF110mmF5.6 T/S Macro
    Dobblari
    • GF1.4X TC WR
      GF1.4X TC WR
    X Kerfið View all
    Myndavélar Spegillausar myndavélar
    • X-H2S
      X-H2S
    • X-H2
      X-H2
    • X-Pro3
      X-Pro3
    • X-T5
      X-T5
    • X-T4
      X-T4
    • X-S20
      X-S20
    • X-T50
      X-T50
    • X-T30 II
      X-T30 II
    • X-E4
      X-E4
    • X-M5
      X-M5
    Fixed Lens Camera
    • X100VI
      X100VI
    • X half
      X half
    X Kerfið View all
    Linsur Fastar linsur
    • XF8mmF3.5 R WR
      XF8mmF3.5 R WR
    • XF14mmF2.8 R
      XF14mmF2.8 R
    • XF16mmF1.4 R WR
      XF16mmF1.4 R WR
    • XF16mmF2.8 R WR
      XF16mmF2.8 R WR
    • XF18mmF1.4 R LM WR
      XF18mmF1.4 R LM WR
    • XF18mmF2 R
      XF18mmF2 R
    • XF23mmF1.4 R
      XF23mmF1.4 R
    • XF23mmF1.4 R LM WR
      XF23mmF1.4 R LM WR
    • XF23mmF2 R WR
      XF23mmF2 R WR
    • XF27mmF2.8 R WR
      XF27mmF2.8 R WR
    • XF30mmF2.8 R LM WR Macro
      XF30mmF2.8 R LM WR Macro
    • XF33mmF1.4 R LM WR
      XF33mmF1.4 R LM WR
    • XF35mmF1.4 R
      XF35mmF1.4 R
    • XF35mmF2 R WR
      XF35mmF2 R WR
    • XF50mmF1.0 R WR
      XF50mmF1.0 R WR
    • XF50mmF2 R WR
      XF50mmF2 R WR
    • XF56mmF1.2 R WR
      XF56mmF1.2 R WR
    • XF56mmF1.2 R APD
      XF56mmF1.2 R APD
    • XF60mmF2.4 R Macro
      XF60mmF2.4 R Macro
    • XF80mmF2.8 R LM OIS WR Macro
      XF80mmF2.8 R LM OIS WR Macro
    • XF90mmF2 R LM WR
      XF90mmF2 R LM WR
    • XF200mmF2 R LM OIS WR
      XF200mmF2 R LM OIS WR
    • XF500mmF5.6 R LM OIS WR
      XF500mmF5.6 R LM OIS WR
    • XC35mmF2
      XC35mmF2
    Aðdráttarlinsur
    • XF8-16mmF2.8 R LM WR
      XF8-16mmF2.8 R LM WR
    • XF10-24mmF4 R OIS WR
      XF10-24mmF4 R OIS WR
    • XF16-50mmF2.8-4.8 R LM WR
      XF16-50mmF2.8-4.8 R LM WR
    • XF16-55mmF2.8 R LM WR II
      XF16-55mmF2.8 R LM WR II
    • XF16-55mmF2.8 R LM WR
      XF16-55mmF2.8 R LM WR
    • XF16-80mmF4 R OIS WR
      XF16-80mmF4 R OIS WR
    • XF18-55mmF2.8-4 R LM OIS
      XF18-55mmF2.8-4 R LM OIS
    • XF18-120mmF4 LM PZ WR
      XF18-120mmF4 LM PZ WR
    • XF18-135mmF3.5-5.6 R LM OIS WR
      XF18-135mmF3.5-5.6 R LM OIS WR
    • XF50-140mmF2.8 R LM OIS WR
      XF50-140mmF2.8 R LM OIS WR
    • XF55-200mmF3.5-4.8 R LM OIS
      XF55-200mmF3.5-4.8 R LM OIS
    • XF70-300mmF4-5.6 R LM OIS WR
      XF70-300mmF4-5.6 R LM OIS WR
    • XF100-400mmF4.5-5.6 R LM OIS WR
      XF100-400mmF4.5-5.6 R LM OIS WR
    • XF150-600mmF5.6-8 R LM OIS WR
      XF150-600mmF5.6-8 R LM OIS WR
    • XC15-45mmF3.5-5.6 OIS PZ
      XC15-45mmF3.5-5.6 OIS PZ
    • XC50-230mmF4.5-6.7 OIS II
      XC50-230mmF4.5-6.7 OIS II
    Dobblari
    • XF1.4X TC WR
      XF1.4X TC WR
    • XF2X TC WR
      XF2X TC WR
    Kvikmyndalinsur
    • MKX18-55mmT2.9
      MKX18-55mmT2.9
    • MKX50-135mmT2.9
      MKX50-135mmT2.9
  • SUPPORT
    SUPPORT
    • Download
      • Firmware
      • Hugbúnaður
      • LUT
    • Manuals
      • Myndavélar
      • Linsur
      • Fylgihlutir
      • Hugbúnaður
    • Compatibility
      • Myndavélar
      • Linsur
      • Fylgihlutir
      • Hugbúnaður
    • More Links
      • FAQ
  • FRÉTTIR
  • ATBURÐIR
  • VERSLA
  • X-Photographer
    • Gallerý
    • Ljósmyndarar
  • X Sögur
©FUJIFILM Corporation.

Home › X Sögur › Is the X-Pro2 AF Faster?

Is the X-Pro2 AF Faster?

03.03.2016
Written by... FUJIFILM
  • Facebook
  • X
  • LinkedIn
  • Email

“The AF is faster”
That is the impression that many users are left with, when they test the new X-Pro2 that are now being displayed in many showrooms and in stores.
It is not hard to imagine that many of those that are eager to test the X-Pro2 are the X-Pro1 users. X-Pro2 has seen a major improvement in AF performance compared to the X-Pro1. So the above impression is in fact “true”. But if you are comparing the speed with the X-T1, X-E2 or X-T10 (cameras with phase detection AF), then your impression is “wrong in terms of numbers, but true feeling-wise.”
“The fastest AF speed”of the X-Pro2, measurement based on the CIPA guideline, is same as other cameras with the phase detection AF. X-Pro2 is not breaking the record of the AF fastest speed of the X Series.
“The fastest AF speed” is a bit tricky one. This measurement is conducted under a particular environment specified by the guideline. So the shooting scene inevitably gets detached from the real shooting environment. The score of the AF speed isn’t necessarily what the users experience in reality. Therefore we say it is “wrong in terms of numbers, but true feeling-wise”.

Image
Image

“The fastest AF speed” may be nothing but a talk, but it is good to understand the concept of it, regardless. If the Phase Detection AF is enabled, then the AF speed gets pretty close to the fastest value. If it is driven by the Phase Detection AF, then the focus lens moves by the shortest distance.
So expanding the phase detection area is first item to consider to make the AF “faster”.
The X-Trans CMOS III doubled the Phase Detection area when compared with the X-Trans CMOS II. By extending the area as much as possible, most of the subject, scenery can now be covered.

Image

It is also important to cover the weak point of Phase Detection AF. It does not work well for the low contrast subject and high frequency range subject.
The algorithm needs to be brushed up to enhance the performance. But this requires tons of work. Countless patterns, chart and scenery are considered in order to build the improved algorithm for the PD pixels on the X-Trans CMOS III. It is important to improve the accuracy, but if the algorithm pattern requires time to process, then it is meaningless. False recognition should also be avoided. Testing only help algorithm get closer to the perfection. And to process all this, X Processor Pro, which has 4x the power of the previous processor will be in place.

Image

Example of low contrast subject

Image

Example of high frequency subject

No matter what, there will be some circumstances where the Phase Detection AF will not work. And this is actually the most important point.
If the PDAF isn’t working, then stop trying if you are using DSLR. The only solution will be MF. But in case of mirrorless cameras, it will be switched to contrast AF. If the performance of contrast AF is improved, then the AF performance as a whole will be improved.
Conan Doyle once said “A chain is no stronger than its weakest link.”  In case of AF, it can be said the speed of contrast AF determines the power of the AF, not the fastest Phase Detection AF.
In order to enhance the contrast AF performance of X-Pro2, the system as a whole has been looked over.
First is the X-Trans CMOS III sensor. To read the contrast, it drives at the speed of 384fps. This is double the speed of the X-Trans CMOS II, 4 times faster than the original X-Trans CMOS. And the readout signal are processed, in a timely manner, by the X Processor Pro.
Next are the lenses. In order to work with the readout and the processed signals, the microcomputer of the lenses need to be updated.
The physical parts (optical design and mechanical design) also need to be compatible with the fast readout that are driven from the microcomputer. In essence, the fast and accurate focus lens unit and actuator are required. With all this in place, fast contrast AF is realized.

Image

Unfortunately, there are only 5 XF lenses that can receive the benefit of the fast contrast AF: XF16-55mm, XF50-140mm, XF90mm, XF35mmF2, and the XF100-400mm.
The wide angle lenses such as XF10-24mm and the XF14mm already have fast AF. We can say that the fast AF can be enjoyed through the entire focal range. Use and enjoy switching lenses that are most suitable for each scene.

Image
Featured Products
XF90mmF2 R LM WR
XF35mmF2 R WR
XF16-55mmF2.8 R LM WR
XF100-400mmF4.5-5.6 R LM OIS WR
XF50-140mmF2.8 R LM OIS WR
  • VÖRUR
    • Myndavélar
    • Linsur
    • Fylgihlutir
    • Hugbúnaður
  • SUPPORT
    • Downloads
    • Manuals
    • Compatibility
    • FAQ
    • Product Security Information
  • MORE LINKS
    • FRÉTTIR
    • ATBURÐIR
    • VERSLA
    • X-Ljósmyndarar
    • X Sögur
Follow Us
  • Global
FUJIFILM ©FUJIFILM Corporation.
  • Contact
  • Privacy Policy
  • Terms of Use
  • Cookie Settings
Select Your Country Or Region
  • America
    • pt-br

      Brazil

    • en-ca

      Canada

      • English
      • French
    • en-us

      USA

  • Asia Pacific
    • zh-cn

      China

    • en-in

      India

    • id-id

      Indonesia

    • ja-jp

      Japan

    • ko-kr

      Korea

    • en-my

      Malaysia

    • en-ph

      Philippines

    • en-sg

      Singapore

    • th-th

      Thailand

    • vi-vn

      Vietnam

  • Europe
    • de-at

      Austria

    • fr-be

      Belgium

      • Dutch
      • French
    • hr-hr

      Croatia

    • cs-cz

      Czechia

    • da-dk

      Denmark

    • et-ee

      Estonia

    • fi-fi

      Finland

    • fr-fr

      France

    • de-de

      Germany

    • el-gr

      Greece

    • hu-hu

      Hungary

    • is-is

      Iceland

    • en-ie

      Ireland

    • it-it

      Italy

    • lv-lv

      Latvia

    • lt-lt

      Lithuania

    • nl-nl

      Netherlands

    • no-no

      Norway

    • pl-pl

      Poland

    • pt-pt

      Portugal

    • ro-ro

      Romania

    • ru-ru

      Russia

    • sk-sk

      Slovakia

    • sl-si

      Slovenia

    • es-es

      Spain

    • sv-se

      Sweden

    • fr-ch

      Switzerland

      • French
      • German
    • tr-tr

      Turkey

    • en-gb

      UK

    • uk-ua

      Ukraine

  • Oceania
    • en-au

      Australia

    • en-nz

      New Zealand

  • Other
    • global

      Global