Pentax smc FA 645 400mm f/5.6 ED IF Lens

Model #26555

USA Version
Pentax 26555 1
Pentax 26555 1
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Specifications

General Information

Tripod Collar Yes
Focal Length 400 mm
Aperture Maximum: f/5.6
Minimum: f/45
Camera Mount Pentax 645
Angle of View @ Infinity 7.9°
Minimum Focus Distance 9.84' (3.0 m)
Diaphragm Blades 8
Elements/Groups 7/6
Magnification 0.14x
Maximum Reproduction Ratio 1:7.1
Autofocus Yes
Filter Thread 77 mm
Weight 2.76 lb (1.25 kg)
Dimensions Approx. 3.27 x 9.92" (83 x 252 mm)
User Reviews
B h photo.32817553
2 October 2015
10/10

An outstanding lens that is very sharp--and rugged. I was half way around the world doing two weeks of intense shooting when the lens fell front first four feet onto the floor of a bus. It smashed the UV filter and I thought it was done for.

Amazon.32817384
29 November 2016
10/10

I used this lens to shoot acrobats at night during practice. This is not my usual style of photography but I was impressed with how well I was able to acquire focus using this lens and a 645z at night, outside with a few LED lights. Image quality is good, very correctable chroma is visible.

Pentaxforums.34752456
20 May 2015
8.0/10

CA is heavy! its the worst lens i own... I have FA* 24, 28-70, 80-200 and a lot more but this FA* 400 is with quite some distance the worst lens regarding CA i have ever used on the

  • +

    Weight, size, reach on APS-C, Sharpness

  • -

    CA can be terrible, silver finish

Amazon.32817384
15 February 2017
10/10

I'm a fan of the long lens. It's a craft of its own right so be prepared to study it's limits. Love the lens.

Pentaxforums.34752456
19 September 2015
9.0/10

The image quality is very good, also the sharpness. It's not as simple as to produce the 28-45 permanently sharp images.

  • +

    Manual focus, tripod mount, weight, image quality, sharpness

  • -

    Aberrations, image stabilizer No;-)

Pentaxforums.34752456
19 June 2014
9.0/10

I already own the DA* 60-250 and found that I wasn't getting the reach needed to capture birds in flight as well as other wildlife. I found this lens by chance on my local craigslist. At the price paid, I couldn't argue.

  • +

    size, weight, sharpness

  • -

    slow aperture

Pentaxforums.34752456
1 January 2014
9.0/10

As I already owned a FA*600, and a DA*300 I bought this lens for a dedicated mission : an hand-holdable, lightweight lens for travel, birds in flight, and tricky approach of birds, with more reach than the DA*300 and better than a DA300 + a converter. It met 90 % of my expectations.

  • +

    Sharpness stopped down, light and compact

  • -

    CA, autofocus hunts sometimes, price on second hand market

Pentaxforums.34752456
16 April 2013
9.0/10

As a 400mm lens, this is small and hand hold able. It is about the same size as DA*300/4. Image quality is excellent, but DA*300/4 is still a little bit sharper at f/5.6 and if you crop the image from DA*300/4 to the same size as from FA*400, it is difficult to see any difference.

  • +

    Small

  • -

    A little slow at f/5.6

Pentaxforums.34752456
1 March 2013
10/10

The lens is quite light and very sharp when used at high shutter speeds or very secure tripod mount at lower speeds. It doesn't have the build quality of * lens, but the optical quality is in the same league.

  • +

    sharp, light, not expensive

  • -

    not f/4, but then it wouldn't be light

Pentaxforums.34752456
5 November 2011
8.0/10

very light and sharp lens, i hiked with 645d, very good sharp birds photos (only test) . however it is extremely slow compared to new nikon and canon counterparts.

  • +

    light sharp and not very expensive.

  • -

    CA in high contrast, S L O W .. coming from nikon.

Product Highlights
  • Pentax 645 Mount
  • 35mm Equivalent Focal Length: 315mm
  • Aperture Range: f/5.6-45
  • Extra-Low Dispersion (ED) Glass
  • Coatings Protect Lens/Prevent Reflection
  • Quick AF/MF Switching
  • Internal Focusing
  • Rotating Tripod Collar
In The Box
  • Pentax smc FA 645 400mm f/5.6 ED IF Lens
  • Front and Rear Caps
  • Lens Hood
  • Soft Lens Case
  • Limited 1-Year Warranty
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