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Pentax smc FA 250-600 mm f/5.6 DE (IF)

Pictures:
Specifications:
Manufacturer Pentax
Model smc FA 250-600 mm f/5.6 DE (IF)
Lens style Telephoto zoom
Focal length 250 - 600 mm
Maximum aperture f/5.6
Angle of view 9.9 - 4.1 o
Closest focusing distance 3.5 m
Maximum magnification 1:5
Minimum aperture 32
Number of diaphragm blades 0
Auto focus type AF
Lens Construction 18 elements / 16 groups
Filter diameter 43 mm
Macro No
Available mounts Pentax K
Dimensions 135 x 442 mm
Weight 5050 g
Additional information
Average rating (1 owners reviews)
Build quality
Optical quality
Value for money

Overall

5.00 Excellent
Owners reviews (1)
  1. Marc Langille
    Marc Langille 25 September 2025, 00:08
    Build quality
    Optical quality
    Value for money

    Overall

    IP 72.192.x.x
    Owner since: more than 10 years
    Price: 2900
    User profile: Semipro

    Cons: Heavy. Requires gimbal head and tripod for best results.

    Pros: Optically sharp throughout the FL range, even wide open at F/5.6

    Summary: Brilliant, even on digital: I highly doubt I will ever part with this lens. The FA* 250-600/5.6 is definitely better than the Sigma 500/4.5 EX DG APO lens I used. This heavier lens - like any larger super telephoto - requires top shelf tripod and gimbal head to bring out the best images. I have a Gitzo GT3541XLS, Wimberley WH-200 gimbal head and Wimberley P-50 lens plate - three screws hold the almost 7\" long plate to the tripod collar foot. I\'ve not really tried it on a monopod yet, but I now have a Wimberley C-10 QR clamp to mount on my monopod so I am looking forward to seeing it in action. It\'s a fantastic lens. This is by far the better lens of choice and the MFD kicks the competition around by a good margin. Most 600/4 lenses start at 15.5 feet and go up - that\'s the lowest in class of any 600mm - next 600mm is 15 feet - great for shooting in a blind/hide. Only Nikon\'s newest 600/4 is on par with the FA* 600/4 in that aspect. Having a max. aperture of F/5.6 is but a small trade off for it\'s flexibility. When the light is getting that low, it\'s becoming a compromise anyway. All wrapped up into a unique FL zoom. What\'s astounding is that the FA* 250-600/5.6 is unbelievably sharp even wide open throughout the entire FL range. The proof is in the images I have taken with it. If it\'s a tad soft at 600mm wide open, then that is an issue with the photographer\'s technique, nothing more. This is another example of the pinnacle of Pentax optical engineering mastery.