Impressions & Notes
- Lens is very much hand-holdable
- This lens has internal focusing that does not extend and retract upon focusing
- I have not tried Pentax-F 1.7x AFA with the lens, I suspect it will work well together though I think I need extremely good lighting for AF to work
- Focusing ring is shorter than I expected, it is between 1/4 to 1/2 turn
- Focusing ring is well dampened but I would prefer a longer focus throw for precision
- Minimal focusing distance is 4 meters
- Filter Size is 72mm
- SD glass works better with PF/CA
- My copy comes with auto aperture which is great, this make it quicker with one less step for stop-down metering
- Test photos quite sharp in f/8.0 and f/7.1
- Will test wide open shots, I would imagine a touch soft
- I attempted BIF shots with the lens but I am too slow to put the birds in frame
- The tripod ring has a separate base, when mounted, it bothers hand-holding.
- This is a welcome addition to my tele-lens for birds
- This is a value lens to be considered
Related:
- Pentax K-x and Tokina SD 400mm On Bird
- Pentax F* 300mm f/4.5 Initial Test Shots
- Photosniper Tair-3 PhS 300mm f/4.5
- Pentax-F 1.7x AF TC
- Tamron Pz-AF 1.4x AF TC
- Pentax 300mm f/4.0
- Search of 400mm prime in Pentax
- Hin's Camera Gear
2 comments:
I also have this lens, Hin. My experience matches yours on every point.
I have tried it with the Pentax AF 1.7x TC and results have been so-so. Bright light is needed for proper AF function.
Miserere is right. I haven't tried the Pentax autofocus converter. It's a bit soft wide open. It's too bad you can't get them anyone except at eBay or a camera store with used equipment.
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