Quantaray 400mm f/6.3 Test Shots/Review

2009-07-27
quantaray 400mm f/6.3 Test shots with Pentax K20D

quantaray 400mm f/6.3 Test shots with Pentax K20D

quantaray 400mm f/6.3 Test shots with Pentax K20DI get this 400mm old prime along with interesting tower flashes that I want to try out. I got a Sunpak Auto Thyristor 522 andd Metz 60 c-1 that are flash with a tower bracket. The lens are not what I am after. I thought it would be another lens that would weight over three pounds. This 400mm is the lightest in all the 300mm and 400mm lens that I have handled. Now that I think of it, it may be too light. Anyway, I tried it out in a lunch break. Handling is not too bad especially in the ease of focusing. Purple fringing can easily be seen unfortunately. My copy comes in a T-mount that is currently comes with an adapter to K mount


Initial Test Shots

quantaray 400mm f/6.3 Test shots with Pentax K20D

quantaray 400mm f/6.3 Test shots with Pentax K20Dbokeh is not too bad


quantaray 400mm f/6.3 Test shots with Pentax K20Dquite easy to obtain focus


quantaray 400mm f/6.3 Test shots with Pentax K20Dbut easy to get focus errors due to
lost of focus trap in K-mount



quantaray 400mm f/6.3 Test shots with Pentax K20DI wish I can have 1/2 sec more to nail the focus

quantaray 400mm f/6.3 Test shots with Pentax K20D

quantaray 400mm f/6.3 Test shots with Pentax K20D

quantaray 400mm f/6.3 Test shots with Pentax K20D

Initial Impressions & Notes
  • This 400mm is the lightest that I have handled. Though long in length, weight is not an issue for hand-holding.
  • It comes with a adjustable tripod collar. I have not tried if I can remove the collar for hand-holding
  • Bokeh is not too bad
  • Easy to handle
  • It has a preset ring with C <----> O with letter C for closing aperture down while O refers to opening of the aperture blades to wide open
  • I find focusing achievable in f/8.0 in good lighting without the need to switch to 'C' in preset ring. With some previous encounter with M42 tele-lens, that is not the case as I always need to focus in wider apertures as in f/5.6 to f/2.8.
  • Purple Fringing is easily seen in the test pictures.
  • Lost of focus trap will take some time to get used to
  • Stop down metering is required like other K-mount manual lens.


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1 comments:

Bill Putnam Photo said...

Hi, what's the front filter size? Cheers.

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