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ephotozine tests new Panasonic and Olympus lenses

Discussion in 'Native Lenses' started by TonyG, Mar 6, 2016.

  1. hoodlum

    hoodlum Mu-43 Veteran

    212
    Jul 16, 2012
    Toronto Canada
    It looks like ephotozine has updated their 100-400mm review with the results at 300mm.
     
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  2. mcasan

    mcasan Mu-43 All-Pro

    Feb 26, 2014
    Atlanta
    Indeed. As expected the 300 Pro is sharper and more uniform center to edge. The top chart is the PL 100-300 at 300mm. The bottom chart is the 300 Pro at 300mm.

    Both are HUGE improvements over the previous choices in native long glass!!!


    It would interest to compare 300 Pro + TC (420mm) vs the PL100-400 at 400mm.



    PL100400at 300. 300Proat300.
     
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  3. b_rubenstein

    b_rubenstein Mu-43 All-Pro

    Mar 20, 2012
    Melbourne, FL
    It's the PL 100-400.

    Note that the 300 was tested using an E-M5 and the 100-400 testing was done with a GX8. The 300 would generate better numbers with the GX8's 20mp sensor. Those numbers for the 300 look higher than any I've seen for a ยต4/3, 16 mp camera.
     
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  4. MAubrey

    MAubrey Photographer

    Jul 9, 2012
    Bellingham, WA
    Mike Aubrey
    The fact that the centers are basically identical at f/8 suggest that by that aperture both lenses are diffraction limited in the center. Considering the slope of diffraction stopping down past that, I'd got out on a limb and guess that even at f/5.6, the Olympus 300mm is still diffraction limited--across the frame even! That's incredible!
     
  5. JDS

    JDS Mu-43 Regular

    60
    Nov 11, 2014
    San Francisco, CA
    The scales are different, the Oly scale goes to max 3500. So at f8, the Oly is about 500 higher in the center, 750 higher on the edges.
     
  6. tkbslc

    tkbslc Mu-43 Hall of Famer

    While the 300mm is definitely record breaking, The zoom is still in the excellent range for sharpness. I wonder if you'd notice a significant difference in practice?

    Still it definitely looks like the 300mm has plenty of sharpness to handle a TC well and hit 420mm.

    Just as a point of comparison for the 100-400: Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR Review
     
    Last edited: Mar 8, 2016
  7. b_rubenstein

    b_rubenstein Mu-43 All-Pro

    Mar 20, 2012
    Melbourne, FL
    According to Roger Cicala, of Lens Rentals, a 10% difference in resolution is just noticeable. Keep in mind that that's a lab test where camera shake and focus accuracy aren't factors and base ISO of the camera is used. In real world use, those factors typically are greater than the difference in lens resolution.
     
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  8. MAubrey

    MAubrey Photographer

    Jul 9, 2012
    Bellingham, WA
    Mike Aubrey
    I know the scales are different. Look again at the numbers. At f/8 both lenses are at 2500 in the center.

    It's at f/5.6 where the huge difference is, with the Oly hitting about 3100 and the Panny hitting 2500.
     
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  9. JDS

    JDS Mu-43 Regular

    60
    Nov 11, 2014
    San Francisco, CA
    Hey, look at that- it appears I can't read a graph. Not exactly what I intended in responding to your message, my apologies. Regardless, great lenses to choose from.
     
  10. MAubrey

    MAubrey Photographer

    Jul 9, 2012
    Bellingham, WA
    Mike Aubrey
    I've totally done the exact same thing before. No worries!
     
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