So You Wanna See the Difference Between Full Frame and Cropped Sensors?

Discussion in 'Photography Equipment & Products' started by kundalini, Aug 4, 2010.

  1. kundalini

    kundalini Been spending a lot of time on here!

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    Thinking about going full frame, but are confused the difference this 'crop factor' is compared to full frame? Seeing one image of this or that doesn't really resonate? You want / need side-by-side comparisons?

    Do you have an aversion to pink? If not....... carry on. Winston is more than happy to help out if he's in front of the camera.

    This is a v-e-r-y non-scientific lab results test. It was done on a Sunday afternoon, I had nowhere to go, and no chance of driving.......... getting the picture?

    I originally did a two shot of DX versus FX using a 50mm f/1.8 lens (hey.... I shoot Nikon and they're acronyms we know). DX is the cropped body (D300 here) and FX is the full frame body (D700 in this case). My thinking is that most people have or can obtain a 50mm focal length. A discussiion elsewhere brought up the 35mm vs 50mm debate as well. This made sense and I did a reshoot..... on a Sunday afternoon, I had nowhere to go, and no chance of driving.......... getting the picture?

    The setup is:
    Lenses: Nikkor 35mm f/2 and Nikkor 50mm f/1.8
    Camera to subject = 28" (except as noted)
    Subject to background = 60"
    F/5.6
    1/250s
    ISO200
    EV = -.0.7
    Shot at ~15:30, conditions were bright sun to sun behind thick clouds, black cover used on diffuser to block sun
    Flash at 45° camera left in 24" soft box at 45° above, flash at 135° camera right with 8" snoot feathered to hit the very back of his head ~24" above.

    I also used a CPL but may not have turned it exactly the same between lens changes.


    ....................................DX 35mm.....................................................................FX F5mm...........................
    [​IMG] [​IMG]




    ....................................DX 50mm.....................................................................FX 50mm...........................
    [​IMG] [​IMG]


    Here's what you paid admission for..............


    ....................................DX 35mm.....................................................................FX 50mm...........................
    [​IMG] [​IMG]



    ....................................DX 35mm..................................FX 35mm (recomposed for 16" camera to subject).....
    [​IMG] [​IMG]



    Now I'm getting confused.................. See if this helps. I shot some other stuff with thesae combos. The dots are starting to get difficult to connect.
     
    Last edited: Aug 5, 2010
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  2. Derrel

    Derrel Mr. Rain Cloud

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    Excellent work for a Sunday afternoon, with nowhere to go, and no chance of driving..........

    Super post!
     
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  3. MrBarney

    MrBarney TPF Noob!

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    Very nice, although I expected the results you show for 1 and 2 (differing subject sizes) and 4 (more perspective distortion due to FOV change). It's #3 that I'm spending the time peering at.

    I *think* that the bush behind Winston (?!) is thrown more out of focus with FX. Of course, it might be my eyes! Can anyone confirm this? Is there anything else I'm missing.
     
  4. Robin Usagani

    Robin Usagani Been spending a lot of time on here!

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    nice job!
     
  5. supraman215

    supraman215 TPF Noob!

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    The 2 photos after "Here's what you paid admission for......" are exactly what I was looking for. They illustrate the difference in the quality, you can see in his bow. I also see the difference between 50 and 52mm. 35*1.6=52

    THANKS!
     
  6. kundalini

    kundalini Been spending a lot of time on here!

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    Thought you might also like to see how each sensor handles the out of focus background. The physical size of each pixel (not just the sensor) is larger for a full frame. I would expect better performance.

    The DX images are at 100% crop. In order to get a similar framed size, I had to go to 150% on the FX images. Even more pixel peeping. :biggrin:



    .......................................DX 35mm......................................................
    [​IMG]



    .......................................FX 35mm......................................................
    [​IMG]








    .......................................DX 50mm......................................................
    [​IMG]



    .......................................FX 50mm......................................................
    [​IMG]




    I thnk it's proven that the bokeh is much better handeled by a full frame sensor.​
     
    Last edited: Jun 20, 2011
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  7. shmne

    shmne No longer a newbie, moving up!

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    Now that is what I wanted to see! Close up goodness.

    It is amazing how much better a full frame sensor with better pixels can capture an image as opposed to the crop frame. This just furthers my drive to purchase a full frame and some L series glass
     
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  8. Steve01

    Steve01 TPF Noob!

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    :thumbup: Nice explanation and presentation.
     
  9. arios23

    arios23 TPF Noob!

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    BRAVO, BRAVO!!
     
  10. Markw

    Markw No longer a newbie, moving up!

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    I dont mean to pull this out of the dust, but I think it deserves another look-through by most and I cant see the second post worth of photos! :er:

    Mark
     
  11. Higgs Boson

    Higgs Boson TPF Noob!

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    This seals it for me, my next body will be a 5DM(III?) and not a 7D as long as it gets the good AF, etc....

    Great thread.
     
  12. 2WheelPhoto

    2WheelPhoto TPF Noob!

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    Wow @ the FF performance.
     

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