is there really a big diffrence between f/1.4 and f/1.8

Discussion in 'Photography Equipment & Products' started by just x joey, Jul 2, 2007.

  1. just x joey

    just x joey TPF Noob!

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    i have the 50mm f/1.8, and im thinking about trading it in to get the 1.4. is this a good idea? the 1.8 seems a little soft in the lower f/stops. also whats the big differences between the 85mm 1.8 and 1.4? im talking about nikon btw.
     
  2. jstuedle

    jstuedle No longer a newbie, moving up!

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    The big difference between the 50 1.8 and 1.4 in my opinion is build quality. The 1.8 should be sharp enough, so the issue of it being a little soft surprises me. But it is made in China. The 1.4 is Japanese the last time I checked and is considered to be a better constructed lens. The 85 1.4 is said to be sharper than the 1.8. The extra 1/2 stop helps focus sharply in low light also. I have the old MF f/2.0 version. It is said to be optically identical to the 1.8 and it is a pretty good lens.
     
  3. just x joey

    just x joey TPF Noob!

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    thanks, il probably return my 1.8 on thursday and get the 1.4 50mm.
     
  4. fmw

    fmw No longer a newbie, moving up!

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    The difference optically is 2/3 f stop. The difference mechanically is very significant. The 1.8 is a Chinese made lens with a plastic focusing mechanism. It won't last as long and has a signficantly greater chance of getting misaligned over time.
     

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