Sony FE 70-200 f/4 G OSS Lens Review – Part 2

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10 Responses

  1. Viktor,

    this is an excellent test, for sure the best and most useful I’ve read so far about this lens. I’ve added you in my RSS aggregator.

    I don’t think Sony can apply lots of sharpness corrections in pre-RAW phase, but they could do for what concerns CA and vignetting.

    I’ve appreciated in particular the chart tests, as comparisons with competitors are one of the most effective way to value a lens. I do think that sharpness performance may change with the focusing distance, that’s why it makes sense to test both with charts and with far objects (especially for lenses that have a meaning for landscapes). It would be nice if somebody painted a huge ISO chart on the wall of a building, though 🙂

    • Hi Fabrizio and thank you for your kind comment. I am almost sure, that this amount of field curvature in the part where I tried to shot with lens on and slightly off, is caused by optical stabilization. It seems, that when lens gets powered, OSS switch to stand by mode, moving compensation elements in the position from which they start to work once engaged. But when lens is without power, those elements are parked in the off position, causing significant change in the optical path. That’s the most probable reason for such a difference in pure optical performance, because I agree that no recent software would be able to make such a miracle correction (well light field camera like Lytro maybe :-))
      Thanks for reading,

  2. Steve Waldstein says:

    Thanks for a lot of work. Is there a reason you did not compare it directly to the Canon EF 70-200mm f/4L with IS? It would have been interesting since they are closer in price, design, size and weight.

    • Thanks Steve. The only reason is that I don’t have it or any other 70-200 f/4. But I took Canon f/2.8 II rather as a reference lens because it is probably sharpest lens of its kind on the market.

  3. Jerry says:

    I find this review the best I have read. It points out the flaw in using high contrast test charts which are good for taking pictures of high contrast test charts. I like using the grfity as a test object.

  4. Marco says:

    Hello, i like this review. A question, if the oss is on off mode, there are quility issues on the lens, some problem when there is the OSS switch to stand by mode?

  1. September 24, 2014

    […] You can read second part of the review here – […]

  2. October 1, 2014
  3. October 10, 2014

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