thubleau's reviews

  • Sony 18-250mm f/3.5-6.3 DT SAL-18250

    8 out of 10 points and recommended
    excellent lens on the right body
    non so far

    Another misleading test review..........when will reviewers ever learn that using lenses such as the 18-250 become totally irrelevant once you use this on abody that can do it justice.
    For instance try this lens on say the Sony a57 and you will see the results are quite difference
    Most modern cameras use lens profiling, unbelievable processors and great Apc size sensors which all play a major roll in the final results of just another ordinary lens.
    Thats correct, they remove distortion,pin cushioning, ghosting and even abberations so what happens is this.
    You pay a lot less for a cheap lens and get amazing results.
    I tested this lens against highly rated L enses including the 17-40 24-105 and the 70-200 all on my full frame sensored 5D MK2 and the results were so close that i realised it is a total waste of money buying expensive glass for APC-S SENSORED CAMERAS.
    There is only a limited amount of resolution that can be extracted from these small sensors..........its not alimitless exercise as once you reach a certain point it becomes impossible for the sensor and the lens to extract anymore resolution.
    Camera bodies carry out a very important part in this process with the latest bodies even building resolution beyond the actual physical capabilities of the lens.
    This is of particular importance if you have no need for apertures lower than f/4

    as historically it is the lenses at this f stop that are cheapest to buy.

    With higher iso performance in modern day cameras its just not necessary to buy lenses of supposed technical superiority when you print up to 8X10 as you will not see any difference.

    reviewed June 23rd, 2012 (purchased for $575)

  • Canon EF 17-40mm f/4L USM

    1 out of 10 points and not recommended
    non beware review strapped to an apc sensor
    very high distortion at 17mm end overpriced and heavy

    I query some of these reviews because they are not accurate.
    Lets look at the 17-40 l.

    I shot a wedding using this lens ona full frame 5D MK2.

    when i viewed the results on my computer all the group shots were so bad at The 17mm they were unuseable distortion was horrific.

    OK so I know someone is going to say you shouldn't use a lens like this for group shots but my point is using this onan apc sensor is not going to give users an accurate assesment of this lens and the quality of the glass is also wasted on small apc size sensor cameras as I have compared L lens results versus normal glass on an apc size sensor and quite honestly you are wasting your money as there is no visible difference.

    reviewed June 23rd, 2012 (purchased for $800)