alberto's reviews

  • Nikon 50mm f/1.8D AF Nikkor

    8 out of 10 points and recommended
    Large aperture,compact, cheap
    none

    Very cheap lens, with good optical quality.

    Lightweight, very large aperture, one of my favourite lens.

    I use this lens whit film and digital bodies and the ony drawback is a little bit soft(and lowered contrast) wide open, but good from 2.8 to 4, and very sharp from 4 to 16, then diffraction may degrade the image.

    very good for portrait with digital bodies.

    reviewed January 14th, 2007 (purchased for $100)

  • Sigma 24-70mm f/2.8 EX DG Macro

    7 out of 10 points and recommended
    large aperture, cheap
    soft wide open

    i bought this lens(nikon mount) used and it works very well.

    On digital bodies the focal range is very interesting, and whit 3 zoom lens(12-24, 24-70,70-200) you can have everything you need.

    Mine is a little soft wide open(but still usable) with increasing sharpness stopped down.

    Anyway, colors are better with nikon lenses.

    reviewed January 14th, 2007 (purchased for $250)

  • Sigma 28-300mm f/3.5-6.3 DG Macro

    6 out of 10 points and recommended
    good walk around lens
    not very sharp

    when i want a lightweight all-around lens i use this.

    Mine works fine(not very sharp and contrasty, but still usable) from the wide end untill 200mm, then sharpness decline and it's very hard to use.

    I use it only with digital bodies because on full format borders are very soft.

    reviewed January 14th, 2007 (purchased for $150)

  • Nikon 18-55mm f/3.5-5.6G ED DX AF-S Nikkor

    6 out of 10 points and recommended
    optical qualiti stopped down, zoom range
    built quality

    Very cheap lens with good optical quality.

    Wide open this lens isn't a stellar performer but in good light situations(or high iso settings) is very sharp.
    Color rendition is good.
    Some CA at the wide end.

    reviewed January 15th, 2007 (purchased for $100)

  • Nikon 28-100mm f/3.5-5.6G AF Nikkor

    4 out of 10 points and recommended
    none
    buit quality, optical quality

    Very bad lens.

    optical quality is very bad, soft at all apertures.

    Good zoom range, but you can print only 10x15cm.

    reviewed January 15th, 2007 (purchased for $100)

  • Nikon 80-200mm f/2.8D ED AF Nikkor

    8 out of 10 points and recommended
    2.8 costant, colors, sharp
    expensive

    Very good lens.

    Built like a thank, heavy(maybe too much)

    Sharp at all apertures, increasing stopping down untill f8.

    Little amount of vignetting wide open(still usable).

    CA very well controlled.

    reviewed January 15th, 2007 (purchased for $600)

  • Sigma 15-30mm f/3.5-4.5 EX DG Aspherical

    7 out of 10 points and recommended
    Wide angle on aps sensor, sharp
    Flare and ghoting, distortion

    This lens works fine on a digital body.

    Sharpness is overall good, but is better to stop down a little(at least 1 stop).

    Distortion is visible in most situations, but easy correctable with software.

    The major drawback is flare and ghosting with evrery light source.

    reviewed January 15th, 2007 (purchased for $250)

  • Sigma 28-70mm f/2.8-4

    4 out of 10 points and recommended
    none
    built quality, optical quality

    Ok it's a cheap lens.You get what you pay for.

    Built quality is very bad.

    A lot of problems with flare and ghosting, CA on a high level, barrel distortion at the wide end, light falloff wide open (untill f11), sharp only stopped down 2 stop.

    reviewed January 15th, 2007 (purchased for $80)