YLovePhoto

Category: Sigma accessories & lenses

  • A fish-eye lens at rock-bottom price

    When you use an expensive SLR camera you are often tempted to purchase a specialty lens like a ultra-wide angle (fish eye) lens. But, apart from the rare occasions when you really need it, it’s too expensive for you and me. Why not build it yourself? Instructables does the demonstration with a Nikon D90, but…

  • Focal length and photo lenses

    Tamron rewrote its web site. This was the occasion to move the Lens Comparison Tool but it is still useful to compare a 400mm with a 500mm (or a 35mm with a 50mm). But you can also find a similar tool at Olympus (and it takes into account the specificities of 4/3 sensor format, of…

  • Monster zoom in test

    Juza has tested the biggest Sigma tele-zoom lens: Sigma 200-500mm F2.8 EX DG. If it seems to be quite good, it is both horrendously expensive and nearly impossible to lift:

  • All lens tests are wrong

    I recommend reading a nice little post titled “All lens tests are wrong” that concludes that the only good test for a lens is to use it during a full year. Not wrong, but I still recommend to also check my list of web sites with photo lens reviews.

  • Focal Length Comparison

    Thanks to Tamron, it is possible to easily compare photo lenses of different focal length and their effect on the size of an image. Tamron focal length comparison

  • Comparison of 80-200mm zooms

    DPreview has a good comparison of 4 zoom lenses opening at f/2.8 for SLR cameras: Canon 70-200mm F2.8 L IS USM Nikon AF-S VR 70-200mm F2.8 G Sigma 70-200mm 1:2.8 EX DG Apo Macro HSM II Tamron 70-200mm 1:2.8 Di LD (IF) Macro Since they are one of the most coveted segment of the SLR…

  • Web sites for lens reviews

    It is often difficult to group lens reviews in order to compare/evaluate a little more than their mere physical characteristics (focal length, aperture/diaphragm, or even number of individual lenses). But how would you evaluate/review optical quality? When I see the really impressive differences between two lenses, I would be prepared to judge from their price,…