Ricoh Imaging might not have a shiny new mirrorless camera range to focus on like many of its rivals, but that’s allowed it to finesse its existing, much-loved lines, from its Pentax-branded DSLRs through to its GR-series compact cameras.  And now it’s sought to better an older fisheye lens developed for Pentax DSLRs, namely the smc Pentax-DA Fisheye 10-17mm F3.5-4.5ED (IF), which has been transformed into the new HD-Pentax DA Fisheye 10-17mm F3.5-4.5 ED. body .hawk-widget{–trd-blue:#2f6e91;width:100%;letter-spacing:normal;}._hawk.subtitle~.hawk-widget[data-widget-type=price]{margin:16px 0;}@media (min-width:600px){._hawk.subtitle~.hawk-widget[data-widget-type=price]{margin:0;min-height:128px;float:right;clear:none;width:50%;}.fancy_box_body ._hawk.subtitle~.hawk-widget[data-widget-type=price]{float:none;width:100%;}}.icon~.hawk-widget{clear:both;} The new lens differs from its older sibling in two ways. First, Ricoh has applied the same multi-layered HD coatings that feature across its most recent lenses.  These are claimed to help deliver high-contrast images with edge-to-edge sharpness and minimal flare and ghosting, and they’re joined by a Super Prot...