Sigma Corp Of America（シグマ）さんのインスタグラム写真 - (Sigma Corp Of America（シグマ）Instagram)「SIGMA Ambassador @jim_koepnick strikes again, turning a raggedy patch of roadside grass into a work of art! In his words: "Driving around on country roads last night with the '800'... the Sigma 100-400 DG DN L-mount lens with the new Sigma 2X teleconverter (equaling 800mm of pure fun). While I'm not usually one to use a teleconverter, the new Sigma L mount converters are changing my mind -- all photos are tack sharp while giving me a lot more creative options. One example was these backlit weeds on 9th Avenue which caught my eye in the fading sunlight. ISO 3200; f13 at 1/1250 second. I know I usually get questions about why I use a high ISO for a shot like this -- for me the answer is twofold... the Sigma fp handles high ISO like a champ... and with the 2X teleconverter giving me an f-stop of 13 as well as a pretty good wind blowing, I needed a high shutter speed to freeze the blowing weeds." #sigmaphoto #SIGMA #sigmafp #sigma100400 #sigma100400mm #sigma100400mmdgdn #backlight #backlighting #photography #telephoto #telephotolens #supertelephoto #ultratelephoto #ludicroustelephoto」8月28日 0時45分