Измерительная информация считывается с информационного табло. В зависимости от измеряемых газов и паров в газоанализаторе используются датчики: электрохимические, термокаталитические, полупроводниковые, оптические. Below is an sample photo I took using the SD Quattro and the 30mm f/1.4 DC ART kit lens. Between the ‘big names’ Olympus and Panasonic, and third-party contributors like Sigma, Tamron, Samyang, Voigtländer, Tokina and Kowa, there are now about 55 dedicated lenses available for Micro Four Thirds cameras. Box, Sigma 35mm f/1.4 DG HSM. enlarge. In this box sits the lens inside a plastic bag which sits with the hood inside the case.
The camera menus are quite responsive, and while there are a few minor things I think can be better arranged, overall, the menu layout isn’t too bad at all.The camera responses quickly when you are going through the menus. Для анализа смесей в газоанализаторе используется термохимический датчик. Never buy at retail since Sigma does not seal their packages, and you’ll never know who has monkeyed with your lens before you bought it. The top is where you’ll find certain exposure controls and the shutter release in addition to power buttons and such. Optical construction consists of 8 elements, three of which are aspherical, in 6 groups.
Depth-of-Field Scale Two tiny ticks for f/16 and that’s it; this doesn’t really count. While I understand that their unified design makes a powerful indicator that these triplets are part of a set, it’s hard to tell them apart. It didn’t help that the paint of the 60mm became just scuffed enough that the 6 is hard to read. With no rubber grips or coatings these lenses are constantly cold to the touch, and their smooth finish doesn’t leave us too much to hold on to.