A ring has two size markings in millimeter such as 28mm-37mm, 49mm-52mm, 77mm-72mm and so on. The first number is the size of the thread that is closer to the camera lens (i.e. , the male thread), while the second is the size of the thread of the farther end (i.e. , the female thread). Therefore, a step-up ring with marking 43mm-49mm means the male and female thread sizes are 43mm and 49mm, respectively.
Some forms of ordination analysis, classical or canonical, are widely used by palaeolimnologists. as tools in the handling, summarisation, and interpretation of palaeolimnological data, either modern assemblages or. core fossil assemblages.
Chapter 1 Theoretical Introduction â  Factor analysis is a collection of methods used to examine how underlying constructs inÂ°uence theresponses on a number of measured variables. â  There are basically two types of factor analysis: exploratory and conï¬rmatory.â Exploratory factor analysis (EFA) attempts to discover the nature of the constructs inÂ°uencinga set of responses. â Conï¬rmatory factor analysis (CFA) tests whether a speciï¬ed set of constructs is inÂ°uencing re-sponses in a predicted way..3 Factor Analysis vs. Principal Component Analysis â  Exploratory factor analysis is often confused with principal component analysis (PCA), a similarstatistical procedure. However, there are signiï¬cant diï¬erences between the two: EFA and PCAwill provide somewhat diï¬erent results when applied to the same data.