With developing technology, various types of stimulus provide a widely of representations to the landscape aesthetic studies which usually elicited the color slide or photo as a stimulus. Additionally, the empirical result that indicated a strong relationship has been found between responses to color slides and responses to places in situ. Many studies have use color photo to be stimuli but they have different procedures, for example one of studies that asked the participants rated on only one variable after they watched photos. But, on the other study that emphasized people should rating all variables when they watched photo. Hence, we hypothesize these different procedures could affect study result, moreover, that related with discussions. To understand sequence of both procedures, so this study purpose was to compare two different procedures of study. Furthermore, it clarifies the results of inference on the research of landscape preference. There were sixty photos selected as stimuli of two studies. In Study 1, we separated sixty photos into ten sets, each set contains six photos. 200 participants were collected who watched a set of photos then rated on nine variables: environmental information (openness, naturalness, complexity, and mystery), perceptual level (visual and locomotive access), preference, danger, and fear. On the contrast, the sixty photos also were selected in study 2. 184 participants only rated on one variable after watched sixty photos. The results showed that there were significances among environmental information, perceptual level, preference, danger, and fear in both study. According to the results that obtained three considerations for future study, first, procedure design is a key factor during survey, it might influence whole result to success or not. Second, analysis unit, whether use photo or people as a sample that can affect total sample size and analysis techniques decision. Finally, the explanation of study should put the setting as subject if analysis unit is setting. Although the present of study is reconsideration for method design, however, it will provide recommendations for future study on landscape aesthetics.