## 2 Materials and Methods
### Light-Shaping Attachments  
We have included 30 different combinations of light sources and light-shaping attachments in the study. We have selected three types of light modifiers: snoot, beauty dish, and softbox, which we differentiate according to their purpose, shape, and material surface properties. Figure 2 illustrates selected types of light modifiers, while Table 2 shows an overview of their component combinations. The first modifier is an _Ellichrom Snoot Reflector_, which was tested in two combinations--with and without an additional grid with blades at 15\({}^{\circ}\). The second light-shaping attachment is a beauty dish in seven combinations. Each combination consisted of the main _Ellichrom Sofflite Silver Beauty Dish Reflector_ (70 cm \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Label** & **Type** & **Component Combination** & **Manufacturer** \\ \hline SN & snoot & snoot & Elinchrom \\ SN\_G & snoot & snoot, grid & Elinchrom \\ BD\_R & beauty dish & reflector & Elinchrom \\ BD\_R\_DG & beauty dish & reflector, gold deflector & Elinchrom \\ BD\_R\_DS & beauty dish & reflector, silver deflector & Elinchrom \\ BD\_R\_DW & beauty dish & reflector, white deflector & Elinchrom \\ BD\_R\_DC\_G & beauty dish & reflector, gold deflector, grid & Elinchrom \\ BD\_R\_DS\_G & beauty dish & reflector, silver deflector, grid & Elinchrom \\ BD\_R\_DW\_G & beauty dish & reflector, white deflector, grid & Elinchrom \\ OB\_B & indirect octabox, big & box & Elinchrom \\ OB\_B\_C & indirect octabox, big & box, cover & Elinchrom \\ OS\_B & direct octabox, small & box & Elinchrom \\ OS\_B\_C & direct octabox, small & box, cover & Elinchrom \\ SS\_B & square softbox, small & box & Elinchrom \\ SS\_B\_C & square softbox, small & box, cover & Elinchrom \\ SB\_B & square softbox, big & box & Elinchrom \\ SB\_B\_L & square softbox, big & box, liner & Elinchrom \\ SB\_B\_L\_G & square softbox, big & box, liner, grid & Elinchrom \\ SB\_B\_C & square softbox, big & box, cover & Elinchrom \\ SB\_B\_L\_C & square softbox, big & box, liner, cover & Elinchrom \\ SB\_B\_L\_C\_G & square softbox, big & box, liner, cover, grid & Elinchrom \\ SH\_B & stripbox, horizontal & box & Quadralite \\ SH\_B\_L & stripbox, horizontal & box, liner & Quadralite \\ SH\_B\_C & stripbox, horizontal & box, cover & Quadralite \\ SH\_B\_L\_C & stripbox, horizontal & box, liner, cover & Quadralite \\ SV\_B & stripbox, vertical & box & Quadralite \\ SV\_B\_L & stripbox, vertical & box, liner & Quadralite \\ SV\_B\_C & stripbox, vertical & box, cover & Quadralite \\ SV\_B\_L\_C & stripbox, vertical & box, liner, cover & Quadralite \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Light-shaping attachments and tested combinations. Figure 2: Three types of tested light-shaping attachments: (**a**) snoot, (**b**) beauty dish, and (**c**) softboxes (octabox, softbox, stripbox). diameter). A gold, a silver, and a white deflector from the _Elinchrom Deflector Kit_ were attached individually and tested with or without an additional _Elinchrom Sofflite Beauty Dish Grid_ (70 cm diameter). The third type of light-shaping attachment tested are softboxes, which differ in size, shape, and manufacturer. Most of them are manufactured by Elinchrom, which gives us the opportunity to exclude the influence of the variety of materials. We tested the _Elinchrom Indirect Liemotiv Octa Softbox_ (190 cm diameter), the only softbox with an indirect lighting mechanism. An octagonal shape can be found in the _Elinchrom Portalite Octa Softbox_ (56 cm diameter), but with direct lighting. Both were tested in two combinations. The first was the reflective box, and the second was the box with the addition of a white cover. We tested two square softboxes: _Elinchrom Portalite Softbox_ (40 \(\times\) 40 cm) and _Rotalux Square Softbox_ (100 \(\times\) 100 cm). Both were tested in the primary combination with only the reflective box and with the cover attached.