Vrftjkry

I am having troubles positioning 7 images: I need to have a big one on the left side, and 6 smaller on the right, each one of them with a different caption, and a big caption below all of them.

It has all to have the same height, and must not change aspect ratio of the images. The big one must be 5cm*5cm, the others the remaining space.
It is a big images, with 6 small details on the side, with captions used as a reference to where to look (single letter or number)

I tried different solutions, but none was what I needed. The closest I got to what I need was using the following code:

usepackage{graphicx}

usepackage{geometry}

geometry{

  top=20mm,            

  inner=20mm,

  outer=20mm,

  bottom=20mm,

  headheight=3ex,       

  headsep=3ex,          

}

usepackage[export]{adjustbox}

begin{document}

{centering

begin{table}[ht]

begin{tabular}{p{7cm}p{12cm}}



cline{1-2}

 & \

includegraphics[max width=5cm, max height=5cm]{example-image-a} 

caption{image 1} & begin{tabular}[l]{@{}l@{}}

includegraphics[max width=2cm, max height=2cm]{example-image-b} 

includegraphics[max width=2cm, max height=2cm]{example-image-b} 

includegraphics[max width=2cm, max height=2cm]{example-image-b} \

includegraphics[max width=2cm, max height=2cm]{example-image-b} 

includegraphics[max width=2cm, max height=2cm]{example-image-b} 

includegraphics[max width=2cm, max height=2cm]{example-image-b} 

end{tabular} 

 & \



end{tabular}

end{table}

end{document}

But it is not aligned, nor occupying all the page width. And I can not add the caption I need.

About the small captions, I need just to put a reference number to look in the big image so if it is possible to overlay in one corner a small number, is even better.

Thank you for your help

something like this?

above images preserve their aspect ratio.

documentclass{article}

usepackage{geometry}

geometry{margin=20mm,

  headheight=3ex,

  headsep=3ex,

}

usepackage{array}

usepackage[export]{adjustbox}

usepackage{subfig}



begin{document}

{centering

begin{table}[ht]

begin{tabular}{m{dimexpr5cm+3tabcolsep}l}

includegraphics[width=5cm]{example-image-a}

caption{image 1} 

    &   setkeys{Gin}{width=2cm}

        subfloat[label{subfig:a}]{includegraphics{example-image-b}}

        subfloat[label{subfig:b}]{includegraphics{example-image-b}}

        subfloat[label{subfig:c}]{includegraphics{example-image-b}}

        subfloat[label{subfig:d}]{includegraphics{example-image-b}}

        subfloat[label{subfig:e}]{includegraphics{example-image-b}}

        subfloat[label{subfig:f}]{includegraphics{example-image-b}}

end{tabular}

end{table}

end{document}

edit:
your question is not clear. from your comment can be concluded that actually you looking for the following:

but i'm not sure in this

documentclass{article}

usepackage{geometry}

geometry{margin=20mm,

  headheight=3ex,

  headsep=3ex,

}

usepackage{array, multirow}

usepackage[export]{adjustbox}

usepackage{subfig}



begin{document}

    begin{table}[htb]

centering

setkeys{Gin}{width=2cm}

    subfloat[label{subfig:a}]{includegraphics{example-image-b}}

    subfloat[label{subfig:b}]{includegraphics{example-image-b}}

    subfloat[label{subfig:c}]{includegraphics{example-image-b}}\[1ex]



includegraphics[width=5cm]{example-image-a}

                caption{image 1}



    subfloat[label{subfig:d}]{includegraphics{example-image-b}}

    subfloat[label{subfig:e}]{includegraphics{example-image-b}}

    subfloat[label{subfig:f}]{includegraphics{example-image-b}}

    end{table}

end{document}

edit (2):
in third try ... hopefully now i is what you like to obtain:

documentclass{article}

usepackage{geometry}

geometry{margin=20mm,

  headheight=3ex,

  headsep=3ex,

}

usepackage{array, multirow}

usepackage[export]{adjustbox}

usepackage{subfig}



begin{document}

{centering

begin{table}[ht]

    centering

begin{tabular}{p{dimexpr5cm+3tabcolsep}l}

multirow[t]{2}{=}[-4.4mm]{includegraphics[width=5cm,valign=c]{example-image-a}

                caption{image 1}

                }

    &   setkeys{Gin}{width=2cm}

        subfloat[label{subfig:a}]{includegraphics{example-image-b}}

        subfloat[label{subfig:b}]{includegraphics{example-image-b}}

        subfloat[label{subfig:c}]{includegraphics{example-image-b}}  \

    &   setkeys{Gin}{width=2cm}

        subfloat[label{subfig:d}]{includegraphics{example-image-b}}

        subfloat[label{subfig:e}]{includegraphics{example-image-b}}

        subfloat[label{subfig:f}]{includegraphics{example-image-b}}

end{tabular}

end{table}

end{document}