On Friday,  9 Oct 2015 at 09:25, Enzo Chi wrote:
> I tried that "\begin{align}...\end{align}" code with "C-c C-x C-l", it
> 	generate a very back quality image like this:

What settings do you have for image creation in org?  What is
org-latex-create-formula-image-program?  

For instance, I have the following settings:

#+begin_src emacs-lisp :results none
  (setq org-format-latex-options '(:foreground "white" :background "black" :scale 3 :html-foreground "Black" :html-background "Transparent" :html-scale 1.0 :matchers ("begin" "$1" "$" "$$" "\\(" "\\["))
        org-latex-create-formula-image-program 'imagemagick
        )
#+end_src

and I get something along these lines: