I think I may never see my dream of owning a 500L unless I win a lottery. I ran across a few images at Fred Miranda with the 300 and a 2X converter. This combo produced some decent sharp images.
Financially I'm closer to the 300 than the 500. The 300 and 2X will give me 600m and AF. Without the 2x now I have a fast lens. A little more versatile.
I know the 500 is a very sharp lens and so is the 300 but will the 2X will noticeably degrade it? The person at FM stated this is one of the few lenses that can really handle the 2X converter well.
I have a 300L F4 IS. A fine lens but will do as well with the 2X I don't IQ wise and I will lose AF. My 1.4 works well on it.
I tried a few moon shots with my 300L and two 1.4X converters (588mm). Did OK but just could not crop enough for a crisp lunar surface. With a 300 + 2X + 1.4X gets me to 840. Again a 500 would do better but the extra 252mm with 2X + 1.4X Should help.
Just looking for some feedback on my train of thought. Will I be disappointed with the IQ using the 2X? Without that factor I could not justify the purchase. Thanks in advance.