Hi Piotr,

just seen your Leitz Telyt review. Since I am a bit hesitant to purchase it: would you mind to share a few 100% crops from images you took with that lense?

You mention it is sharper than SMC 500 4.5. Did you have a side by side comparison? There is another review that states the opposite. SMC 500 is ought to be a tad sharper.

Anyway, thanks for your efforts!

Regards, Kai

Hi Piotr,

just read your review of the Sigma 4/100-300mm EX DG.
You mention: it had large back focus on a K5, impossible to adjust.
I recently purchased one. My combination of K5 and 100-300 has a very repeatable, consistent autofocus. It is good, but not perfect: there is a small back focus. I tried to correct it on the K5, but it seems not to respond to the correction. Is this what you mean with "not possible to correct", or was the back focus of your combination so large that it was beyond the limits of the correction?

kind regards,
Han Schutten.