Immediately received immediately tested ... it is very good ... and does not change the colors ... Tested to ISO 100, f / 2.8, it gives me 0.5 sec. ... No, I was at 1/2500 (sky a little cloudy) ... after calculation, it is right in ... 0.4 sec. being the exact result ... Very good finish and a good overall quality ... objo 77mm cap is offered with ... ;-) Considering the price, I can only recommend ...