70-200 f4 ?

[sedwards]

Here is another question then. If i have a crop sensor and shooting 300 mm is 1/320 shutter speed my minimum or hould i multiply by 1.6 ? I will post some of my pics tonight when i get home .its mostly when things are far and im at 250+ mm that i find it is not sharp at all. Even in bright sunlight ive tried from f6.3 to f11 and cant see much of an improvement. Im hoping thats the best this lens can do and an L series will give me more sharpness , or maybe ill get lucky and find out im just doing it wrong lol