davholla wrote in post #18142518
In some places in the world camo is a very very bad idea, they might think you are a terrorist!
Actually in a lot of Sub Saharan Africa simply being in possession of military issue clothing, if you are not on active military duty is illegal, especially if you are a foreigner. Even the deliberately not to be used by the military Real Tree products are forbiden. I guess it is to do with the fear of revolution and the use of mercenary fighters in the past in a lot of the countries concerned. I have a friend who hunts out there on a regular basis.
Sometimes it is simply impossible to get any closer to your subject. I shoot airshows, and often find that I have needed to apply an additional 50% crop even when shooting at 600mm to really fill the frame, unless all you want is a direct side on view that mainly captures the underside of the aircraft. For the more interesting angles you end up needing to shoot from much further away, especially since our safety distances have always been much greater than those used in the USA for airshows. If you are restricted by being maybe 5-600 yards from the display line, and you want a 3/4 view of the subject then it is going to be 700 to 850 yards away to get the required angle. If the aircraft only has a 30 to 40 feet wingspan it's not going to be very large in the viewfinder even at 600mm on an APS-C sensor. Attempting to get any closer will have you arrested and charged with some pretty serious offences. I have to say that I have been more than happy with the resulting pictures that I have got from my 50D and Sigma 150-600 C even when cropped by 50%, which means that my original 4752×3168 images get cropped to 3168×2112 pixels, and I'm using an approximately 15×10mm area of sensor. If I could manage the weight of the lens I would love to try a 5DS and 800mm IS for an airshow, I think it could produce some stunning results, the 800 should get me close to 21×14mm of sensor area compared to using the 600mm lens for the same FoV, and the over 2.56× larger sensor allows for a fair degree of zooming out, by reducing the crop where possible.