I got a PM-1 a year or more ago due to already have a couple of old nikkor prime lenses with aperture rings. I have a lot of success shooting with the wide-angle nikkor and the 135mm telephoto gets some good shots too, although not as clear as the wide. I would consider myself very proficient at manual focusing. I was given a film canon rebel with a 75-300mm telephoto. The aperture isn't adjustable because its a newer AF lens, and shooting closeups of flowers it works ok but trying to take shots at 300mm does not work well. I'm focusing using the VF-3 and the clarity and definition is never any good. Here's an uncropped photo of some ducks shot at 300mm at 1/1000 shutter speed. I think the aperture is 5.6 since the lens is 4-5.6 and is zoomed all the way in. Crop or zoom in a bunch and you'll see that the area around the duck's head, for example, has poor definition and is just hazy. The second photo with the flower is the same canon lens but shot at a shorter distance. It's nice and all but if I want to shoot photos of stuff up close I'll just use one of my other lenses; I need this one to shoot telephoto with for far-away subjects like sports. I don't see any fungus on this lens. Is it my adapter, just a crappy lens, what?