---------------------- ASA? >I tried to take pictures from slides using ISO 100 negative film >with my F90-X and AF-D 105 mm micro-Nikkor >set at f /2.8 aperture and matrix metering exposure mode. >I used a home-made apparatus with a well diffused light source. >I got catastrophic results! >I took 20 pictures. I got just 2 properly exposed! >The others resulted in extreme overexposure. >It seems I should set - 3.0 EV to get them properly exposed. >The subjects in the pictures are not so dark nor so light. So, I didn’t >use exposure compensation in any picture. >Why did the sensors fail to calculate the correct exposure with >transmitted light through the object? Has it to do with the contrast? >When I take normal pictures (reflected light) the matrix metering >works well, even at reproduction ratio 1:1. Was the ASA/ISO correctly set? ----------------------------- 400MM >But, is the $3,000 more than its 300mm sister worth it. Now, I realize that you gain 100mm in focal length, but if one was going to buy along lens, is it really worth it? I am really looking for some insight here. I wish I had waited for the 400/2.8, when the price gets real I will sell my 300AFS for it. >Also, I am aware that the E series teleconverters are compatible with the long AFS lenses. Any comments on how well they work on the 300/400 AFS lenses. AF Speed? Sharpness? Overall quality? The speed is slower, but when I use the TCs on my 80-200AFS it has the same AF speed. Robert in Redlands
