
My garden is beginning to come alive, with flowers and insects and would you not know it...I have to leave Sunday for Utah

Moderators: rjlittlefield, ChrisR, Chris S., Pau
The aperture that Sue's camera calls "f/13", might be close to what Dave's camera would call "f/26", at 1:1 magnification.(unlike Canon) the Nikon D200 and [a 70-180 Micro Nikkor lens] will display the actual "effective aperture" that results from focusing close.
That's correct, at 1:1. A good approximation is that effective aperture = f-number at infinity times (magnification+1). Hence 9 = 4.5 * (1+1).DaveW wrote:So what would my f9 be on a Canon then? If f13 is half of f26 would that mean the equivalent of my f9 on a Canon would be f4.5?
Yes, it would be about 3:1.If so the difference in DOF between f9 to f26 or f4.5 to f13 would be considerable.
Thanks Danny, and yes you can use any photo I have. I might have to put my butt gallery back up. It did get plenty of laughs.nzmacro wrote:I'll just say a darn nice shot Sue and you should take more grab shots if this is the result. Very nice
. So can I use this one on the butt pages when its back up Sue
. Love it !!
All the best Sue and an excellent sharp shot no matter what you used![]()
Danny.