Howdo all, I'm at my wits end! My problem is getting the correct exposure with my Nikon D2Xs or D300S and SB600 and/or SB800 flash units for my macro work. When in manual, which I use most, if I need to expose a 1/3 stop more, it exposes 2-3 stops more. If I need to under-expose by say 2/3rd stop it under-exposes by, say, 3 stops. On many occasions I have not even been able to get the correct exposure at all (it either under-exposes or over-exposes, never in between). This happens no matter what mode I use. I have applied every single change to try and solve the problem. Everything from exposing in manual/aperture priority/P; TTL/manual on the flash; changing exposure on the camera either through shutter speed/ISO/aperture; distance of flash from subject; power of flash; etc., etc. Other times it works okay(ish) and usually first time (I just need to adjust shutter speed up or down to get the right exposure, and usually down when the batteries begin to fade!). At such times, I do get the correct exposure, usually in manual mode on the camera and manual mode on the flash, but invariably get some under-exposed (because the flash hasn't had time to re-charge) and over-exposed (no idea why). I've used the system in wireless and wired. Batteries are fully charged and I either use rechargeable AA's or Quantum battery(ies). I run a Nikon system for my macro work. I either use two SB600 flashes in tandem or a single SB800 for fill-in, both outdoors or indoors. Please assume that I at least know the basics of using my flash - I've read the manuals backwards as well as the more in-depth accounts on-line and have had five frustrating years of using them. I don't normally use flash but there are circumstances, i.e., freezing the motion of a moving insect or filling in the shadows in direct sunlight, where I need it. Sadly I have lost some money-earning shots through the variance in flash exposure and it's been getting me down lately. If I've left out any important information you need to help suss out the problem, please do say so. If anyone can help pinpoint the problem I would be very, very appreciative as would my hair, half of which has already been pulled out. Many thanks. Cheers, Steve.