Hello and thanks for having me as a member. I am a real photonoob, just starting to learn so please bear with me.
I posted this in the D60 section first, hoping for a bigger audience here. If I am breaking any rules admin, please delete the other post.
I facet gemstones and am having a fit trying to photo them. Hard to sell them with blurry pictures.
I just got a set of 3 extension tubes, no name brand, they fit and seem well made. 9, 16, and 30mm. All aluminum with matte black finish, probably anodized. But when I put any combination of tubes on the camera I get this array thru the viewfinder.
Doesnt matter if its turned on or not, doesnt matter what I aim it at, its always there. It still takes pics fine, but rather hard to focus with this in the way.
There is a center dot, always red, surrounded by 6 white dots, then the rest kind of grey/bluish. All in a perfect honeycomb pattern. It only shows up with the ext. tubes, with either one of my 2 lenses. Looks to me like a multiple reflection of the aperture opening. Doesnt show on any pics.
I took the gem picture below with the pattern in the viewfinder. Not too bad, but the stone is the size of a penny. For small ones I cant tell if its focused because of all the visual interference from this pattern in the viewfinder. Kind of like looking thru a wet screen.
Again, the camera works just fine without the ext. tube or tubes. Mirror clean, nothing loose.
D60 with 18-55 lens. Same thing with 55-200. Using center sensor, control dial on M, autofocus off.
I will stop rambling now and wait for some hopefully professional advice from you guys and girls.
Nick, Stuck in SC
I posted this in the D60 section first, hoping for a bigger audience here. If I am breaking any rules admin, please delete the other post.
I facet gemstones and am having a fit trying to photo them. Hard to sell them with blurry pictures.
I just got a set of 3 extension tubes, no name brand, they fit and seem well made. 9, 16, and 30mm. All aluminum with matte black finish, probably anodized. But when I put any combination of tubes on the camera I get this array thru the viewfinder.
Doesnt matter if its turned on or not, doesnt matter what I aim it at, its always there. It still takes pics fine, but rather hard to focus with this in the way.
There is a center dot, always red, surrounded by 6 white dots, then the rest kind of grey/bluish. All in a perfect honeycomb pattern. It only shows up with the ext. tubes, with either one of my 2 lenses. Looks to me like a multiple reflection of the aperture opening. Doesnt show on any pics.
I took the gem picture below with the pattern in the viewfinder. Not too bad, but the stone is the size of a penny. For small ones I cant tell if its focused because of all the visual interference from this pattern in the viewfinder. Kind of like looking thru a wet screen.
Again, the camera works just fine without the ext. tube or tubes. Mirror clean, nothing loose.
D60 with 18-55 lens. Same thing with 55-200. Using center sensor, control dial on M, autofocus off.
I will stop rambling now and wait for some hopefully professional advice from you guys and girls.
Nick, Stuck in SC