Takes photo but no picture ( Very slightly exposed)
Tamro AF28 300mm F/3 5 6 3 XRDi VC LD IF Macro for Nikon D700 Intermittent problem Shutter works''but photo not taken with correct exposure. Initially looks like no exposure but looking carefully I can see a faint image.
Data shows F-stop blank and Focal length also blank,
Tends to be somehow linked to autofocus. If Focus is working then image ok .
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This is a macro lens, and I can't find it has an auto focus nor can I find if it has a chip, or even any electrical connection. The sharpness though should be good.
When you are using a non chip lens on a Nikon, you only can use it in manual. So you have to put the main dial to M. Then you have to focus manual and just take a shot. the result will be to dark or to light, unless you already knew hoe much light you have and dialled the aperture and shutter time in correct.
For macro you want a large aperture number, to have as much sharpness (large depth of field) so the best thing is to choose f 8 or 11 and turn down the speed till you have a good light picture.
I found a forum about this lens, but they did not say a thing about the specs. Tamron Adaptall 2 35 70mm F3 5 CF Macro 17A
Check some results here: Tamron 35 70mm 3 5 17A on the GH2
Though the Tamron AF 55-200mm Di II LD Macro has "Macro" in its
name, it's not really a macro lens. Maximum magnification is about 1/3 life size
(Tamron spec it at 1:3.5) as you can see from the following image below, which was shot
at 200mm and at the closest focus distance (0.9m/37.4"). This isn't too bad, but
it's more of a close focus telephoto lens than a "macro" lens (bolding for emphasis added).
I have a Nikon D60, and it has numerous settings, including aperture and shutter priority, and others. It sounds like you have have it set in aperture mode, set for f/16. First try taking a picture in dimmer light, where it's not so bright. That should cause the shutter to open longer. The camera will adjust the shutter speed to take the best picture at f/16 if it's set for that.To adjust it to something other than f/16, on my camera, you use the thumb wheel on the back of the camera. Try changing that if it has a thumb wheel.
Next try it in Auto mode by rotating the dial on the top of the camera to the green setting and see if you get a batter picture.
If all else fails, consult the camera manual, if you have one.
Besides any problems with the focus mechanism which should be fairly obvious, your shutter speed may be too slow. A slow shutter speed can be set manually or caused automatically when using a smaller aperture in lower light settings, the camera compensates by opening up the shutter. Try testing your lens out in bright scenes with the aperture open. Another problem is with manual lenses at low apertures. It can be difficult to manually focus at just the right point because shooting around f.4 with a longer barrel lens leads to a very shallow depth of field. To compensate, try a smaller aperture or take a few photos of a subject while adjusting your focus to get the "money shot."
If all the above fails make sure to double check your sensor and lens are clean, a greasy or dirty lens will always lead to less crisp photos.
Hum, something doesn't sit right with what you just described. If the camera in focus green dot comes on solid then the camera is saying the image is in focus. Did you just drop the lens or was the camera attached to the lens and the whole assembly hit the ground. Lets back up some more what is it you are trying to focus on, meaning the camera will be confused solid colour, no contrast, glass, water, chrome. Or trying to focus on something to close for the lens optics yes I know you said Macro but even macro but even this lens has a minimum focus distance. Check your specification sheet that came with the lens. Okay another thing and this is a biggy if you are trying to focus on something at F2.8 close in the camera may catch focus but the DOF is so shallow you can't actually see the focus point and everything appears out of focus. Okay another thing, lets say you have this lens mounted on a tripod at a setting of F11 and a shutter speed down into the 1/50 or even a bit slower, your think you are okay because it's on a tripod right, nope just by you tripping the shutter you have moved the camera and the pictures will be blurry under close examination. In this case you need to do one of two things or both. You can use a 2 second shutter delay and or mirror lock up. I use both when available. I've even gone to using an electronic release in some cases. So if the camera in focus light in the lower right corner of the viewfinder comes on solid then the camera has focus. If the lens was off a bit the in focus light wouldn't come on or if it did it would flicker and if it's not got focus the shutter couldn't be released. So sorry I think it's one of the other problems I mentioned. Hope I helped and not confused you to here is a sample picture a center crop of a much larger picture the scene was 3/4 mile away.
It's pretty crisp but the sizing took a bit the original you can count the brick on the building.
Tamron makes their lenses available with a variety of mounts. A lens with a Canon mount will fit Canon cameras but not Nikon cameras. A lens with a Nikon mount will fit Nikon cameras but not Canon cameras. As long as you buy a lens with a Canon mount, you shouldn't have any problems.
Try sending it to PhotoTech Repair Service in NYC. They are Nikon authorized, and can do the repair under warranty if you still have it. Also if you join they're facebook page, they will give you a 10% discount.
Here is the facebook page link, it has everything you need to send it in.
Turn the aperture ring to the smallest aperture (largest f/number) and lock it there. Set the aperture and shutter speed on the camera body. You didn't specify which camera you're using, so I'm afraid I can't give you details there.
You will find all the information in the camera manual, not the lens manual.
You probably have oils on the aperture blades and they do not close to the F stop you set as quickly as required, thus causing the over exposure. Easy to pinpoint: sent the aperture to full open (F1.8) and use appropriate shutter speeds as determined by the camera (in manual mode), if the picture does not over expose, then the problem is with the oiled contaminated aperture blades. Have it cleaned.