On 15/01/2021 14:47, R D S wrote:
Is it just me, or if you buy a lens described thus
"55 mm 0.45 X Macro Photographic Fish Eye Wide Angle Lens for Nikon D70"

Would you expect, having waited a week for the bloody thing to turn up,
to be able to attach it directly to a D70?
Cos you can't, it has a thread on it.

Common scam for 3rd party lenses that may require an adapter, which may
also prevent some auto functions. I do get the impression on Ebay that
there is a lot of lenses from older 35mm film cameras advertised to fit
more modern cameras with an adapter. These tend to be without any auto
features (auto focussing, auto f stop adjustment etc.) and much larger
than a lens designed for the camera which may have a much small sensor
(than 35mm film).


And for the photography question,
Do I simply need one of these?

https://www.ebay.co.uk/sch/i.html?_f...89162&_sacat=0


What for - your new lens or an existing "standard" lens?

Probably not the correct adapter for your new lens.

If it's for reversing your standard lens to use it for close(r)-up work
just make sure that the filter screw thread on the front of your
existing lens matches the screw thread size stated in the advert (55mm).

Any auto features are disabled because you are now using the filter
thread to attach to the body of the camera (that side of the lens has no
electrical contacts.

Also consider extension tubes (with or without reversing the lens) that
fit between the camera and the body

https://www.ebay.co.uk/sch/i.html?_f...w=323011889162

https://www.digitalcameraworld.com/u...ro-photography

Three different sizes of tube in the kit so you have a choice of
magnification

You will have to stop down your lens a lot to get a reasonable depth of
field with extension tubes so you may/will need more light -
possible/probably a flash gun mounted so the the tube/lens does not
block the light before reaching the subject being photographed. My
compact camera has a build in flash unsuitable for use with extension
tubes so I mount a flash gun on a tripod that is optically triggered
from the cameras flash (slave flash).

With extension tubes its probably better to be in manual mode so that
you can override the auto aperture setting to get the optimum depth of
field and set a slow flash synced shutter speed where the flash duration
controls the exposure. Moving objects such as outside in a light wind
can be a PITA as the object moves in and out of focus and with a very
shallow depth of field - hence flash photography rather than natural light.




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