Petrochemist
Suspended / Banned
- Messages
- 1,352
- Name
- Mike
- Edit My Images
- Yes
I use some of my lenses reversed in front of my main lens as a macro dioptre. For this knowing the actual makes a big difference & FOV would be fairly useless.
Reversing a 50mm lens on a APSC kit zoom (18-55) would give a bit under 1/2 lifesize to a fraction over lifesize on the sensor.
A 28mm reversed on my 100mm macro lens will give images at around 4x lifesize. Both of these took seconds to work out, so I can have a chance to select a suitable combination before the subject has disappeared.
If using extension tubes again the actual focal length is vital to picking the right extension.
Reversing a 50mm lens on a APSC kit zoom (18-55) would give a bit under 1/2 lifesize to a fraction over lifesize on the sensor.
A 28mm reversed on my 100mm macro lens will give images at around 4x lifesize. Both of these took seconds to work out, so I can have a chance to select a suitable combination before the subject has disappeared.
If using extension tubes again the actual focal length is vital to picking the right extension.
