[大吉]

今日買了TAMRON 90MM 2.8比D70用發覺最大光圈用不到2.8光圈只用到F3請問各位D70機你們發生過這個情況嗎

[ppppphilip]

你買既係咪新個支

[mcca]

this is NORMAL
then lens produce Macro ability by moving the lens further away from the sensor, so that the light gain decrease
in 1:1 situation, you're just getting around f4
u only get f2.8 while you are shooting at infinity

[MISBWORKSHOP]

But my Nikkor F2.8D 60mm can easy to use F2.8 wor!

[tam_dominic]

Is it 'di' version ?
It is a very sharp lens.

[mcca]

to MISBWORKSHOP:
which body are you using?
your camera should read f4.x when focusing to the closest distance at 1:1 by using this 60/2.8macro lens
i mean the camera reading, not the lens aperture ring
of coz the aperture ring stays at f2.8 while you are using FM2 etc