| Joined: | Wed Apr 11th, 2012 |
| Location: | Denham, United Kingdom |
| Posts: | 293 |
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I have 3 FX & just one DX lenses.
Most of my photos are taken between 70 & 100mm on the D90.
That translates as, between 105 and 150 on FX. You don't say which lenses you have but if they cover the range 70-200 you would be OK with the D610 but you would lose out if you want to take images at longer focal lengths as your lenses will appear "shorter" with the larger sensor.
I have never used either of the cameras you are considering so I can't comment in detail but I would expect the handling to be similar so it really comes down to whether you want FX or DX. My preference is for FX, mainly because DX cameras that meet my requirements are no smaller or lighter than FX so I see no benefit in DX. You may find the opposite. Try your lenses on both and see how you get on.