When shooting insect flowers, which is better for Nikon D90 to use the macro head 105mm, 90mm or 60mm?

In fact, the D90 has cheaper 40 micron and 85 micron lenses, which can also be used.

It doesn't make much difference if you just shoot flowers, but if you want to shoot insects, it is recommended to buy 105. The focal length is far away, so it is not easy to disturb insects, and the quality of this head is also the best suggestion. If you have plenty, you can call 105 directly, or you can call 85,90 if you are nervous.

Of course, the disadvantage of long focal length is that the depth of field will be shallow and difficult to control. It is recommended to buy lamps conditionally.