[narual]

if you use Lightroom and have been good about tagging what lenses you use for pics, I'd say look at your usage history - if you never take it out, sell it.

If you need a second opinion, put it on your camera and go out without any other lenses, spend a day with it, if you fall back in love, keep it, if you just felt disappointed at shots you missed, sell it.

[Mothballs]

Which ones do you never use?

Start there. If you're not using it and usually reach for something else, then that's a pretty good sign.

[pacerr]

Imagine you've sold them ALL and are starting over again. Which ones would you repurchase regardless of the cost?

[VoiceOfReason]

Hmm, the Sigma 100-300, Pentax 28-80, and Takumar 70-210 never get used. The cameras are all for different things (K-01 is full spectrum, UV, and IR use only), I use the K3 for longer shots and with the 18-135 it is a nice compact walk around with one lens grab and go kit. I have not had the time to test out the 12-24 on the K1 yet, but it was flawless on the K3. I bought it and the 24-70 (excellent copy) for my FF kit. My 40 hasn't been used in a long time, and my 50 rarely gets used other than for astrophotos, where it is great. The 16-50, 18-35 (mine is a very good copy), 60-250 (almost FF compatible), 70-200 (it is a different beast from the 60-250), and 150-450 (I love this lens) all get used. I have only used the 1.7 a few times. I mean to try it with the 150-450 on a moon shot. The 1.4 has been used off and on, though I am disappointed that it certainly is not FF compatible because it works great. I have not used the excellent copy of the 8-16 I have in a while.

I do with I had the new Pentax 15-30, 24-70, and 70-200 set, but I am an amateur who does this as a hobby. That would be another 4k or so in lenses. I have some thinking to do.

[northcoastgreg]

I do [wish] I had the new Pentax 15-30, 24-70, and 70-200 set, but I am an amateur who does this as a hobby. That would be another 4k or so in lenses. I have some thinking to do.

If you sold all your Sigma glass along with the DA* 60-250 and maybe the DA* 16-50, you could probably afford the DFA 15-30 and the DFA 24-70. The DFA* 70-200 would still be out of reach, but the Tamron 70-200 does have the advantage of weighing significantly less than the Pentax.

[aurele]

Hmm, the Sigma 100-300, Pentax 28-80, and Takumar 70-210 never get used.

In that case, i would say, sell those.

I have a rule : sell what you don't use for a year.