Originally posted by zkarj I've just done a study of my 55-300 shooting parameters using Lightroom Classic's nifty filtering tools. I said before I almost always shoot at f/11. Certainly since I've had the WR, there was a period where I seem to have tried out f/8 for a bit before returning to f/11 and all the other stops barely get a look in. But with the previous ED model, I guess I took a while to learn where that sweet spot was, but once again, f/11 rules the roost. I also thought it would be interesting to look at the focal length used. I would have picked that 300mm would rule here, but I was surprised by how uniform the other values were (noting that LR normalises these to a discrete set of numbers).
The ED was used 11 Jan 2009 – 2 Oct 2017 (8.8 years)
The WR has been in use 4 Oct 2017 – present (4 years)
Interesting stats. Unfortunately, although it looks like you use 300mm more than any other focal length, it's still only around 1/3 of the total images taken with the lens, so not sure if you can justify a 300mm prime, but if you can cover most of those other focal lengths with another zoom, then a prime might make sense if you can find one at a decent price.
---------- Post added 09-11-21 at 06:09 PM ----------
Originally posted by zkarj But forsaking the 55-300 for today, I had the Tamron 90 f/2.8 on the camera and it seemed appropriate for these celebrations of Spring.
Very nice. I like the Tamron 90/2.8. I considered selling it when I got the D-FA 100/2.8, as the Pentax lens has quickshift and weather sealing that the Tamron doesn't, but for portraits, the 10mm difference in focal length is significant, and I feel the Tamron makes nicer portraits. In a portrait situation, I'm less likely to need weather sealing, and AF works fine.
I need to do another lens comparison though, as when I decided to keep the Tamron, I didn't have the DA* 50-135/2.8 which I have now, and that covers the same focal length, but it is a zoom, and primes are typically sharper. I guess I should do a comparison, and if the DA* lens is good enough, I may not need the Tamron any longer.
---------- Post added 09-11-21 at 06:17 PM ----------
Originally posted by zkarj
I reckon anything between f/8 and f/16 is pretty decent. Lower than f/8 has definite halos and above f/16 starts to lose serious definition.
Between f/9 - f/11 it's hard to see much difference, and I think f/8 is only slightly behind. It's certainly not a fast lens, but if f/9 works as well as f/11, that does make it a bit more useful.