I have been leaning towards the Tamron 35-150 - which I have had on back order for months now - to be my walk around/portrait lens, as my favorite travel portrait distance is around 135, but I more often shoot wide when I am traveling. However the Sony 135/GM has begun to call me again (I took some of my favorite pictures ever with the Canon 135/L). Am curious if anyone has used both of these lenses and can compare portraits taken around 125-150 FL?
Many thanks in advance
I haven't used the Tamron but the 135mm GM quickly became one of my favorite lenses ... incredibly sharp and useful for far more than portraits. Incredible creamy bokeh too!
It's a GM and it's also a super sharp prime ... zooms in general will offer inferior IQ and be slower glass (which matters in low light) by comparison.
They are also heavier and bulkier in most cases.
Zooms are always about making a compromise ... you swap smaller maximum aperture, less sharp glass (especially at the wider end) in exchange for the ability to change the FL (ie. zoom).
Less seasoned photographers like zooms because they don't (ever) need to change lens and/or consider their required FL ahead of time.
I normally try to avoid using a zoom these days and will grab a prime over 90% of the time for the superior IQ.
These days I find that I use a zoom a lot less than I used to especially since Sony created these amazing GM primes.