Strodav Loc: Houston, Tx

If you are into wildlife / birding or just looking for an affordable long lens, this youtube video by the Northrups is worth the time to watch. As always, you have to decide what part of any free information, if any, is right for you.

https://www.youtube.com/watch?v=h-aYXUoRDkM

No snarky comments about the Northrups please unless you have over a million and a half youtube followers and are an author of a best selling book on photography.

47greyfox Loc: on the edge of the Colorado front range

I watch most of the Northrop videos and enjoy most. This is a particularly good one. Maybe because the Canon 7d2 and Sigma 150-600 C is one of my personal favorite combinations. We all like a little validation now and then.

olemikey Loc: 6 mile creek, Spacecoast Florida

Not a bad video review, sorely lacking in examples, so it is one of those "take my word for it" reviews. (PS - No issue with the Northrups or their reviews). In personal experience with many I have found that the greatest problem with the third party lenses (and some - to a lesser degree with native zooms) is variation in sharpness with copies of same lens, and the lack of time and adjustments to technique that many folks new to big lenses do not take time to master. Lenses with docking/adjustment capability are a big plus, but the older ones can produce fine shots if time is taken to really learn the lens. Technique with big lenses can make a huge difference in quality of output, and can often mean the difference between one persons rating compared to another.

Strodav Loc: Houston, Tx

I get very good results with my 3rd party glass, but when asked about it I let them know IF you are willing to test and tune you can get very good results and save some money, but if you are not willing to test and tune, then stay with OEM glass.

alberio Loc: Casa Grande AZ

If I am careful with technique, my Tamron 150-600mm G2 works very well with my full frame and crop frame Canons.