Tamron and Sigma lenses crop factor? 70-200mm 2.8

O

ohh.justin

Senior Member
So a few questions regarding, Tamron lenses and Sigma. I was interested in purchasing a Nikon lens specifically the Nikon 70-200mm 2.8 and or 24-70mm lens. But with low cash funds I started looking at 3rd party lenses. I had a few questions. One is there a crop factor because I'm using a Nikon d90? Secondly, if I converted to a FX camera later on will it affect it? And lastly has anyone uses these lenses and give any feedback?

​Thanks!!
 
Marcel

Marcel

Happily retired
Staff member
Super Mod
First, yes, there is a crop factor since you are using the D90. It's a 1.5 x factor. But, wether you'd be using Nikon or any other brand, the crop happens with the camera's sensor, so it's the same with all brands.

Second, all the lenses you've listed are FX lenses.

Third, there are plenty of reviews on the web about all these. I couldn't help you more since I have the Nikon ones. One thing I know for sure is that the Nikons keep more of their value on the long run.
 
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