90d and Tamron 150-600 - sharpness issue or wrong expectations

Started 3 months ago | Discussions thread
indusbreed Senior Member • Posts: 1,114
Re: 90d and Tamron 150-600 - sharpness issue or wrong expectations

BlueFish1980 wrote:

Hi All,

I purchased them in September and overall frustrated with the image quality, looking at other pictures people are sharing with this combo, I see higher image quality when zoomed in than mine.

I have attached 4 examples, usually shoot handheld, VC in mode 3 or VC off, doesnt seem to make a difference, getting average looking images. I'm starting to doubt if i have a bad copy of lens or is it technique issues. Each of these images when zoomed in doesnt have sharpness, or looks blurry.

Please suggest if there is any inference or suggestions based on these images. Let me know if any more info is required.

Do some micro focus tests on the lens. Not sure if its Tammy or sigma who comes with that USB dock to calibrate the lens.

ISO 64k on a crop body is not going to give you super clean images. I have seen these super zooms resolves better details on  a FF bodies. I know its little expensive but canon 100-400II is an excellent lens. On 90d with 1.6 crop, you are almost at 600mm territory if you shoot in that range. It will out perform these 150-600 day in day out . Even Tamron's 100-400 variance will have cleaner files when cropped.



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