55-250 stm vs 70-300 usm is ii on a 90D

Started 4 months ago | Questions thread
OP losifanatic Regular Member • Posts: 212
Re: 55-250 stm vs 70-300 usm is ii on a 90D

nolten wrote:

What is you opinion of the 18-135? I've been hesitant to get a long throw lens. Some of the reviews suggest it is soft at various FLs.

Very fast and accurate auto focus and my copy is sharp with good contrast. I cant complain about it at all.

So i did a few tests at 15ft and about 5 and a half feet. Well the focal lengths dont line up. 135 on the tamron is much closer than the 135 on the canon. Tested at the tamrons 100mm and the canons 135mm and matching frame with the other lens. The canon beats it in sharpness and contrast. And thats with the tamron stopped down to 5.6 to match the canon. I even added more light to the area to see if that would change it but nope the canon produces a better picture. The sharpness is close but the contrast difference is very noticeable.

Now 200mm on the tamron its razer sharp with great contrast.

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 losifanatic's gear list:losifanatic's gear list
Canon EOS 90D Canon Extender EF 1.4x III Canon EF 100-400mm F4.5-5.6L IS II Canon EF-S 18-135mm F3.5-5.6 IS USM +1 more
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