Nidelva river through Trondheim Norway

Nidelva river through Trondheim Norway
by Saaru Lindestokke                

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0

If your focus is really just getting out to 540mm in a very small package, I would use only the lens and crop the image to achieve the desired size for your intended use. Are you satisfied with it? Great, you're done. Not satisfied? Think long and hard about what you want. My experience with third-party teleconverters on mediocre lenses is that the results ...


2

The lens I am looking at is the [Tamron] 18-270 F/3.5-6.3 ... I am fairly certain of full compatibility of this lens with whichever body I end up choosing, but maybe someone can confirm this for me? Yes, it's compatible. In addition to that, I am considering purchasing a Tamron SP AF 2x Teleconverter (or other similar if there would be a better ...


2

but I have read that just maybe, teleconverters used with longer focal length telephoto zoom lenses isn't all its cracked up to be. Well, sort of. Not exactly. Teleconverters work best on longer focal length prime lenses. As you go shorter, generally, or if you use them on zoom instead of prime, there will be more potential issues with image quality. ...


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Here are points to consider when making choice: 1x crop sensor + teleconverter is almost never better (have not seen counter-examples yet) than 1,5x crop sensor with same resolution and technological level + same objective without teleconverter. Teleconverter is extra glass and extra glass always means some light loss, some contrast loss and some ...


1

This question (or a variation on it) pops up periodically, and one thing that I think hasn't received much attention is how much more there is to this than "adding an autofocus motor" eludes to. (And, I enjoy exploring into the realm of the somewhat ridiculous.) Honestly, adding an "autofocus" motor is not going to be hard. Grab a small and speed-reduced ...


6

How can I modify my NIkon D5500 so I can make a vintage lens auto focus? You can't. I learned that using a TC-16A AF Teleconverter 1.6X might help ... Whatever you learned is probably wrong. From my googling it looks as if the TC-16A was designed to turn AIS lenses into AF lenses (i.e., an interim step to add electronic communication and the ...


0

I have the Sigma 50-500mm, the OS (stabilisation) is fine, however the lens is a tad bit soft at the 500mm, and it's very heavy so a tripod is really mandatory. Can't say about the other lenses though.


1

I had a Sigma 150-500mm f/5-6.3 lens. I don't know how that lens compares to the lenses you're considering. The image stabilization worked well, but autofocus hunted all the time. Image quality was fair, not great. Add a teleconverter and the image quality would have been poor. Autofocus, already poor, would not have worked at all, and shooting in ...


1

Assuming you are working in good light during the day, you don't really need an extremely fast aperture. What you need is focal length. The more the better. But only you can answer the question regarding whether paying more for better performance is worth it or not. The Sigma 150-600mm f/5-6.3 DG OS Contemporary is a popular lens due to the focal length ...



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