I havent heard much about quantaray ever.. Someones selling a used one on craigslist near me. Supporting Member. It may have the contacts for AF signals to pass through from the camera to the lens etc. That's why most lenses don't have anything smaller for a maximum than F5.
The problem is that a teleconverter changes the effective max aperture That means that if you put it behind your mm lens, the effective max aperture will be something like F8-F11, depending on the zoom. That will not give the AF system enough light, and your AF likely won't work. You could use it, and manually focus though. And there is still the issue of image quality to think about. Image quality usually suffers a noticeable amount when using a TC But if more reach is more important that maximum image quality I've come to the understanding that with my current lenses I'll be losing AF..
I'd be using it more for shots of the moon than anything really, so f is fine for me as I'll be on a tripod with a trigger release possible locking the mirror too. It's more - is quantaray decent quality. Probably should have phrased that better.
Thanks for the reply! Tony S Been spending a lot of time on here! If the name on a lens or other item with glass in it starts with a Q don't get it. You will have more than "some" image quality loss with the set up you are talking about.
They are low quality unless you are looking for a good paper weight. Most of the time they are made for them by Sigma and are their low end models. Tony S said:. Click to expand I've also read Tamron, Tokina, and Cosina make stuff under the Quantaray name. While Sigma, Tamron and Tokina all make some very nice to great glass, as Tony said, the Quantaray stuff isn't even close to those mfrs best glass.
It seems to be very difficult finding out who makes what. Sigma, Tamron and Tokina don't have any mention of Quantaray on their web sites. That's not surprising, tho. I have also heard warranty issues can be difficult to get resolved.
This may be due to trying to figure out who made it. Read our review to get all the details. What's the best camera for shooting landscapes? High resolution, weather-sealed bodies and wide dynamic range are all important. In this buying guide we've rounded-up several great cameras for shooting landscapes, and recommended the best. If you're looking for the perfect drone for yourself, or to gift someone special, we've gone through all of the options and selected our favorites.
These capable cameras should be solid and well-built, have both speed and focus for capturing fast action and offer professional-level image quality. Although a lot of people only upload images to Instagram from their smartphones, the app is much more than just a mobile photography platform.
In this guide we've chosen a selection of cameras that make it easy to shoot compelling lifestyle images, ideal for sharing on social media. Submit a News Tip! Reading mode: Light Dark. Login Register. Best cameras and lenses. Started Oct 17, Discussions. Forum Threaded view. Oct 17, Not really seeing any reviews for AF pentax mount 2X teleconverter on a for example a lens or aon a any suggestions. Reply to thread Reply with quote Complain.
Reply Reply with quote Reply to thread Complain. KentG's gear list: KentG's gear list. I'm also have such question in my head. What is best teleconv. Zebooka's gear list: Zebooka's gear list. Currently the SIgma Matched converters are the only converters I would consider using.
This means they will no fit any lens only those designed for. Another down side is they are body drive AF only so wont give AF on the new Sigma hsmII At present I don't think there is any available converter for any of the new f2. KentG wrote: You have to know how a TC works first. I think I'm going to wait a while. LBA getting out of hand as well as the accessories. But I appreciate all the help, the tele converter offer, just all the help in general.
I'm much better informed now. You people are great. F Forum M My threads. You may also like. I'm also not entirely convinced the results would be enough better than just cropping to be worth the bother for me, given my relatively limited need for focal lengths beyond mm.
I guess I remember the Vivitar 2x converter from my 35mm days, and was not impressed. Style Selector. All times are GMT The time now is AM. See also: NikonForums. It's great to see you back on the forum!
Have you considered joining the community? Forum Search Options. Advanced Search. Pentax Items for Sale. Wanted Pentax Items. Price Watch Forum. List a New Item. Get seller access!
Pentax Retailer Map. Sample Photo Search. Recent Photo Mosaic. Today's Photos. Member Photo Albums. Exclusive Gallery. Photo Sharing Forum. Critique Forum. Official Photo Contests. World Pentax Day Gallery. World Pentax Day Photo Map.
Articles and Tutorials. Member-Submitted Articles. Recommended Gear. Firmware Update Guide. Firmware Updates. Pentax News. Pentax Lens Reviews. Third-Party Lens Reviews.
0コメント