In any event, from my impression of the apparent size and shape of the TC in the photo, it would seem to me to be one of the 4-element 2X TC's. It sure looks like the lower resolution 4 element type to me. The AF coupling would be handy though. I have only tried to use it while shooting the moon coupled with my Sigma APO which, I know, it is not a very good lens to double itself I got better pictures withOUT the 2x, just cropping to pixel level from mm, although it was quite easier to manual focus when the moon was only growing.
You should manual focus, and will not get any lens info, although the cam will expose and shutter correctly. You sould have also to manual set focal length for SR. Can't speak for Vivitar but I have a Tamron 2x.
IQ is not great. Basically as in lenses and all other walks of life, you get what you pay for. If you want good IQ be prepared to spend on something better than Vivitar. If you want a cheap way to extend your lens FL and the price is right, go for it. Then you can decide if you want a better one, or if you would be better buying a longer lens.
I have decided to look for longer lens. I can't remember the last time I used my 2x. We dig into the detail The Nikon Z mm F2. With a versatile focal length range and a fast aperture for low light photography and blurry backgrounds, this lens promises sharp imagery and smooth bokeh with minimal aberrations. How does it actually perform? Find out in our full review. If you're looking to speed up your editing workflow, few pieces of hardware can make complex masking, brushing and cloning jobs easier than a digital pen.
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Photos are really nice, they are very sharp and contrast is very good. I could only hand hold both the camera and TC behind the scope to take these test photos but initial results are very promising. There are 6X7 adapter for most cameras but a 6X7 to telescope adapter seems to be very expensive.
That just leaves me the option to remove the TC and mount it in something else which is a shame. I might see if I can come up with something before I commit to taking it apart. Here's a few photos and yes, the hover fly was taken using the hand holding method mentioned above. Just holding the TC up to the camera body is giving in the region of 1.
There is around 1. If the TC was removed from the housing and mounted closer to the camera then I guess the mag would be down around the 1. Managed to strip the TC down and have it completely reversible so it can be returned to its original state in the future.
The actual TC bit is quite short and I've mounted it into a macro tube just under 1. A couple more images taken with the TC. That looks really good. I wouldn't hesitate for a second to strip it down. Could be because it was made for 6x7 and you are only using a tiny bit of the glass, the best part!
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Is Micro Four Thirds a dying format? What "I" want next Cautionary tale for those who consider for a new Sigma camera. IBIS when using unstabilized lenses.
My Take on the Leica M Canon R3 Users: Are you experiencing any focusing issues? Who reads user manuals anymore? Monitor upgrade? Advice on the set for bird photography. At current used prices, it offers a useful and economical tutorial experience with older lenses. Get one if you're so inclined, play with it and re-sell it later for about what you'll pay for it.
What you'll learn using it will more than pay for any lose when you sell it - if you sell it. I've had one since the '70's. It's average at best when used as a tele-extender and many economical consumer grade long zooms produce equal or better results than the 2X converters with mid-range teles and without the lose of 2-stops of exposure.
Lens Review Date: June 24, Converts a normal lens into a macro lens. Small and easy to use. I have mostly used this converter on a Pentax A 50mm F1. With this setup it works quite well in macro mode. I don't really like it as a teleconverter but then I didn't buy it for that purpose. It works best on short fast primes up to maybe mm. I don't like it on a tele-zoom lens which for one thing seems too heavy for the converter and you lose too much light as tele-zooms are typically slower.
On a tele-zoom it is better to use an achromatic closeup lens like the Canon d or d. It is inexpensive and handy so it is worth having one even if you have a macro lens or other equipment for macro.
You can focus with either or both the lens and the converter which might be helpful if your lens has a shorter focus throw than you prefer I've been playing a bit more with this converter.
I've tried it with different lenses. On any lens you of course get a doubling of the focus length which means a 50mm becomes a mm and a 90 becomes a mm, etc. In addition to the 2x magnification you get the effect of adding variable extension. I tried it on three different lenses. One was a Vivitar close-focusing mm that by itself focused to , the second was a 90mm Tamron adaptall 72B that by itself focused to , and the last was a Vivitar 55mm macro that by itself focused to On the mm I didn't like it too much.
Extending the converter on the mm didn't change the magnification much so the effect was not much different than just a plain 2x teleconverter. It just seemed to me to be a bad range for macro work. On the Tamron 90mm it worked a whole lot better with a nice working distance and I was able to get better than magnification.
It also worked very well on the 55mm and I also got much better than magnification. My conclusion is that this macro-teleconverter works best on lenses between 50 and mm focal length.
The converter does maintain infinity focus so unlike using extension tubes you can focus on something further away if you wish. Sometimes you may want to focus on say a flower but if you had too much extension rather than the converter in front of your lens it might be out of range. Anyhow this converter combined with a macro lens enables you to go from infinity to considerably higher than which is pretty handy. Lens Review Date: January 5, I can recommend this lens: Yes Price: None indicated Rating: 9.
Macro extender included, optical quality with mm lenses. Build quality, weight, sharpness with long tele lenses. A very convenient accessory, one of the best 2x extender out there.
Posts: 3 user s found this helpful. Lens Review Date: October 30, Working distance, variable magnification, decent teleconverter,. I had been using extension tubes before, and I was getting fed up with the extremely close MFD.
When I shoot macro, it's mostly of live bugs, and always out in the field, so more often than not, if my subject was at all skittish, I wouldn't get the shot. The main reason that I wanted this teleconverter was for the increase in MFD over using just tubes, and I couldn't be happier. With the lens I use, I don't notice much in the way of negative effects, except for a bit of reduced contrast in some situations, which is easy to fix with post processing.
I have tried it with a few other lenses and the results were somewhat less impressive, but you can't really expect a teleconverter to improve the performance of a lens. One thing I didn't care much about before I bought it, but have come to really appreciate in the short time that I've had it, is the ability to change magnification without removing your lens and either adding or subtracting sections of tube.
Being able to change your focusing distance, and even focus to infinity if you have to is great! I did notice on my copy that the infinity position is a bit out, so if I just set it to infinity, I'll get out of focus shots.
Overall, I would highly recommend this teleconverter to anyone who likes macro, but wants to keep a bit more space between them and their subject, and maybe most importantly, has a good quality prime lens to pair it with. It's a great gadget, but it's definitely only as good as the lens you use it with. Lens Review Date: February 11, A very good, 7 element 2x macro-focusing teleconverter.
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