What is the speed of the lens and what does the doubler add?
1398614
If by speed you mean F Stop, the speed of the lens is F/8 (at minimum zoom) to F/16 (at maximum zoom).If you mean auto focus speed, it has manual focus.The 2x doubler increases the magnification from 1300mm up to 2600mm.
2193888
Close, but no. If you're looking for the speed of the 35 mm lens, you'll want the 18-300 mm lens, approximately $900.00. But the speed is so close that I don't worry about it, I just change settings to try and compensate with the camera.
2163472
Sorry , I don't know the answer to this- I bought the lenses for my sister-in-law.
322322
Speed is good along with the noise reduction - This is more of a question about the lens you intend to use. As alway the bigger (lower f-stop) the better (and unfortunatly more expensive.)
447979
Not sure as I didn't time it but average speed. I wasn't crazy about the clarity but then it might have been the photographer!
1588419
The 2x is an excellent extender, however it does slow down the auto focus response of whichever lens it is attached to more than the 1.4x. I think the 1.4x allows for noticiably crisper images than the 2x with my 300mm f4.00 Canon lens, but the 2x does extend the range some of course. I have both extenders, but the 2.0 ends up sitting in my camera bag a lot more often that the 1.4. They are bothe excellent extenders, and make my excellent 300mm lens a very good 460mm lens and an above average 600mm lens in my opinion.
575774
Well I think 1.8 is ultra fast (vs 4), so I would use it in a particular situation if I had that lens.
603497
Bought one for my SX510HS and it works like a charm... wish they would now offer a doubler lens to screw into the fitting. That would be AWESOME.
1213448
+3.5. And, besides: I tried them in a store and found that they they work superbly for adjusting on the fly between -6 and +3.5 correction (more or less). The optics seem excellent. As a fashion statement a bit awkward but hard to make the double lens system look better. The dial adjusters are discretely positioned and effective. I have no idea about durability.
1344376
Not sure but this lens is very sharp. Somehow it can vibrate a little but the built of the lens is solid. Anyway, no complain as it cheap.
727731
That part of the model number tells you about the lens. The lens with the GF5X is an upgraded model.
177055
Yes, it comes with the 2X multiplier which adds about 2" to the overall leanth of the lens. A tripod is an absolute necessity when shooting with this lens and I would recomend using a remote trigger. Quality is good for the price, but you won't get the sharpness of higher end lenses.
766703
Decent, but not as good as the 14-24mm f/2.8 Having one stop better means the difference between ISO 6400 or ISO 12800. It could mean the difference between 1/15th of a second and 1/30th of a second. I think the purpose of this lens is more of landscape than a low light performer.
2204553
It's both because it is a zoom lens. It's 2.8 capable when used at the 24mm setting and 4.0 when zoomed in using the 85mm aspect.
1343521
Ditto on the other answers, plus I added a Wide Angle Converter Lens. Expensive, but worth the price to avoid panning.
857714
HelloNot, but the truth which does not make much difference, this lens is worth what it costs.Regards,
1380695
The new lens is smaller and lighter, performs just as well and is (or was) slightly less expensive. The downside is that is a tad slower at the long end --6.3 v. 5.6.