Petzl TacTikka Plus vs Coast Lenser H7
946179
Haven't used either of the ones you mentioned, but the best one I have ever used is this: http://www.amazon.com/Rayovac-SE1WHLT-B-Sportsman-Function-Headlight/dp/B001H9NR76 I use it mainly as a work light. The diffuser, whiteness and high output are better than any other headlight I have used when working on wiring, making similar colors easy to differentiate. The blue LCD also emits enough near-UV to make it useful for finding automotive coolant leaks. If you don't need the diffuser, blue LED, voltage regulation or cool running, then Rayovac's 3-watt 85-lumen model that runs from 3AA cells might be more to your liking: http://www.amazon.com/Rayovac-Sportsman-Xtreme-3AA-size-Headlight/dp/B001KYFZL4 Both models were available at lower cost from a local WalMart when I bought the one I now use.
1060752
Both attachments work very well. When I use them I do not have a problem with the clarity of the pictures that I take. I hope this helps.
1140119
It has been sometime since I made the side-by-side review of the two models. Suggest that you view web site: dpreview.com to compare. Except for more mpixels, the real difference will be the choice of the highest quality lens to meet your intended use.
478530
I assume you are talking about the two small lenses shown in the picture. They are very cheap Vivitar lenses. One is macro and the other is wide angle, both are garbage. The rest of the bundle is fairly decent though.
2124235
I'd recommend you get a longer mounting plate. The Arca-Swiss style plate the comes with the Opteka GH1 is only 75mm long. From my own experience with a Canon 70-200mm f/2.8 lens attached to a 5DMrkII body and battery grip, I had to go to a 90mm plate to achieve the proper gimbal balance. The hefty weight of the body with grip acts like a counter balance and requires additional forward positioning to properly balance the lens and camera.
1746182
I don't have experience with those other lenses but I can tell you it is an amazing lens and worth every penny. I use it to shoot weddings and also do a lot of artistic shooting with it of flowers and stuff like that. The background blur is incredible.
42098
The Nocticron IMO is better corrected and more Leica-like. The Voigtlanders get a tiny bit more light but the rendering is different. The 42.5/0.95 was excellent before the Nocticron was released but after comparing images from both, the Nocticron just seems to be better. The 25/0.95 is a different focal length but is also a fast lens which now has a clickless aperture ring. I'm a stills person so this is from a stills perspective. If you're into video, the Voigtlanders are tough to beat due to the clickless aperture rings. If you need optical stabilization however, the Nocticron is your best bet that is still fast and mid-telephoto. The Nocticron IMO is better corrected and more Leica-like. The Voigtlanders get a tiny bit more light but the rendering is different. The 42.5/0.95 was excellent before the Nocticron was released but after comparing images from both, the Nocticron just seems to be better. The 25/0.95 is a different focal length but is also a fast lens which now has a clickless aperture ring. I'm a stills person so this is from a stills perspective. If you're into video, the Voigtlanders are tough to beat due to the clickless aperture rings. If you need optical stabilization however, the Nocticron is your... » Read More The Nocticron IMO is better corrected and more Leica-like. The Voigtlanders get a tiny bit more light but the rendering is different. The 42.5/0.95 was excellent before the Nocticron was released but after comparing images from both, the Nocticron just seems to be better. The 25/0.95 is a different focal length but is also a fast lens which now has a clickless aperture ring. I'm a stills person so this is from a stills perspective. If you're into video, the Voigtlanders are tough to beat due to the clickless aperture rings. If you need optical stabilization however, the Nocticron is your best bet that is still fast and mid-telephoto. « Show Less
725757
the hfs is more powerful and more expensive than the hf. the hfs lens and chipset if better as well. you pay more for better quality
143456
It depends on your equipment and needs. My suggestion is to rent one from BorrowedLenses, they do have it and try it out before buying. I have done this with some recent L series lens purchases. It was much easier to make a decision on those fat lenses.
1066361
You are better off paying the extra for the Nikon teleconverter 1.7 times converter. Have had no luck with the vivitar, not as compatible as the claims. A lot of jitter on the lense.
827331
It's a hugh difference; this is a fisheye, 16mm it's a wide lens. try it, its awesome!
1367140
I bought both the Vivitar wide angle and the telephoto. I use them with my PadCaster to change the focal length of the iPad. I have been satisfied with both lenses, especially given the price. I have suggested to PadCaster that they design a turret so I can mount both lenses and easily switch between them. No response from them. (They are not Carl Zeiss, Canon, or Nikon quality, but they work for me.)
57687
Buy the Rokinon Lens. It's a better build. Rings on the Opteka are made or cheap plastic and can crack.
888824
I am using the Vivitar version of this and as far as I can see, there is no difference other than the price. I have not only mounted this on a tripod, but also a monopod.
582401
I used to have those 2 lenses and moving to a single 18-200mm gave me a whole new experience in photography. No more spending times switching lenses on-the-go, which saves me from missing shots and protects the camera a little further (in case you would need to switch lenses outside, like in a beach or something -- my case).
1645861
Paul, thank you. From the specs alone, I agree, but I think there must be some significant difference between the two sets. The only thing I can see from the specs is something about the eyepiece adjustment.
128976
I've used both and recommend the Niterider. The light output and features are roughly equivalent but the seals on the Solas are much better. The bottom seal failed on my first Cygolight. They replaced it under warranty and the service was excellent. A similar failure happened on my second Cygolight, allowing road salt into the device and corroding it. After that I bought the Niterider. The Niterider seals have a much better design and I've had no problems with them.