Top positive review
16 people found this helpful
Works awesome on the Canon 28mm f/1.8 prime lens
on July 20, 2012
I was looking for an ultra wide angle lens for landscape photography on my Canon 7D. Luckily, I happened across this little gem on Amazon. It's cheaper, lighter and more compact than a dedicated lens, but is it worth buying?
Below is a list of PROS, CONS and TIPS about this lens adapter. Hopefully this review helps you decide.
* No Vignetting - On my Canon EF 28mm F/1.8 USM prime lens, I have zero vignetting. This was my number one concern when I rolled the dice and purchased the .45x. According to most reviewers on these adapters, anything zoomed higher than 21mm is vignette free.
* Macro - half of the assembly is a macro lens. This lens can be used with out the wide angle part.
* Compact Size - small enough to easily stow in my camera bag.
* Light Weight - lighter than say the "built like a tank" Tokina 11-16mm f/2.8 I used to own.
* Lens Coating - there appears to be an anti-reflective or anti-glare coating on it. I have not experienced any uncontrollable flares. It may or may not hold up against scratches, but I plan on babying it like the rest of my lenses.
* Threading - the wide angle piece has a 62mm outer threading so you will be able to use a lens cap or filters with it. (ND, Polarized, UV, etc..). I suppose you could use a regular 58mm filter if you screwed it on the lens before screwing in the Zeikos .45x. this would sandwich it in between the lens and the adapter. But, more glass means degraded image quality.
* No Light Loss - unlike using macro extension tubes, this filter will not rob your camera of light.
* Auto Focus Works - the auto focus on my lens does not seem to be effected at all.
* Very Little Distortion - closer objects will fisheye a little, but nothing worth worrying about. Landscape images barely show it, just mind where you place the horizon in the frame. And if it really bugs you, you can adjust the barreling in post.
* Lens Hood - no way to attach a lens hood. I just end up using my hand when needed.
* Soft Edges - if you shoot in larger apertures, the edges seem softer or out of focused compared to the middle.
* Actual Magnification - my math says this .45x adapter turns my 28mm f/1.8 lens into a 13mm. It clearly does not. My best guess would be a .6x magnification, which would make it a 17mm. BUT, the Canon 7D is a 1.6x crop, so in full frame terms, this really becomes a 27mm. AHHH! Whatever!!!! It's wider than what I could shoot before. So, I'm happy. :)
* Macro - Depth of field becomes even shallower on whatever lens you are using the Macro ring on, so if you are planning on shooting handheld, have a lot of light, a flash and a tripod available. It will make getting the shot a lot easier. Closing down your aperture to F/5.6 or more helps too.
* Soft Edges - I did some tests using a tripod, strobes and a test chart. Here's what I found: F/1.8 to 2.5 gave a creamy amount of blur on the outer edges of the image. F/2.8 to 4.5 were good enough. F/5.6 to 11 were sharp. F/16-22 are razor sharp.
* Chromatic Aberration (CA) - the better your lens, the less CA you will have. I shoot with prime lenses which generally have less glass elements than zoom lenses. This typically means less CA. Once you hit f/6.3 or higher, CA goes away.
With all that being said, is it worth the cost of a 4 Starbuck's coffees? Totally!!! If you are planning on using this for fun, travel or just whatever, you will be happily surprised. If you are a pro photographer in need of a tack sharp ultrawide, up your budget. I would recommend the Rokinon 14mm, Tokina 11-16mm or Canon 10-22mm.
Thanks for taking the time to read my ramblings. Hopefully they have helped your buying decision. If you have any comments or questions, feel free to write them in the comments section below. Cheers! :)