A few more...
This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.
You can bend that piece back a couple of times and then you have to replace the barrel. It's easier to just always leave the hood on and to develop the habit of just setting the focus to past infinity when you stow the lens.
Also worth noting is that for as deep in as you dug, you're not that much further from being able to replace the focus motor and gear train assembly (it's all one part). The motor burns out and the gears can tear up.
The Ballad of Brave Sir Fifty
Bravely bold Sir Fifty rode forth from Calumet
He was not afraid to die, O brave Sir Fifty!
He was not at all afraid to be killed in nasty ways,
Brave, brave, brave, brave Sir Fifty!
He was not in the least bit scared to filled with fungal growth,
Or to have his aperture fail, and his blades broken;
To have his casing split, and his motor burned away;
And his gears all hacked and mangled, brave Sir Fifty!
His threads smashed in and his barrel torn out
And his switches popped off and his ribbons unplugged
And his electronics scraped and his mount fall off
And his primary--
I'm looking for a good lens review website.
One site that I really like is DPReview (http://www.dpreview.com/lensreviews?sort=brand), in particular their sharpness charts (example: http://www.dpreview.com/lensreviews/canon_100_2p8_is_usm_c16/4). However, they have a very limited database, only 11 Canon lenses as of now.
I also like The Digital Picture (http://www.the-digital-picture.com/Reviews/Canon-Lens-Reviews.aspx) and Ken Rockwell (http://www.kenrockwell.com/canon/lenses/), but they tend to be more on the subjective side of reviews: not a lot of numbers and charts to compare across. Nothing wrong with that, but not exactly what I'm looking for.
DxOMark (http://www.dxomark.com/index.php/Lenses/Camera-Lens-Ratings) has a pretty extensive database, and although some of their reviews can be very controversial here, I have no reason to believe they are not doing a proper job. However, I find most of their charts using colors instead of lines and numbers difficult to compare objectively. Also, sometimes I don't understand their testing criteria.
For instance, the 85/1.8 vs. the 100/2 on the 5DIII: http://www.dxomark.com/index.php/Lenses/Compare-Camera-Lenses/Compare-lenses/%28lens1%29/241/%28brand%29/Canon/%28camera1%29/0/%28lens2%29/798/%28brand2%29/Canon/%28camera2%29/0
The 85 is sharper (15 vs 14), has better transmission (2 vs 2.2) and less aberration (3 vs 5). The 100 has slightly less distortion (0.3% vs 0.4%) and vignetting (1.4 vs 1.6). Pretty similar numbers, I'd say. Yet, the 100 has a score of 30 while the 85 gets only 26. And I don't understand why they always seem to say that all lenses are best wide open ("Best at f=100mm & f/2", "Best at f=85mm & f/1.8")
Another example, Sigma 18-35/1.8 vs. Sigma 35/1.4 on the 7D: http://www.dxomark.com/index.php/Lenses/Compare-Camera-Lenses/Compare-lenses/%28lens1%29/1141/%28lens2%29/1056/%28brand1%29/Sigma/%28camera1%29/0/%28brand2%29/Sigma/%28camera2%29/619
The 35 has better transmission (1.6 vs 1.8 ), distortion (0.2% vs 0.3%), vignetting (0.8 vs 1.1), and aberration (5 vs 7). The 18-35 is only slightly sharper (13 vs 12), yet the 18-35 has a score of 24 and the 35 only 22. I don't understand their numbers.
Also, highly regarded lenses, like the EF-S 10-22 or the 16-35/2.8L, have some relatively poor numbers on DxOMark.
My ideal site would be like DPReview with a database the size of DxOMark :-) What do you recommend?
This was recently shot on a 6d I'm pretty sure it's a memory card failure but still First time this has happened so I'm trying not to have a panic attack
Sorry...I don't really mean that about DxOMark. But I ran across that graphic earlier (it came up in a google search for 'D800 blurry images') and I was just itching to post it. To reiterate my viewpoint on DxOMark, their Measurements are valid and useful. But their Scores...are analgous to fire hydrants for pooches.
Thanks for sharing that image!
I am sure that their scores match what the rating criteria is..... The problem is that very few people will agree as to how important each item should be and how it is weighted in the criteria. This is why any attempt to rate a complex system for diverse users with diverse needs is doomed to failure.
It a lot like saying "what's the best camera", and if you rate money as no object and I rate it as by far the most important, you pick a 1DX and I end up with a powershot....
Or we meet in the middle and just buy a 7D to appease everyone?
I just took the plunge and ordered myself the new 70d upgrading from a 450d. I also bought the EF 35mm f/2 (not the new one with IS) because I wanted a fast prime for general shooting to replace the 18-55mm kit lens that came with the 450d.
I am an outdoors person so I love to shoot landscapes so I have been looking for a good wide angle prime for this. After having the EF 35mm for a while, I would like to get a wide angle prime lens over a zoom. The wide aperture for shooting in low light or nighttime situations and the great amount of control over the depth of field. I don't need the flexibility of a zoom (however I am open to zoom recommendations) as landscapes are more about composition than framing (and you can always crop it later if you want). I am leaning away from a fisheye lens because of their distortion and if I were to use one I would end up correcting every image anyway. I would also like something that I could throw a rectangular ND Grad on for certain situations
Here is what I have found so far in my budget (<$700)
- Rokinon 16mm f/2.0. Its a new lens so their aren't any reviews out yet but it's very simple. Manual focus, manual aperature and APS-C only. http://www.bhphotovideo.com/c/product/981706-REG/rokinon_16m_c_16mm_f2_0_ultra_wide_angle.html
- Canon EF 20mm f/2.8. This is about as tight as I would like to go for a wide angle lens otherwise this looks like a good pick. http://www.bhphotovideo.com/c/product/12082-USA/Canon_2509A003_Super_Wide_Angle_EF.html
- Rokinon 14mm f/2.8 The only thing I don't like about this lens is that it doesn't have any filter threads http://www.bhphotovideo.com/c/product/769532-REG/Rokinon_FE14M_C_14mm_Ultra_Wide_Angle_f_2_8.html
Right now i'm not sure what to go with. There doesn't seem to be very many options in the segment. I can't be the only one with this problem.