Canon EF 400mm f/4 DO IS II USM
- By wopbv4
- Canon EF Prime Lenses
- 115 Replies
1DX, ISO 200, 1/250, F11, 1.4X, EX600RT
The Canon EOS-1D X has been further discounted, this time by another $700, to bring the price down to $4599 from authorized dealers. I think it’s safe to say that we should be seeing an announcement for a replacement sooner than later.</p>
<p class="fs16 OpenSans-600-normal upper product-highlights-header">PRODUCT HIGHLIGHTS</p>
<ul class="top-section-list" data-selenium="highlightList">
<li class="top-section-list-item">18.1 MP Full-Frame CMOS Sensor</li>
<li class="top-section-list-item">Dual DIGIC 5+ Image Processors</li>
<li class="top-section-list-item">3.2″ 1.04m-Dot ClearView II LCD Monitor</li>
<li class="top-section-list-item">Full HD 1080p Video Recording at 30 fps</li>
<li class="top-section-list-item">61-Point High Density Reticular AF</li>
<li class="top-section-list-item">Native ISO 51200, Extended to ISO 204800</li>
<li class="top-section-list-item">12 fps RAW+JPEG Shooting, 14 fps in JPEG</li>
<li class="top-section-list-item">100k-Pixel RGB Metering Sensor & EOS iSA</li>
<li class="top-section-list-item">Magnesium Alloy Body, Dual CF Card Slots</li>
<li class="top-section-list-item">1000BASE-TX Gigabit Ethernet Terminal</li>
</ul>
<p><strong>Canon EOS-1D X Body $4599: <a href="http://www.bhphotovideo.com/c/product/827036-REG/Canon_5253B002_EOS_1D_X_EOS_Digital.html/BI/2466/KBID/3296/DFF/d10-v21-t1-x350180" target="_blank">B&H Photo</a> | <a href="http://www.adorama.com/ICA1DX.html?utm_term=3S7yV00bURGwzicUIJS-nRd9UkXwkVV9rSNbw00&utm_medium=Affiliate&utm_campaign=Other&utm_source=rflaid64393&cvosrc=affiliate.64393" target="_blank">Adorama</a></strong></p>
Infrared Hummingbird by Joseph Calev, on FlickrThe optical formula for a new EF 50mm f/1.4 has appeared. It looks like the lens has internal focus and an odd negative front element. We haven’t heard anything for a while about a new 50mm f/1.4, but it’s definitely needed.</p>
<p>Patent Publication No. 2015-138121</p>
<ul>
<li>Published 2015.7.30</li>
<li>Filing date 2014.1.22</li>
</ul>
<p>Example 1</p>
<ul>
<li>Focal length 49.10</li>
<li>F number 1.45</li>
<li>Half angle (in degrees) 23.78</li>
<li>Image height 21.64</li>
<li>Overall length of the lens 100.16</li>
<li>BF 38.10</li>
</ul>
<p>Canon patents</p>
<ul>
<li>Positive ShiboTadashi</li>
<li>Inner focus (part of the first group)</li>
</ul>
Roger at LensRentals.com has completed his initial testing of the Sigma 24-35mm f/2 Art series lens and has come away pretty impressed.</p>
<p>From LensRentals.com:</p>
<blockquote><p>Some people are going to be a bit disappointed (I admit I am a bit myself) because they really wanted a zoom that was every bit as good as their prime lenses. What we actually have is a zoom that’s as good at f/2.0 in the center as their prime lenses, but like almost every other zoom isn’t quite as good as a prime off-axis. When even the best optical engineers (and lately Sigma seems to have some of the best optical engineers) design a wide-aperture zoom lens, some compromises have to be made. In this case there’s a lot of astigmatism away from center. There’s good news for you who are disappointed now: Computer image analysis (like Imatest and DxO) don’t show astigmatism directly so this lens will probably look better with those test results than it does on the optical bench. <a href="http://www.lensrentals.com/blog/2015/07/a-quick-look-at-the-new-sigma-24-35-f2-art" target="_blank">Read the full article</a></p></blockquote>
<p><strong>In Stock: <a href="http://www.bhphotovideo.com/c/product/1162798-REG/sigma_24_35mm_f_2_dg_hsm.html/BI/2466/KBID/3296" target="_blank">Sigma 24-35mm f/2 Art at B&H Photo</a></strong></p>