5. This is a known issue with the EF 50mm f/1.4. The most common cause of the problem is that the guide slots at the end of the focus collar inside the lens have become bent. The most likely cause for the bent collar is an impact to the lens, such as being dropped, when the focus is set to a short distance.

有园形光圈叶片. Canon EF 50mm F/1.4 USM. Canon RF 50mm f/1.8 STM. 类似於光圈叶片的数量，园形刀片影响光线通至感光器上的方式。. 园形刀片，往往只有更昂贵的镜头用上，改善失焦区域的外观。. 这可以让您的照片看起来更好、更柔和的背景虚化。.

With full-time manual focus, you can move the focus ring whilst it is in AF (autofocus) mode. This means that you can make manual adjustments once the AF has finished, without changing to manual mode. has a silent focus motor built into the lens. Canon EF 50mm F/1.8 II. Canon EF 85mm F/1.2L II USM. minimum focus distance. 0.45m. 0.95m. Canon EOS R + RF50mm F1.2 L USM @ 50mm, ISO 100, 1/160, f/7.1. In manual focus, the Canon RF 50mm f/1.2L offers an impressive performance. The manual focus ring is large and offers what is, to me, ideal resistance and smoothness of adjustments. Note that the Ring-USM found on this lens is a focus-by-wire design, which means that the manual
Tiene enfoque manual a tiempo completo. Canon EF 50mm F/1.4 USM. Canon EF 50mm F/1.8 STM. Con el enfoque manual, puedes mover el anillo de enfoque mientras el enfoque automático (AF) está activado. Esto significa que puede ajustar manualmente el resultado del enfoque automático sin cambiar al modo manual.
Canon EOS Rebel T7 Canon EF 75-300mm f/4.0-5.6 III Canon EF-S 18-55mm f/3.5-5.6 IS II Sigma 150-600mm F5-6.3 | C Canon EF 50mm F1.8 STM Reply Reply with quote Reply to thread Complain
Can focus to infinity. Canon EF 50mm F/1.4 USM. Nikon AF Nikkor 50mm F/1.4D. Many lenses allow you to focus to infinity. This is essential when you wish to take photos including far off objects, such as when shooting landscapes, in order to make sure everything is sharp and in focus. Has focus motor.
Canon EF50mm F1.4 USM. Canon EFマウント 1993/06/01発売. CanonのEF50mmといえば、EF50mm F1.8 STMを思い浮かべる人が多いかと思います。しかし、いざ、EF50mm F1.8を購入しようとネット検索すると同じく息の長いEF50mm F1.4 USMというレンズが見つかります。 The 1.8 is popular because it is extremely cheap for a Canon lens. Personally, I thought the money I spent upgrading to 1.4 was well worth it. It’s much sharper wide open, the corners are sharper in general, and the better build and focus ring are worth the cost difference to me. Others are totally happy with the 1.8. r83QBl.
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    • canon ef 50mm f1 4 usm vs f1 8