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Troubleshooting 300mm f/4 PF
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<blockquote data-quote="hark" data-source="post: 692113" data-attributes="member: 13196"><p>The teleconverter is only 1-stop loss of light. The largest aperture is f/5.6 with the teleconverter. But apparently I didn't explain this well enough. </p><p></p><p>When the camera is set for BBF with the shutter button only actuating the shutter, the AF is snappy (quick and locks successfully). Press that back button, and the AF engages quickly. However, when I'm in Aperture Priority, the shutter button is set to both AF as well as actuate the shutter. Press the shutter button halfway, and the AF struggled. The lens focused to its end then didn't move. No AF lock was achieved. Just a blurry view inside the viewfinder. The only difference was the button used for autofocusing. What could possibly make it do that? <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite5" alt=":confused:" title="Confused :confused:" loading="lazy" data-shortname=":confused:" /></p></blockquote><p></p>
[QUOTE="hark, post: 692113, member: 13196"] The teleconverter is only 1-stop loss of light. The largest aperture is f/5.6 with the teleconverter. But apparently I didn't explain this well enough. When the camera is set for BBF with the shutter button only actuating the shutter, the AF is snappy (quick and locks successfully). Press that back button, and the AF engages quickly. However, when I'm in Aperture Priority, the shutter button is set to both AF as well as actuate the shutter. Press the shutter button halfway, and the AF struggled. The lens focused to its end then didn't move. No AF lock was achieved. Just a blurry view inside the viewfinder. The only difference was the button used for autofocusing. What could possibly make it do that? :confused: [/QUOTE]
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Troubleshooting 300mm f/4 PF
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