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<blockquote data-quote="spb_stan" data-source="post: 680077" data-attributes="member: 43545">That slow writing to the card is not uncommon and primarily due to unprotected contacts that can partially work but only with many retries so the camera does not trigger a fault routine, as &quot;it thinks&quot; the card is good but high resistance contacts fail to transfer the data correctly so it retries and keeps retrying. I use a little bit of deoxidation treatment periodically on my SD cards used in the D700 and the backcard in the D800. I have had 4 sessions hurt by card failings but always had another camera.&nbsp; My biggest contact problem with oxidation or wear is my grip to body multi-pin connector. After so much use, daily it might be time to retire the Chinese grip that has served so well since the D800 came out. About the best $75 I invested in accessories. While the second slot missing would not be a concern there are two issues with the Z7 that would not be welcome, no grip duplication of controls for vertical holding. No shutter release, no second&nbsp; AF-On button and fastest flash sync is 1/200. That was probably lowered from 250 because the Z7 has a ISO setting of 35 so you can get by without a ND filter to get down to 1/200 in a bright scene or when trying to create a low key shot in a normal room ambiance level.&nbsp; The low ISO extended range is actually more useful than the normal Nikon 1/200 1/320 sync speed.</blockquote>

[QUOTE="spb_stan, post: 680077, member: 43545"] That slow writing to the card is not uncommon and primarily due to unprotected contacts that can partially work but only with many retries so the camera does not trigger a fault routine, as "it thinks" the card is good but high resistance contacts fail to transfer the data correctly so it retries and keeps retrying. I use a little bit of deoxidation treatment periodically on my SD cards used in the D700 and the backcard in the D800. I have had 4 sessions hurt by card failings but always had another camera. My biggest contact problem with oxidation or wear is my grip to body multi-pin connector. After so much use, daily it might be time to retire the Chinese grip that has served so well since the D800 came out. About the best $75 I invested in accessories. While the second slot missing would not be a concern there are two issues with the Z7 that would not be welcome, no grip duplication of controls for vertical holding. No shutter release, no second AF-On button and fastest flash sync is 1/200. That was probably lowered from 250 because the Z7 has a ISO setting of 35 so you can get by without a ND filter to get down to 1/200 in a bright scene or when trying to create a low key shot in a normal room ambiance level. The low ISO extended range is actually more useful than the normal Nikon 1/200 1/320 sync speed. [/QUOTE]

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