Sony A7R IV A7RIV oddness...

[Uncle Kevriano]

Just recently I've noticed a couple of oddities or misbehaviours on my now 36 month old A7RIV, in as much as it no longer goes into sleep mode after it's set time of one minute, it just stays on, eating the battery, and for certain the AF system is really playing up, hunting an awful lot more than it ever has, and I have changed nothing at all (save for not have my hot shoe cover on as I am swapping between using a flash and not quite a bit) Now I have considered doing a full reset to see if it helps, but I'm just wondering if anyone else has had similar issues in the past.
It's getting so bad I am seriously thinking of jumping ship to the Olympus OM-1, because the images I'm seeing are mega impressive.

 

[Paul stuart]

I'm not going to argue with you. Believe what you like. Not sure why you call my comparisons nonsense, they're one-to one size comparisons. And the Tamron doesn't cover both ranges, it can't get to 800mm. I spent years in the M-4/3 world and am familiar with both formats. I owned PL form the 8-18 all the way to 100-400, including the 50-200.

This was made with a G9 and PL100-400 at full extension and is cropped. If you really want to see what they're capable of, go to the M-4/3 forum and look at real world examples.

P1049504 by telecast, on Flickr

still only ok, looks like the sky has blotchy artifacts so not the best example if truthful ,i used m43 since the g1 panasonic and over 100000 +images problem is to match m43 reach, with sony it has to either crop sensor ,which is the best way or to get like for like image of a 100-400mm 5.6 -6.3 on m43 sony needs to make a 200-800mm f11-f13 zoom which i doubt would sell to well although canon make a 800mm f11 for their rf cameras ,to get 800mm on sony in full frame you need to use crop mode or t/c on the 200-600 400mm f2.8 x2 or 600 mm f4 or the 100-400mm sony with x2 , The tamron 50-400mm is comparable to the pl 100-400mm because they are both the same f/l put a tamron 50-400mm on m43 and voila you have a 800mm fl,just that the tamron on f/f gathers twice the light or 4 x the surface area of light collected on full frame but half the reach on full sensor,its all about signal going in , that makes full frame have an advantage .