5) And a closing summary:
Praise flying spaghetti monster as i am cured... @TimG aka "The Voice of Reason" (this should be your new official title) wins ![]()
After a week of digging around and crunching numbers, I came to the conclusion that for now, any upgrade to FF is simply not worth it. Any image quality increase comes with huge cost and weight increase. And the only way to have significant quality increase is to go for not-so-entry-anymore bodies where costs skyrocket.
At this point this stops making sense and might as well go for dSLR - seem to have both better quality, much bigger lenses ecosystem (including fisheye) and on occasion even weight less, not to mention can cost half of what a corresponding FF system (with top tier body).
In other words, FF might or might not be the future, time will tell, but its not there yet technologically it seems. And once we factor in the cost, it becomes a rather questionable choice. The only exception could be Canon - the R5 seems to be getting real praise and their lens ecosystem is also huge (only FF with fisheye it seems). But that is nowhere near an entry level camera, with a significant price tag.
And yes, weight does play a huge role for me - while it might be less relevant in the US/Canada, as it seems luggage is both cheaper and often operated on the piece (rather than weight) concept, Europe is going to hell. So to give you an example based on Singapore Airlines - extra 1x 23kg in Economy class in long haul costs 280 USD in piece concept. Or 42 USD per kg in weight concept. So 23 x 42 = 966 USD for any non US/Canadian route.
Before we had high prices but great service. Then crappy service but low prices. Now we have the worst of both worlds - high prices and crappy service. And this translates to luggage - (from recent experience trying to book a flight to Indonesia from mainland Europe) more and more airlines think that 25 (or even 23) kg is enough for long haul, or remove checked luggage altogether in some idiotic "economy light" classes. Similarly hand luggage is often limited to 1 piece/7kg. And i am talking about major airlines here. So good luck stuffing your dive gear and camera, not to mention such silly things like clothes. And those few extra kilos will often cost you few hundred EUR extra minimum, sometimes so much that it is cheaper to book another ticket than pay for the extra weight. And it is only going to get worse I fear.
Also another interesting discussion has developed, with some very interesting comments on the subject so linking it here purely due to a related subject:
https://wetpixel.com/forums/index.php?/topic/69437-mirrorless-cameras-opportunity-or-necessary-evil/
There are also new lenses coming for M4/3 system, possibly including 100-150mm macro. I have been also looking into the Olympus side following the feedback of @ChrisRoss , @hyp and @Davide DB (somehow ended up on Panasonic one without any particular reason), and perhaps this could be something to try instead of the whole FF thing - grab a EM1 M2/M3 body and see how it goes. OM1 looks amazing, but as its "latest and greatest" there is rather little chance of getting body or housing 2nd hand, meaning a significanly higher cost at this point. But lets see how it goes, I am not in any rush ![]()
On a side note i just hate Olympus naming, all those Olympus O-MD E-M1 Mark III like names literally make half of search engines barf. All those lovely dashes, marks, numerals, and then lets name a newest camera the same as our 50 year old one that litters half of internets ![]()
Thank you all for the feedback though and sorry for the wall of text