New to forum, but not to photography. Been into pics since grade school, which was back in the 50s. Used a Speed Graphic to take PICS for my HS newspaper in the early 60's. Between school and family, house etc. never had a lot of extra cash to invest in cameras and equipment, until they got a little older and I was able to buy used. Took a Petri 35MM to Vietnam then when I came home upgraded to a used Nikon F1 them went to a Coolpix 5700 when they came out, was into digital but found out when the Grand-kids came along that when I clicked the shutter they were already across the yard. The first quality camera I bought used was a D200 that I still have, the first new one was a Nikon D300. Paid more for that than the vehicle I was driving. I still shoot the D200, the D300 and a D7000. In all those years I always wanted a Sunpac 611 flash or a similar Sunpac. Had the opportunity to use a friends well over 35 yrs ago on the F1, and really liked the results but couldn't come up with the extra money to buy one new. Now they are all over the place at low prices. I fully understand that they are old technology and newer and better choices are out there. I have read that the trigger voltage on these old flashes are high and could damage the electronics of the newer digital, I was wondering if there was an isolator that would prevent the trigger voltage from damaging a newer camera. Any help would be appreciated, the Sunpack is like a bucket list item..

Good article on DPS by Andrew S. Gibson about this subject.
(not posting a link here because the knee-jerk reaction from Admin would be to move this post to the links section or to the attic).

Note in my title I say STATIC focusing. Gibson did not differentiate static from dynamic focus in his article so I'm doing it here.

He cites 3 reasons for superiority of Mirrorless over DSLR for static focusing (below is not a copy this is my interpretation of the article):

(1) Direct focusing on the sensor. Lower complexity, no calibration or fine focus adjustments or adjustments for different lenses, are ever needed.

(2) Better manual focus tools. On DSLR's manual focus aids like split prism screens are a thing of the past. The little arrows aren't much help. Mirrorless cameras offer better manual focus tools; Focus peaking or image magnifying functions, viewable through the electronic viewfinder (ELF), which greatly aid in achieving sharp manual focus.

(3) Ability to display additional information like a Hyperfocal distance tool which displays information directly in the ELF.

All of the above rely on the ELF which shows exactly what the sensor is recording. DSLRs do not have an ELF. Some people still violently prefer seeing the scene through glass rather than a picture of a picture. However ELF's over many advantages over optical. Maybe in the future someone will offer a DSLR with a "live view" functions that is visible through the optical eyepiece and switchable from optical to live view.