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5 votes
Accepted

Why does the Fujifilm GX617 have so many electrical contacts?

I have an original sales brochure for the GX617, and this is explained in the brochure. Lens/Body connection There are six electric connectors, which comprise 2 banks of 3 connectors each. If one ...
osullic's user avatar
  • 12.6k
5 votes

Why has no phone manufacturer tried a lens turret system yet?

A few points why not: having such device involve sealing rotating part of phone which is not very easy and manufacturers try to minimize such details to make smooth rotation manufacturers need to add ...
Romeo Ninov's user avatar
  • 12.2k
4 votes
Accepted

What type of mount is this Soligor lens?

It is Rollei QBM (Quick Bayonet Mount) mount first introduced in 1970. This bayonet mount was used on all Rollei's 35mm SLRs, and on most of the Voigtländer VSL models. It is possible to buy a Rollei ...
Mike Sowsun's user avatar
  • 12.3k
3 votes

Is a Yongnuo 50mm f/1.8f F-mount lens compatible with Nikon F55 or Nikon F80 film SLRs?

Without actually having tried, I would assume no issues at all. Your Yongnuo lens is comparable (from a technical viewpoint) with the Nikon AF-S series of lenses and these are fully compatible with ...
jarnbjo's user avatar
  • 3,300
3 votes

Why has no phone manufacturer tried a lens turret system yet?

To add to the excellent reasons already stated: modern phone cameras are a very long way from your simple "open shutter, read one frame from sensor, write data from that one frame to a JPEG file&...
Philip Kendall's user avatar
3 votes
Accepted

Can RF-S lenses mount on Canon EOS C70?

According to https://www.canon-europe.com/pro/infobank/rf-mount/ The RF mount on an RF-S lens is identical to the mount on all RF lenses, and RF-S lenses are compatible with all EOS R System cameras. ...
juhist's user avatar
  • 6,825
2 votes

What mount is this 1.5 inch Taylor & Hobson Super Comat f1.9 16mm movie lens?

All my 1.5 F/1.9 lenses are D mount.
Theodore Bundy's user avatar
2 votes
Accepted

Is this a Minolta SR mount?

I think this might be a Yashica/Contax mount. It doesn't have the bite out of the correct side of the flange to be an SR. It doesn't have ears so it's probably not F. It's actually a bayonet so it's ...
davolfman's user avatar
  • 466
2 votes
Accepted

What to look for when renting a lens for the solar eclispe

Here is the moon taken with a 400mm (Sigma 120-400mm) with a 1.4 extender (so 560mm total) on an APS-C camera (Canon 70D). This is the complete image, no cropping (just scaling), so you can see how ...
xenoid's user avatar
  • 21.5k
2 votes

Why has no phone manufacturer tried a lens turret system yet?

Users don't want this. Users want simplicity. Manufacturers don't want this. Manufacturers don't want complex mechanisms, they want electronic/software solutions where possible. You are thinking like ...
osullic's user avatar
  • 12.6k
1 vote

Can I mount a EF-M lens onto a C/CS-mount camera?

I own a mokose uc70 usb camera and have bought a foldio adapter ring to fit an old EF 28-70 from 1995 and it works. Aperture is manual on adapter and focus / zoom is manual on lens...
Ben's user avatar
  • 11

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