Rokinon lens metadata: My new Rokinon 14mm lens was just delivered, and I think I like it! I just grabbed a few test shots around the apartment, and I have a couple of observations...

Bloke Loc: Waynesboro, Pennsylvania

My new Rokinon 14mm lens was just delivered, and I think I like it! I just grabbed a few test shots around the apartment, and I have a couple of observations...

Focus is a bit touchy in poor light anyway, because about 90% of the focus motion is less than 1 metre. Between that 1 metre and infinity is about 10 degrees of turn.

My question involves the metadata, though. I have smart collections set up in LR to collect all photographs taken with a given camera, and also with a given lens. For some reason, this lens doesn't know this... The lens is not displayed in metadata at all, and the focal length is displayed as 50mm. I know the lens is fully manual, and I suppose that 50mm is just the default "huh... What lens?" value.

Is there any way I can *force* this to display something else? I just want to keep my sorting straight...

My fuzzy room-mate...

(Download)

jayd Loc: Central Florida, East coast

I'll respond to this just so that I can be copied on it also because I own the same lens love the lens same issue with metadata

lsimpkins Loc: SE Pennsylvania

Try LensTagger and EXIF Tool. They are free downloads and work as Plug-in Extras in LR. If I recall correctly, instructions are on the website of the software creator.

rmalarz Loc: Tempe, Arizona

Bloke wrote:

My new Rokinon 14mm lens was just delivered, and I... (show quote)

Does your Canon camera have the facility to manually input lens data? I'm not trying to do a comparison here, but my D700 has the capability of letting me input non CPU lens data, focal length, f-stop, etc.

The only thing I have to do afterwards is remember to (1) set the non CPU lens data and (2) which number in the catalog is associated with that particular lens.

See if your camera will allow you to set non CPU lenses.
--Bob

Bloke Loc: Waynesboro, Pennsylvania

rmalarz wrote:

Does your Canon camera have the facility to manually input lens data? I'm not trying to do a comparison here, but my D700 has the capability of letting me input non CPU lens data, focal length, f-stop, etc.

The only thing I have to do afterwards is remember to (1) set the non CPU lens data and (2) which number in the catalog is associated with that particular lens.

See if your camera will allow you to set non CPU lenses.
--Bob

I don't see it in the menus... Just learning this camera, though, so there may be something in one of the books about that. It will mostly be used on the 5DII, since I have other wide-angle options for use on the crop cameras.

Peterff Loc: O'er The Hills and Far Away, in Themyscira.

Bloke wrote:

My new Rokinon 14mm lens was just delivered, and I... (show quote)

Does the lens have a chip on it that communicates with the camera? If so, they can often be programmed to give minimal data, such as focal length and max aperture, although typically not actual aperture used for a manual lens. This and other stuff can be applied to the exif data after the fact, but I'm not sure that it is worth it. Perhaps you can create your own profile for the lens that will set the appropriate things on import.

I have some adapted Canon FL/FD lenses with chips and with the chip my FL 55mm f/1.2 shows up as a 55mm f/1.2 lens for example, although any other detail has to be added manually to the EXIF data if desired.

Good luck.

Bloke Loc: Waynesboro, Pennsylvania

lsimpkins wrote:

Try LensTagger and EXIF Tool. They are free downloads and work as Plug-in Extras in LR. If I recall correctly, instructions are on the website of the software creator.

Thanks. I just installed them, and followed through the instructions, but I get an "error 1 failed to run command" when I try to actually run it. I left a question on his website, but I don't know if he actually checks those. Plus, it will be close to 11PM in Germany now.

Bloke Loc: Waynesboro, Pennsylvania

Peterff wrote:

Does the lens have a chip on it that communicates ... (show quote)

Thanks. I don't think this lens communicates at all; pretty sure it is all just purely manual.

None of this is exactly earth-shattering, of course. It will be a shame if I can't get it to work, since I have everything else sorting nicely. I will mainly be using this with my newly-acquired 5DII for landscape stuff, since my 10-18mm is even wider on the crop sensors.

Might also be using it for astro stuff too, since I also upgraded to a camranger, which may let me get critical focus better - and will certainly help me not freeze to death while I am doing it!

Peterff Loc: O'er The Hills and Far Away, in Themyscira.

Bloke wrote:

Thanks. I don't think this lens communicates at a... (show quote)

I have a Samyang 8mm fisheye (sold under Rokinon, Vivtar and other brands, equivalent to a 12mm FOV on FF) without a chip. I don't need focus confirmation which is useful on the FL 55mm f/1.2 or FDn 135mm f/2.0, so I thought about chipping it and decided it wasn't worth the trouble. I know which lens it is, and can annotate images if needed.

Good luck, and have fun!

rgrenaderphoto Loc: Hollywood, CA

These Korean lenses are 100% manual. Who is the Fuzzkid in the image?

rpavich Loc: West Virginia

True. This lens doesn't communicate it's meta data. I THINK you can buy a chip for it and just tack it on the lens mount, I can't remember, it's been so long since I had one and did it myself.

Peterff Loc: O'er The Hills and Far Away, in Themyscira.

rpavich wrote:

True. This lens doesn't communicate it's meta data. I THINK you can buy a chip for it and just tack it on the lens mount, I can't remember, it's been so long since I had one and did it myself.

It can be done, the value is debatable in my personal opinion. I have a number of converted FL/FD lenses with chips. The most useful thing is the focus confirmation with wide aperture lenses like a 55mm f/1.2 or 135mm f/2.0. Not really needed with an ultrawide / fisheye.

What's left of my brain generally reminds me of which lens I used, but the chipped ones do pass the basic focal length max aperture info through to identify the lens.

SharpShooter Loc: NorCal

Bloke, never had your problem or worried about it, even with my manual lenses.
BUT, I know that the mkll allows you to manually input a serial number and possibly lens stats when you do a micro-focus adjust when the canera does not recognize a lens. I have no idea if the camera will even recognize that it has a lens at all on it. Does the lens have any type of contacts at all, I don't mean a chip, just contacts?
If so, it must be communicating something.
Micro adjust(MA) is for AF, so might not even do anything there. But it's a possibility. It won't MA but may take some input! Worth a look. Good luck. ;-)
SS

Bloke Loc: Waynesboro, Pennsylvania

rgrenaderphoto wrote:

These Korean lenses are 100% manual. Who is the Fuzzkid in the image?

That's my mate Scotty. He lets me share his apartment...

Bloke Loc: Waynesboro, Pennsylvania

SharpShooter wrote:

Bloke, never had your problem or worried about it,... (show quote)

No, there aren't any contacts. I wouldn't be bothered if there were some way to just manually type in a couple of fields. I have actually changed the file naming, so that I can see at a glance which camera took which image, but I like to sort by lens too. I suppose I could keyword the images... Hmmm, not a bad idea, at that!