Can You Get Stronger Camera Diopter

How to know what dioptric adjustment lens to become?

Jun 10, 2019

I did try to do a search only am new to this forum, then did not seem to find exactly what I'm asking...

So, if I'm new to needing glasses for distance, and glasses in full general really bated from readers. I am fine using my readers to read the info on the LCD screen. But, my concern is how to run into through the viewfinder? Aside from information technology certainly beingness smaller than what I view thru my picture SLR, it I'm finding my eyesight to exist worse at present and tin't run across what's in the viewfinder much at all.

I did notice a post here where someone answered that the "distance" of what is in the viewfinder is 30 to 40 inches. So, if one of my old one.five drug store readers works to come across something that far abroad for me, does that mean I should get a -2 dioptric aligning lens? I have already asked my opthamologist for aid and they just simply don't know enough nearly the dioptric lenses to assist with this. And I take not constitute the info online really...it's taken me ii months of research to figure out I want the negative not the positive diopter finally. At least I think that'due south right!?

[I don't really employ spectacles for full general viewing of things in the distance, like a landscape. But, I exercise need them to see details close up. And of course, I do need them for something similar seeing a PowerPoint presentation at a briefing (might be 30 feet away) but likewise for reading the onscreen TV Guide (might exist 12 anxiety away), seeing someone's face clearly down the hall, or if I needed to encounter details on someone'due south face up if they were sitting across from me. And at night to cut the glare of lights in the altitude.]

So, assistance if you lot can! I'd actually similar to be able to see thru the viewfinder!!

So, how do I know if I demand Canon Diopter -i, -2, or -3, -4? I empathise that these are NOT straight linked to the number on a prescription. Information technology says my right center is +two.25 Sphere with a slight nearsighted astigmatism of -.75. And the Add part says +2.25.

Thanks in advance for any assist!

golfhov • Forum Pro • Posts: 11,893

Improve or worse?

MollyMalone222 wrote:

I did endeavour to practice a search but am new to this forum, and then did not seem to discover exactly what I'm asking...

And then, if I'm new to needing glasses for altitude, and glasses in full general actually aside from readers. I am fine using my readers to read the info on the LCD screen. Only, my concern is how to see through the viewfinder? Aside from it certainly being smaller than what I view thru my film SLR, information technology I'm finding my eyesight to exist worse at present and tin can't see what's in the viewfinder much at all.

So you own a model now? Which ane?

I did discover a post hither where someone answered that the "distance" of what is in the viewfinder is 30 to 40 inches. So, if one of my old 1.5 drug shop readers works to see something that far away for me, does that mean I should get a -two dioptric adjustment lens? I take already asked my opthamologist for help and they just merely don't know enough about the dioptric lenses to aid with this. And I have non establish the info online really...it's taken me ii months of research to figure out I want the negative not the positive diopter finally. At least I call back that'south correct!?

[I don't really use spectacles for general viewing of things in the altitude, similar a landscape. But, I do need them to see details close up. And of course, I do need them for something like seeing a PowerPoint presentation at a briefing (might exist 30 feet away) but also for reading the onscreen TV Guide (might be 12 anxiety away), seeing someone'south face up clearly down the hall, or if I needed to run into details on someone's face if they were sitting across from me. And at night to cut the glare of lights in the distance.]

So, aid if you tin! I'd really similar to be able to run across thru the viewfinder!!

Then, how do I know if I need Catechism Diopter -i, -2, or -3, -4?

Uhhhh........don't you just plough the trivial wheel next to the finder back and forth until information technology is clear?

I understand that these are NOT directly linked to the number on a prescription. It says my right middle is +2.25 Sphere with a slight nearsighted astigmatism of -.75. And the Add part says +2.25.

Thanks in advance for any aid!

Panasonic LX10 Sony a7R II Sony a7 III Samyang 14mm F2.eight ED Every bit IF UMC Tamron SP lxx-200mm F/ii.8 Di VC USD +11 more

Re: How to know what dioptric adjustment lens to become?

In place of my reading glasses, I simply suit the diopter on the viewfinder. I don't need the spectacles and so.

Re: How to know what dioptric aligning lens to get?

BBbuilder467 wrote:

In place of my reading glasses, I only adjust the diopter on the viewfinder. I don't need the glasses then.

I just realized I should accept added that to my OP. I accept already adapted the internal diopter on my DSLR and I would need an additional dioptric aligning lens so that I wouldn't have to use spectacles. I am relatively new to needing glasses in general, but very new to needing glasses for distance, but the internal diopter is not sufficient.

Re: Better or worse?

In reply to golfhov • Jun eleven, 2019

Yes, I already have a dslr and information technology has an internal diopter that I take adjusted every bit far as it will go. I should have put that in my OP, but I can't edit it now that it has been approved.

DJ Photo • Regular Fellow member • Posts: 361

Re: How to know what dioptric adjustment lens to get?

Yes, you need -two or -3

pick -2 if you have a choice as there is less camera adjustment needed to go to 2.25

models with higher middle relief 21-24mm sllow glasses to be worn. Vs 12-15mm isnt enough to wear glasses and view through finder

this is an alternative many eye glass wearers cull. And then they can go out their glasses on

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DJ Photo • Regular Member • Posts: 361

Re: How to know what dioptric aligning lens to get?

E-3 is for shortsighted (myopia)

eg+ii is for farsighted -two or -3 then fine tune with in trunk diopter adjustment

-2 is closer so better

Panasonic Lumix DMC-TS2 Fujifilm FinePix X100 Nikon Coolpix AW100 Panasonic Lumix DMC-TS4 Panasonic Lumix DMC-G1 +26 more

Re: How to know what dioptric aligning lens to get?

In respond to DJ Photo • Jun 16, 2019

If I didn't say it, thank you!

Re: How to know what dioptric adjustment lens to become?

In reply to DJ Photo • Jun 16, 2019

models with higher centre relief 21-24mm sllow glasses to be worn. Vs 12-15mm isnt enough to wear glasses and view through finder

I'm sorry, I don't know who I've responded to (!). Only getting the hang of this forum equally I only only signed up this calendar week.

So, I call up I'yard articulate at present on picking the -2, but what does the above part hateful? I mean I know that you're maxim something about altitude of 21-24 mm vs 12-15 mm but where? or what is that associated with? Deplorable if that'due south something I should know?? Like is it the thickness of the lens? or the altitude the lens is from the viewfinder? or something else?

Thanks!

Re: How to know what dioptric aligning lens to become?

MollyMalone222 wrote:

So, if I'thousand new to needing spectacles for distance, and glasses in general really aside from readers. I am fine using my readers to read the info on the LCD screen. But, my business organisation is how to meet through the viewfinder? Aside from it certainly being smaller than what I view thru my picture SLR, it I'm finding my eyesight to be worse at present and tin can't see what's in the viewfinder much at all.

What kind of photographic camera is this? I assume from what you say below that information technology's a Canon model.

I did find a post here where someone answered that the "altitude" of what is in the viewfinder is 30 to 40 inches.

The "standard" distance is i meter (39 inches). That's the eye of your diopter wheel.

So, if i of my old 1.5 drug store readers works to see something that far away for me, does that mean I should get a -two dioptric adjustment lens?

Um, this doesn't compute. If you're and then nearsighted that the diopter wheel isn't enough (as stated in a later message in this thread), yous shouldn't need readers at all to read something i meter away. The diopter wheel should (according to the specs) suit the apparent distance of the viewfinder from beyond infinity to within 1/iii meter (about a human foot).

If one foot isn't close enough for yous to brand out, adding readers volition only brand information technology worse. They move your focus point closer.

Prior to my contempo cataract surgery, my optics were over six diopters nearsighted. That ways they couldn't fifty-fifty focus to 1/6 meter (about 6 inches). Wearing readers would have made that much worse. I did utilize readers when wearing my contact lenses that corrected my vision, because... well, I'm old, and my eyes didn't adjust very well. Now I use readers because the ocular implants don't adjust at all. But the diopter wheel works fine for me.

I desire the negative non the positive diopter finally. At least I think that'south right!?

If you lot're nearsighted (can come across shut stuff simply far stuff is out of focus), yes, that'southward right. It's very rare for someone to demand a positive dioptric adjustment lens.

[I don't really use glasses for general viewing of things in the distance, like a landscape. But, I do need them to see details close upwards.

Wait, what????

If you can get by viewing things at a distance, then the diopter wheel should do the job for you. Full stop.

And of form, I do demand them for something like seeing a PowerPoint presentation at a conference (might be thirty anxiety away) just also for reading the onscreen Television receiver Guide (might be 12 feet away), seeing someone's face clearly downward the hall, or if I needed to see details on someone's face if they were sitting across from me. And at night to cutting the glare of lights in the distance.]

I'm confused nearly your vision. Totally.

And so, how practice I know if I demand Canon Diopter -one, -2, or -3, -4?

In that location's no such thing as a -1. Canon diopters are rated based on their total consequence when mounted on a motion picture photographic camera with a standard -1 diopter viewfinder. And so a -i does zilch.

It says my right eye is +2.25 Sphere with a slight nearsighted astigmatism of -.75. And the Add role says +2.25.

Expect, what???

Is that actually PLUS 2.25 on the Sphere number? That would mean that you're extremely far-sighted. Information technology too would hateful that your 1.5 readers wouldn't exist fifty-fifty close to letting you lot read.

Only the bottom line is this: if you've been performance without glasses, which information technology seems yous accept, the diopter bike should be all you need.

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Re: How to know what dioptric adjustment lens to go?

Wow, I don't even know where to begin in response to your answer.

To answer your confusion about my original question, which is understandable, the Opthamologist suggested that I apply a pair of sometime "readers" that were no longer sufficient for reading and employ them when my distance vision needed verrrry slight assist. This should explain where I mentioned using my former ane.5 drug shop reader glasses for distance.

So, I'm not actually adding "readers' it was just that was what I happened to have at the fourth dimension. the low level (approx i.5 or so readers) are but very similar to what the distance glasses stop upwards beingness.

The internal diopter does not adjust to beingness in focus for me, then it is non "enough" which why I needed the boosted lens.

I didn't include my complete medical history, and so that's probably why it seemed confusing to you. I don't utilize the ane.5s every bit readers anymore, I recall I had said "old readers" and thought that would explain information technology sufficiently. My readers are 2.75 or iii from the drugstore.

A prescription shows the Sphere number as your altitude,

+2.25 Sphere is really your distance non your readers. The readers are the other number that says Add, which in my case likewise happens to be +2.25. My original mail mentioned that I was new to needing Distance glasses. I've been using readers for a few years now, which is why I accept "erstwhile" readers.

I wear readers for reading and now I will clothing distance glasses for driving at night and possibly for things like conferences or reading the tv guide on the tv or I suppose if I didn't know where I was going and needed to read the highway signs a couple seconds sooner than I would otherwise. I won't need them to see the mountains in the distance, but if I desire to wait through a viewfinder and do any manual focusing, then yes, I might demand them, hence the additional dioptric aligning lens. Because I don't want to wrangle altitude glasses AND readers which I volition definitely be using to read the LCD screen.

Gosh, I certainly promise that helps articulate upwards my vision problems and thanks for the effort to try and help anyway.

Re: How to know what dioptric adjustment lens to get?

MollyMalone222 wrote:

models with college eye relief 21-24mm sllow glasses to be worn. Vs 12-15mm isnt enough to wear glasses and view through finder

I'k sorry, I don't know who I've responded to (!). But getting the hang of this forum as I only merely signed upwards this week.

And then, I think I'one thousand articulate at present on picking the -2, but what does the above role mean? I mean I know that you're saying something about altitude of 21-24 mm vs 12-15 mm but where? or what is that associated with? Sorry if that's something I should know?? Like is it the thickness of the lens? or the distance the lens is from the viewfinder? or something else?

Cheers!

Center relief, is the distance (in millimeters) your eye can be from the viewfinder and evidence the full field of view produced by the lens. 16mm of heart relief is a typical minimum for eyeglass wearers.

If you need glasses for corrected 20/20 vision, clothing them when doing photography. To ready the viewfinder diopter, choose a target having well-divers detail at a distance of 50 feet or more. A traffic sign can be a good target. Centre the target in the viewfinder and half-depress the shutter release button top initiate auto focus. Once the camera has locked focus abs while holding the camera steady with one hand, employ the other mitt to suit the diopter knob until the image in the viewfinder appears in skillful focus.

You should be all fix.

Nikon D610 Nikon D500 Fujifilm X-T20 Nikon AF-S Nikkor 16-35mm F4G ED VR Nikon AF-South Nikkor 70-300mm f/4.v-5.6G VR +four more than

Re: How to know what dioptric adjustment lens to go?

MollyMalone222 wrote:

To answer your confusion almost my original question, which is understandable, the Opthamologist suggested that I use a pair of old "readers" that were no longer sufficient for reading and utilise them when my distance vision needed verrrry slight assistance.

In that case, you lot have farsightedness. That agrees with the PLUS 2.25 on your spectacles prescription.

That would also explain running out of aligning on the diopter wheel. That bike will only go to +1, because few people need much positive-side adjustment.

My readers are ii.75 or 3 from the drugstore.

Just curious: is that stiff enough for you? The glasses prescription indicated a iv.5 total for the reading part.

Gosh, I certainly promise that helps clear up my vision bug and thanks for the effort to endeavor and assist anyway.

From all this, it'south now fairly clear to me that you should exist looking for a POSITIVE diopter aligning lens. Since the photographic camera'southward diopter wheel has ii diopters each side of center for fine-tuning, you lot probably desire to go loftier. Going all the way to a +three should be relatively condom -- that would give you lot a range of +1 to +five diopters. You're already at +1 with the diopter wheel (if I empathize correctly).

Here'southward a Catechism article well-nigh dioptric lenses:
https://www.eos-mag.com/manufactures/viewfinder/dioptric.html

Fujifilm X-T10 Fujifilm XF xviii-55mm F2.8-4 R LM OIS Fujifilm XF 27mm F2.8 Olympus Stylus 1030 SW Catechism EOS 350D +13 more

Re: How to know what dioptric adjustment lens to become?

Center relief, is the altitude (in millimeters) your center tin be from the viewfinder and bear witness the full field of view produced by the lens. 16mm of eye relief is a typical minimum for eyeglass wearers.

Oh hey, thank you. I recollect I mentioned to someone else, I was thinking of a different definition of "relief" which is what had me confused. Got it at present though.

If you need glasses for corrected 20/20 vision, article of clothing them when doing photography. To set the viewfinder diopter, choose a target having well-divers particular at a distance of 50 feet or more. A traffic sign can be a good target. Center the target in the viewfinder and half-depress the shutter release button superlative initiate car focus. Once the camera has locked focus abs while holding the camera steady with 1 hand, use the other manus to arrange the diopter knob until the image in the viewfinder appears in adept focus.

You should exist all set.

I was explaining to someone else that I'm not looking to habiliment my spectacles for distance actually when doing photography considering I'll already have to handle reading glasses to read the LDC screen. I've also adapted the internal diopter already using similar directions in a higher place on my tripod. It wasn't plenty, so I needed the additional dioptric adjustment lens in addition to the internal diopter.

I think I've got it all figured out now between all the responses and research and I just ordered a -2. So, we'll run across when it gets here, pun intended! Fingers crossed, it's the right one for me.

Re: How to know what dioptric adjustment lens to go?

In that example, you have farsightedness. That agrees with the PLUS 2.25 on your glasses prescription.

That would besides explicate running out of adjustment on the diopter bike. That wheel will simply go to +1, considering few people need much positive-side adjustment.

My readers are 2.75 or 3 from the drugstore.

Only curious: is that strong plenty for yous? The glasses prescription indicated a 4.5 total for the reading part. Meet my annotate below from today re a new adjustment to this....

From all this, it's at present fairly clear to me that you should be looking for a POSITIVE diopter adjustment lens. Since the camera's diopter bike has ii diopters each side of eye for fine-tuning, you lot probably want to go high. Going all the way to a +three should be relatively condom -- that would give y'all a range of +1 to +5 diopters. You're already at +1 with the diopter cycle (if I understand correctly).

Hither's a Canon commodity about dioptric lenses:
https://world wide web.eos-magazine.com/articles/viewfinder/dioptric.html

Thanks, I've read the article earlier only I'one thousand going to read information technology again and encounter what I missed because I clearly missed something in all my enquiry.

[I went back to the Ophthalmologist today and she gave me a reduction in my prescription since the reader portion was as well strong for me. And then, is the distance portion just it's not too bad, I can live with it. New/Readjusted prescription is Distance/Sphere = ii and Readers/Add = +1.v (I know it doesn't adjust for astigmatism/mine is -.75)

Everything I've read and everyone earlier I institute this forum said to become the negative for distance and so I got the -2. Which is completely useless and zero is in focus!

...So, questions:

... The article says: "The lenses are available in different strengths, typically from –4 dioptres (for brusk-sightedness) to +iii (for long-sightedness)." So, Since I'm Merely looking for a distance diopter, this indicates that I SHOULD have a NEGATIVE not a positive, so now I'm totally confused by the proposition of getting/needing a +three? What am I missing/non understanding here?

...When yous say, I'm already at +ane with the internal diopter bike potential.,. are yous assuming I've adjusted the wheel to the POSITIVE side?

...I idea I'd test the internal diopter WITH glasses to see what that was like if I was using glasseses instead and THAT was fuzzy! I will try this again with the tripod.

[I forgot about the -i built into the camera, so the -2 was actually a -1]

Cheers again!

Re: How to know what dioptric adjustment lens to get?

MollyMalone222 wrote:

... The commodity says: "The lenses are bachelor in different strengths, typically from –4 dioptres (for brusque-sightedness) to +three (for long-sightedness)." So, Since I'yard Merely looking for a distance diopter, this indicates that I SHOULD have a NEGATIVE not a positive, then now I'm totally confused by the proposition of getting/needing a +3? What am I missing/not understanding here?

Showtime, I dubiety that you lot demand a +3, especially given the change you mention from your optometrist. A +two will nearly certainly do the task, and even a +1 might work quite well.

I call up it's just the terminology that's confusing you. A positive diopter will make the screen appear to be further abroad, which is where you're (apparently) better able to focus. A negative diopter makes information technology appear to exist closer.