Let's talk PORROS! (1 Viewer)

[PeterPS]

Hi Peter,

Good idea, I'm just afraid the 10x50 Fujinon won't work on 10m. focus down!

A garden fence with a small sign in about 25m. is at least as big in the Fujinon 10x50 as in the other two 10x, the subjective impression of the Fujinon 10x70 is slightly smaller.


It is so, when I do the 10x50 Astro with the Fuji I am particularly "close" to the stars, even during the day I have the effect of being a touch closer with this glass, that is really a specialty of the 10x50 and makes the glass this makes it even more attractive, the insight and the feeling of space is really very good. I agree with Dennis on this point.

Andreas

Hi Andreas,
The close focus of the Fujinon 10x50 is 9m (in the specs), which is why I suggested 10m in my post. I would expect that the illusion in question should also be visible for objects that are 25m away from the observer.
Peter

 

[henry link]

I can still easily see the illusion at 25m when I compare the Zeiss 8x50 Porro (baseline 130mm) to the Zeiss 8x56 FL (baseline 74mm). I asked Andreas to measure his 10x50's close focus because both Gijs and EdZ measured it at well beyond its spec, 15m and 50 feet respectively.

Henry

 

[PeterPS]

The closest possible distance and the largest possible difference in objective baselines will show the strongest illusion. I just compared the apparent magnifications at about 5m between a Zeiss Oberkochen 8x50 Porro (baseline 130mm) and a Minolta Weathermatic 8x23 reverse Porro (41mm baseline). The Minolta's apparent magnification seemed to be almost twice the magnification of the Zeiss using two eyes. Using one eye the difference disappeared.

I think any other illusions of magnification differences are very minor compared to the really strong one created by objective baseline differences at close distance. Of course, at longer distances the illusion gradually disappears as the axes of the eyes become more parallel in all binoculars, but it's surprising to me how far the illusion is maintained. I could still detect it slightly at about 200m between the Zeiss and Minolta just now. Andreas, what do you measure for the closest focus through your 10x50 FMT-SX?

Henry

Hi Henry,
Good idea to compare with a reverse porro. Like you I also experience this illusion quite clearly: in a test that I did some time ago, a bird that was about 5m away looked smaller thru an SE 8x32 that when I looked at it without any binoculars!
However it's possible that some people (Andreas?) do not experience this illusion at all.
Peter

 

[Conndomat]

Hi Peter,

I use the Fujinon almost only over long distances, in this area the magnification is no less than in a roof!

Maybe I was wrong in the close range, I don't want to give false information here, so I will check your and Henry's information again tomorrow whether the Fujinon really shows smaller images in the close range.
I will report my findings tomorrow evening ...

Andreas

Edit: > Henry "Post 342" < I will measure the absolute close focus of the Fujinon 10x50!

 

[dries1]

Leica 10X50BA provides me a larger image of a cardinal and Junco at the fence ~ 60 feet away than my SE 10X42s.

Andy W.

 

[Conndomat]

You can use a harness instead of a strap which makes carrying a heavier binocular quite easy. I don't like to brag, but I have been working out lately, and I really don't have any problem carrying the extra pound of the Fujinon FMTR-SX 10x50. Here is a fairly recent picture of me working out at our local gym.View attachment 1363099

Dennis isn't the 10x50 Fujinon more of a pocket binocular on your Athletic?

Here might be an alternative!
The picture shows me crossing the Alps with my handheld binoculars ...

Montierung/Stativ für 150mm | Fujinon | Ferngläser | Beratung | Intercon Spacetec - Alles für die Astronomie

#IndexMetaDescriptionStandard#

www.intercon-spacetec.de

Andreas

 

[dries1]

Andreas,

That was funny, I had to copy that pic of the large Fuji being hand held.

Andy W.

 

[[email protected]]

Leica 10X50BA provides me a larger image of a cardinal and Junco at the fence ~ 60 feet away than my SE 10X42s.

Andy W.

Andy. How do you like 10x42 SE compared to your 10x42 roofs? That is an interesting binocular that seems hard to find any more like the 8x32 SE?

 

[[email protected]]

Dennis isn't the 10x50 Fujinon more of a pocket binocular on your Athletic?

Here might be an alternative!
The picture shows me crossing the Alps with my handheld binoculars ...

Montierung/Stativ für 150mm | Fujinon | Ferngläser | Beratung | Intercon Spacetec - Alles für die Astronomie

#IndexMetaDescriptionStandard#

www.intercon-spacetec.de

Andreas

A Fujinon 25x150 would be a LITTLE hard to hand hold but can you IMAGINE the view of the bird you would get? Maybe with the RIGHT harness it would be doable!

 

[PYRTLE]

So Dennis,
Talk about the warranty on these......... a subject you've discussed and emphasised many times in the past as important when choosing a pair. I'm guessing it is not comparable to other brands you've spoken highly of in the past.
Thanks.

Not so good then ? but given the nature and structure of the company I'm sure they would be more than happy to favourably deal with any issues.

 

[dries1]

Dennis,

The SE 10X42 is an excellent glass even compared to premium glass today, it has a 6 degree FOV that to some is narrow, however it is all usable. Additionally it is also a high transmission glass. I believe Roger Vine still has and uses one to this day. I have an early and a late model in the SE 10X42. The Nikon SE is the only porro I use on a regular basis, all three formats, and they are right up there with the few premium 10X42s I currently use.

Andy W.

 

[Conndomat]

especially the FujinonHi Andreas,
The effect/illusion diminishes with the distance to the target. Because it's an "illusion" it's possible that some people do not notice this scaling effect.

Hello Peter, Henry and everyone ...

Today I tested it, first the absolute near point of my Fujinon 10x50 is exactly 15,40m, that would confirm the measurement of Gijs and EdZ if you take into account the series spread and the different eyes of the users.

To try the size differences, I have a large apple 16m. distance positioned on a table, a Conquest 10x32 and a FL 10x56 served as comparison binoculars.
And indeed, the apple appeared noticeably larger in Conquest and FL than in Fujinon, so I have to revise my statements made yesterday!
At a distance of around 30m. the apple in the roofs was always a little bigger, at around 40m. this effect disappeared at 50m. I could no longer perceive any differences in size.
So I can agree with Peter and Henry, I also see objects in the roof a little larger at close distances, even if this effect does not go quite as far as with Henry.

Later I compared the Conquest and FL, also here the same, a battery on the table at a distance of 4.50 m was visibly larger in the Conquest.

Since I usually only use binoculars for medium to long distances,(especially the Fujinon) I have actually never noticed this effect, learned something again, thank you gentlemen!

Andreas

 

[WJC]

Life is full of questions. One I have is why—since the MTs and FMTs were designed and marketed primarily to the mariner, where IF and close-focus were NEVER an issue—do so many complain about the individual focus and because it won’t focus on the tops of your shoes? Is such really raising the bar of optical/binocular knowledge or just providing another excuse for stacking BBs? ‘Just something to think about.

I never used my FMT-SX or Prostar for bird watching. What was I missing?

Bill

 

[tenex]

Allbinos ranking favor flat field designs. They like flat fields with sharp edges.

You are confusing field curvature with rectilinear/angular distortion which has nothing to do with sharpness.

By the way, can we assume those APM bins are made in China?

 

[elkcub]

Life is full of questions. One I have is why—since the MTs and FMTs were designed and marketed primarily to the mariner, where IF and close-focus were NEVER an issue—do so many complain about the individual focus and because it won’t focus on the tops of your shoes? Is such really raising the bar of optical/binocular knowledge or just providing another excuse for stacking BBs? ‘Just something to think about.

I never used my FMT-SX or Prostar for bird watching. What was I missing?

Bill

What an interesting thought: binoculars designed for different purposes? Are you sure?

Ed

 

[PYRTLE]

By the way, can we assume those APM bins are made in China?

Unlikely; why would a company (APM) that specialises in designing, building and exporting large specialist astronomical telescopes bother with manufacturing a few dozen 50mm porros to market alongside other branded models. Accordingly, they are not marked or advertised as made / assembled in Germany as far as I can tell.

---

 

[albie...]

From what I read over on Cloudy Nights , the APM MS series are made in China .

 

[WJC]

What an interesting thought: binoculars designed for different purposes? Are you sure?

Ed

Yes! But please note the word "primarily."

 

[elkcub]

Yes! But please note the word "primarily."

Okay. What an interesting thought: binoculars primarily designed for different purposes."

I just 🤚🤌✌️✊ when you clear things up. 🪠

Ed

 

[WJC]

Okay. What an interesting thought: binoculars primarily designed for different purposes."

I just 🤚🤌✌️✊ when you clear things up. 🪠

Ed

The Swift Seahawk and Storm King (and all their identical cousins) were designed for marine use. So many other binos were designed for any number of uses. Those mentioned were designed for marine use. Humphrey would tell you the same thing.

Bill