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Good for you!
It's always nice to find a real bargain.

I looked it up on eBay and I could not find any more.

Stan

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Looks great! 420ft/1000yds equals 8 degrees which is wide angle for 7x50 but approx 56 degrees apparant field of view so not strictly speaking a wide angle binocular.

Very few 7x50 binoculars have over 7.1 degree field of view (50 degrees apparant).

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Looks great! 420ft/1000yds equals 8 degrees which is wide angle for 7x50 but approx 56 degrees apparant field of view so not strictly speaking a wide angle binocular.

Very few 7x50 binoculars have over 7.1 degree field of view (50 degrees apparant).

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Looks great! 420ft/1000yds equals 8 degrees which is wide angle for 7x50 but approx 56 degrees apparant field of view so not strictly speaking a wide angle binocular.

Very few 7x50 binoculars have over 7.1 degree field of view (50 degrees apparant).

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that's extremely wide angle for a 7x50, if you only knew how large the prism clear aperture and the eeyepiece field stops need to be to accomplish that. There's a vey ggood reason why 7x50s usually do not exceed 7.1°.

Either these are an extremely well made expensive binoocular, or due to angular distortion they do not really provide tthe statted field of view or perhaps there is no field stop and the outer eddge of the field of view has no clearly defined stop orr the outer fieldd illumination is rather poor. One of those needs to be true for this to be claimed an 8° binocular.

edz

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Those are good points. Next clear sky I get I'll do a better star test (the sky was not very clear at all for my first light the other night) and get a better understanding of what these binocs can do.

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I looked it up on eBay and I could not find any more. Stan

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They'll be re-issued in 2061.

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Thanks for the link to the reviews.

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Tasco had a very wide angle 7X50 (Model 421?), which had eyepieces of at least 70 degrees apparent field of view. The prism and field stop apertures were 29mm. The f/3.5 objectives were further reduced to an effective f/3 via focal reducers, mounted either at the rear prism aperture or on barrel extensions as part of the eyepieces (depending, I suppose, on date of manufacture.)

I forget the claimed field, which might have been somewhere in the range of my calculated 11 degrees. Rather wider than this unit's ~8 degrees, which shows it to be eminently possible.

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It was the Tasco model 420. It was listed at 578 Ft. @ 1000 Yds., or 11°. I owned a model 420 for awhile and the images were not very flat. By comparison, the model 410 which is a 7x35 listed at 657 Ft. @ 1000 Yds. offers much better images over a wider field. Jason also made an 11° 7x50 in their Statesman series.

Here's a pic of mine...






Edited by SMark (01/26/13 07:34 PM)

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It was the Tasco model 420. It was listed at 578 Ft. @ 1000 Yds., or 11°. I owned a model 420 for awhile and the images were not very flat. By comparison, the model 410 which is a 7x35 listed at 657 Ft. @ 1000 Yds. offers much better images over a wider field.
Jason also made an 11° 7x50 in their Statesman series.

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Mine Also is a Z model. Any idea what the Z-designation meant?

I remember seeing that Jason 7x50 in a thrift store once. The price was right but the binocs were badly abused so I passed them up.

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