Olight SR91 Review - A Layman's Perspective

AardvarkSagus

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Olight SR91 Intimidator

Playing kid brother to one of the biggest and brightest lights available, the SR91 is no slouch itself when it comes to bright ideas. Descending from a much heralded lineage, this torch definitely has a lot to live up to.


Olight SR91

Meat and Potatoes

While Olight designed the original SR90 to run at full-tilt, the SR91 takes a slightly more pragmatic approach to filling your illumination needs. Olight has reduced the high end output down from 2,200 lumens to still blindingly bright 1,500 in order to nearly triple the available runtime.

Utilizing the same 6-cell proprietary battery pack as its predecessor, the SR91 is a very large light. Its somewhat smaller head does well to reduce the apparent size and heft of the light, but it is still a heavyweight. There is no doubt that this is not going to be an every day carry type of model. It is very purpose built for the times when you need enormous quantities of light for extended periods of time and are willing to sacrifice some portability to get it.


Olight SR91

Thankfully these changes did little to reduce the tight focus of the beam. The large smooth reflector still projects a very tight spot from the enormous Luminous SST-90 LED. What a beautiful beam it is too. There are precious few lights that have decent looking beams without a textured reflector, but this one fits into that category. There aren't any artifacts or imperfections worth mentioning in this beam. This is a good thing too, because thanks to that highly polished smooth reflector, this light remains what it was designed to be: an incredible thrower of a torch.


Polished Reflector

The user interface of the SR91 is identical to that of its predecessor. I smooth operating electronic switch on the barrel of the light. This is really the most logical choice since a tailcap switch on a light of this stature would turn it into one of the most ungainly creations imaginable. Olight has stayed the course, again providing a simple two speed interface. The light has just the simple "Bright" and "Really Bright" modes (and of course the obligatory strobe mode that is thankfully hidden away). It does memorize the last mode used, a feature that I generally count more as a liability than an asset, but with so few modes, it isn't really a problem.

Constructive Criticism

The SR91 Intimidator comes with a very handy shoulder strap just like the original SR90 did. The difference between the two of them however is that on the SR90 the brass attachment brackets were very stable and immobile, but on the new version, they just freely rotated around the light as you moved it. It would still work very well for giving you a bit of a rest when carrying it around, but if you don't have the strap attached, the brackets were incredibly annoying.


The Complete Package

As I mentioned when I reviewed the SR90, the best part of this torch in my opinion is the fact that it has absolutely no aspirations to be anything other than what it is. Because of this, I can find very little to critique. Sure, it could be smaller, but that would sacrifice power, longevity and tight beam focus. It could be lighter, at the expense of heat dissipation and durability. It could be brighter, but only if you bought the SR90 instead, along with its increases in size and heft. This light is what it is and is unapologetic about it. If you don't like it, there is probably another light out there for you.

Conclusions


Even after trading off minor amounts of output for modest gains in portability and a significant runtime advantage, this light still presents itself as unpretentious and purpose driven. While not as completely "illumination overkill" as its predecessor, The SR91 still fits into that mold. When you need all the light you can muster, and size and weight are not to be trifled about, this is definitely one of the lights you reach for.


Olight SR91

Provided for the duration of the review by 4Sevens.com.
 
Aardvark

Thnks for the good review. Enjoyed reading it. Hope you can update it with some beam shots when your time allows.

Kind regards
 
Thanks guys. I might be able to grab a couple beamshots. I am trying to make a time to go out and shoot at least a bunch of the big lights.

As far as the runtime goes, I don't have the equipment to test it well so I will leave that to others, but the stats say the SR90 was 70 minutes, but the SR91 is 3.1 hours. Nearly triple.
 
Light looks big enough to handle the heat. Reducing output was a big mistake in my book. At 2200 lumens I'd be interested. At 1500 lumens it's just too expensive. My guess is reducing output is more about selling SR90's than prolonging output. If the smaller SR91 produced as much output merely sacrificing a little throw it might be tough to get an extra $100 for the more cumbersome SR90. In fact I suspect at 2200 lumens for the exact same price more SR91's would sell than SR90's.
 
I am sure some people agree with you on the output. I hate to play Devil's advocate, but I think there would be a fair number of people to disagree with you about the output as well. In reality, 700 more lumens on top of 1500 would not be a dramatic difference at all. It would most likely only be noticeable in A/B comparisons. That difference isn't even double, and if it was that is still not a huge difference. Most seem to agree that it requires 4x or more the output to appear like a doubling of brightness. The difference between 1500 and 2200 is a much smaller ratio than that.
 
Personally I think the much extended runtime compared to SR90 makes this light very attractive. 1500lm will be experienced as only very slightly dimmer than 2200lm and with three hours runtime I will choose it instead of SR90!
IF I do, because I have to limit the flashlight purchases for long time now... :(
 
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I am sure some people agree with you on the output. I hate to play Devil's advocate, but I think there would be a fair number of people to disagree with you about the output as well. In reality, 700 more lumens on top of 1500 would not be a dramatic difference at all. It would most likely only be noticeable in A/B comparisons. That difference isn't even double, and if it was that is still not a huge difference. Most seem to agree that it requires 4x or more the output to appear like a doubling of brightness. The difference between 1500 and 2200 is a much smaller ratio than that.

Easily handled by offering 3 modes including your 1500 lumens but to be honest if you want runtime the lowest mode is adequate for almost any real use. The entire point of a light like this is output IMO. The more the better. I'd be fine with 3000 lumens for 15 minutes as long as there were a lower mode to switch to for runtime. Don't forget you can buy extra battery packs and quickly change them if needed.
 
For flashaholics more modes would be the obvious answer. From what I gather the intended market is more toward LEO, first responders, and military than us CPF types. From that perspective less bells and whistles is better. The more simple and easy to use the better for people who aren't interested in all the things we are. I am on an Auxiliary Police unit and most of the others in my unit and also the full time officers are not wanting complexity in a light. Just press the button and go seems to best bet for most people in those lines of work.
 
I know this light is a thrower, but how floody is it..
Is the beem to narrow to use in activities like fishing, hiking, hunting and walking around my estates?
(Is the spill so bright so you can see were you walk just in front of your self?)
 
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-700 lm on 2200 it's a -30% more or less the difference between a Quark and a Quark warm white, not so dramatic!

The advance in runtime it's interesting, but I'd better change 1 hour of runtime with a shorter battery pack. At the same time they could maintain a full compatibility with the SR90 battery pack..

2 hours of runtime and smaller package would be a better differentiation from SR90..
 
Is it not possible to have 2200 lumens max, 1500, lumens mid, 800 lumens low and maybe 400 lumens low low in this sort of light?

I agree that users of this sort of light will want maximum throw/light for whatever reason and lower modes will be un-warrented unless someone wants a moon mode for 1000 years???


Steve.
 
Nice review, thanks !

I always appreciate a light that comes with its own luggage......
:twothumbs
 
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Nice review.
I don't know if you still have the light but I was wondering, what is the printed specs on the battery charger's charging voltage and amps?
 
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