Path: ...!news.nobody.at!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: sms <scharf.steven@geemail.com>
Newsgroups: rec.bicycles.tech
Subject: Re: bike light optics
Date: Sun, 31 Mar 2024 14:22:23 -0700
Organization: A noiseless patient Spider
Lines: 17
Message-ID: <uuck6h$20v08$1@dont-email.me>
References: <uu4104$3l4kb$1@dont-email.me> <UfGNN.144098$ET2.44725@fx12.ams4>
 <uu7fnk$i1ei$1@dont-email.me> <7THNN.167309$Pq2.139508@fx06.ams4>
 <uu9l0b$153sr$1@dont-email.me> <Tu2ON.18842975$ee1.2196419@fx16.ams4>
Reply-To: scharf.steven@geemail.com
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Sun, 31 Mar 2024 21:22:26 +0200 (CEST)
Injection-Info: dont-email.me; posting-host="2ebe2c2711d28c0b2c93ac6973ea86b9";
	logging-data="2128904"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX1+nONpNfgKVhnGgf+EFSE0b"
User-Agent: Mozilla Thunderbird
Cancel-Lock: sha1:C7YvI1occeBLcQ2TGKFTtbaqGe0=
Content-Language: en-US
In-Reply-To: <Tu2ON.18842975$ee1.2196419@fx16.ams4>
Bytes: 1974

On 3/30/2024 5:54 PM, Roger Merriman wrote:

<snip>

> The commute light I use is by today’s standards fairly modest but is plenty
> for that usage.

I've never believed in these crazy bright bicycle lights Even on unlit 
MUPs 1500-1800 lumens is sufficient if the optics are correct. For trail 
riding on mountain bikes you may need something brighter and there are 
lights with 2600-3600 lumens available.

Lately, one thing I've seen is annoyingly bright rear flashers, there is 
really no need for a 500 lumen rear flasher! When you're riding behind 
someone they are directly in your field of view for a long time, unlike 
with a front light where they are on the other side of the road and you 
only see their front light, indirectly, for a short time.