# Yokogawa CSU-X1 vs Crest X-Light V3 light output **URL:** \ **Category:** Uncategorized\ **Created:** [December 18, 2020, 11:40pm UTC](https://forum.microlist.org/t/yokogawa-csu-x1-vs-crest-x-light-v3-light-output/1240 "2020-12-18T23:40:52Z")\ **Posts on this page:** 1\ **Showing post:** 5
**Author:** ![Andrew\_Seeber](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.microlist.org/andrew_seeber/32/339_2.png) [@Andrew\_Seeber](https://forum.microlist.org/u/Andrew_Seeber)\ **Post date:** [January 3, 2021, 3:15pm UTC](https://forum.microlist.org/t/yokogawa-csu-x1-vs-crest-x-light-v3-light-output/1240/5 "2021-01-03T15:15:37Z")
> I referenced your thread a lot as the [~$200k total](https://forum.microlist.org/t/crest-x-light-v3-spinning-disk-confocal-reviews/565/15) for everything you got was quite jaw-dropping! Do you mainly do fixed imaging where the atypical lines of the cheapest LDI doesn’t matter as much? Switching 470 to 488 and 555 to 577 would have added a fair amount to the price, and the main intended use case will be fast live cell imaging of weakly expressing FPs. I do mostly live cell, 2 camera imaging. My signal is always decent so I’m wasn’t too worried about the LDI being off peak excitation. > One additional consideration in our case are FRAP capabilities–as I understand it, those units need single-mode fibers, so buying extra lasers can get quite expensive, especially if 561 is among the list. Depending on who’s sourcing the lasers (and how many you need), utilizing a galvo switcher is possible and might close the cost difference gap between the X1 and V3. If you just need a simple FRAP setup, I know the Rapp AiWon and the UGA-42 Geo both work with the LDI. --- _[View the full topic](https://forum.microlist.org/t/yokogawa-csu-x1-vs-crest-x-light-v3-light-output/1240)._