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Venus Optics KX-800 Flexible Macro Twin Flash

BH #VEKX800 • MFR #VEKX800
45 reviews
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Venus Optics KX-800 Flexible Macro Twin Flash
Key Features
  • Designed with Two Flexible 18.9" Arms
  • Guide Number: 190' at ISO 100
  • Independent Output Control
  • LED Focus Assist Light
Along with their impressive development of unique macro lenses, Venus Optics has created the versatile KX-800 Flexible Macro Twin Flash to help illuminate your close-up subjects. It has a twin flash design with each head mounted on its own 18.9" long flexible arm. This flash boasts a guide number of 190' at ISO 100 and each head has independent output control for dialing in the perfect ratio for the scene. Also, manual power can be set from 1/1 to 1/128 for 8 levels of adjustment.
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Venus Optics KX-800 Overview

Along with their impressive development of unique macro lenses, Venus Optics has created the versatile KX-800 Flexible Macro Twin Flash to help illuminate your close-up subjects. It has a twin flash design with each head mounted on its own 18.9" long flexible arm. This flash boasts a guide number of 190' at ISO 100 and each head has independent output control for dialing in the perfect ratio for the scene. Also, manual power can be set from 1/1 to 1/128 for 8 levels of adjustment.

Assisting with critical focus on your tiny subjects is an LED assist light, which is able to be positioned exactly where it is needed with its own flexible arm. A fast recycle time of 2-5 seconds will also help in ensuring you won't miss a shot with a fast moving subject. Ensuring compatibility with numerous cameras, it features a standard hot shoe mount as well as a PC sync terminal on the side. It runs on 4 AA batteries.

Long 18.9" flexible arms ensure ideal placement
Head rotates 270° for fine tuning your setup
Daylight-balanced color temperature of 5600K
Stronger arm design compared to previous models
Flash duration of 1/200 to 1/20000 second
Weighs 1 lb
UPC: 683203914659

Venus Optics KX-800 Specs

Key Specs
Guide Number
190.29' / 58 m at ISO 100
Recycle Time
Approx. 2 to 5 Seconds
Exposure Control
Manual
Secondary Illumination
Modeling Light
Color Temperature
5600K
Internal Power
4x AA
Flash
Guide Number
190.29' / 58 m at ISO 100
Flash Duration
1/200 to 1/20000 Second
Recycle Time
Approx. 2 to 5 Seconds
Exposure Control
Manual
Power Range
1/1 to 1/128
Secondary Illumination
Modeling Light
LED
Color Temperature
5600K
Power
Internal Power
4x AA
General
Mount
Shoe Mount
Display
Yes
Off-Camera Terminal
PC
Dimensions (W x H x D)
Not Specified by Manufacturer
Weight
1 lb / 453.6 g
Packaging Info
Package Weight
1.41 lb
Box Dimensions (LxWxH)
9.1 x 8.25 x 3.2"

Venus Optics KX-800 Reviews

Nice flash, needs diffuser option

By Mike
Rated 4 out of 5
Date: 2024-07-11

I really like the flash. I wish it would have come with a diffuser option.

Good but delicate

By Jim
Rated 5 out of 5
Date: 2023-06-18

I rate the ease of use and results of this flash 5 stars, but rate the ruggedness as 2 stars. My first flash was broken right out of the box. Big reason to buy from B&H, they made the exchange low stress, no questions asked. The flexible plastic flash arms are ball and bell shaped socket construction. One of the sockets was split, so the arm would separate. The friction between each ball and its socket is high, the arm is very stiff. This probably contributes to the plastic socket splitting. The replacement flash was OK. I put a drop of penetrating oil on each ball/socket interface in the new flash. This helped reduce the friction and made the arm more flexible. Also, there is not +/- indicator on the battery contacts. There are raised dimples to make contact with the end of the AA sized batteries. The small dimple is for the battery + side, the large dimple is for the battery - side. I used a Milwaukee Inkzall permanent marker to label the + and - dimples on the metal contacts. The flash manual never denotes the polarity for inserting the batteries. Another reviewer noted he destroyed his flash because he inserted the batteries reversed. This flash will stay at my house, I do not plan to use it in the field. It is too flimsy to take much hard use. Otherwise, this is a good flash.

See any errors on this page?

Will this flash work OK with lithium batteries? I ...

Will this flash work OK with lithium batteries? I know that lithium batteries are not recommended for Olympus flashes, but could not find any information for this one in the manual.
Asked by: Kristi
Lithium batteries AA can be used with this product.
Answered by: Kirk R
Date published: 2021-02-15

will this work on a sony a68?

will this work on a sony a68?
Asked by: thomas
Yes, it does. The A68 has the current iteration of Sony hoeshoes (MI) with a center pin. As long as the center pin from the flash meets, it will trigger. Do take note that the Sony MI shoe has very delicate pins at the very back, so please be careful and do not jam the KX-800 too hard into the A68's shoe.
Answered by: Jeremy
Date published: 2021-08-01

Will it work for pentax k3 ?

Will it work for pentax k3 ?
Asked by: Saravana
Yes 100%. The unit will be driven manually only keep in mind there will be no TTL metering offered.
Answered by: hectorm
Date published: 2021-11-07

Why does the site list Q&A 21, yet it states "Be ...

Why does the site list Q&A 21, yet it states "Be the first to ask a question about this item?" Where are the Q&A's?
Asked by: Ron
This is an area to search for clues when to specs don't mention what you are looking for
Answered by: stuart e
Date published: 2020-01-14

Will this work off camera like on a tripod?

Will this work off camera like on a tripod?
Asked by: Christine
Yes, the Venus Optics KX-800 Flexible Macro Twin Flash can be used off camera on a stand.
Answered by: Kenneth C
Date published: 2025-03-16

Is Guide Number of 190 feet at ISO 100 correct? I ...

Is Guide Number of 190 feet at ISO 100 correct? I suspect a typo or manufacturer claim is wrong. For comparison the $989 Canon MT-26EX-RT GN is 85.3 feet. I doubt the Venus unit puts out (190/85.3)^2= 5 times as much light.
Asked by: James M
Since "For any given "correct flash exposure" situation, guide number is simply numerically equal to the aperture number (like the number 8 in f/8) multiplied by the subject distance (like 10 feet)." Here we are seeing approx. f/8 at 24 feet giving one a 190 Guide number. Because this light is for macro work, one would almost never use it at full power, usually no more than 5 feet away.
Answered by: Leonard E
Date published: 2019-08-20

Is it practical to use this flash for non-macro ...

Is it practical to use this flash for non-macro photography? Has anyone used it this way?
Asked by: Richard
Yes, I have used the KX-800 for non-macro photography and there are some advantages in that you have the possibility to have flash lighting from different angles. Not much use for large or distant subjects , but quite nice for portraits and still-life. With a little ingenuity one can also screen the flash lamps differently for softer and sharper effects or colour effects on the same subject.
Answered by: Francois
Date published: 2021-03-11

Is this the new model with a screen on the back, ...

Is this the new model with a screen on the back, or the old one?
Asked by: Bernardo
This is the newer model with the screen on the back.
Answered by: Zachariah
Date published: 2021-02-10
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