Search found 33 matches

by Kashim
Thu Sep 20, 2018 2:50 pm
Forum: Equipment Discussions
Topic: LED light strips for macro light box
Replies: 1
Views: 613

LED light strips for macro light box

I'm looking for an LED light strip I could use for a 2'x2'x2' or 3'x3'x3' light box. These light strips are all over Amazon and eBay, varying wildly in price and quality. They are usually sold in 5m strips that have 300 LEDs on them. The most common ones I see are SMD 3528 (6-8 lumens per chip), SMD...
by Kashim
Wed Mar 23, 2016 11:39 am
Forum: Equipment Discussions
Topic: Comparing Guide Numbers
Replies: 8
Views: 1327

Of course the Yongnuo's are much bigger which may be an important factor. Thanks for the info Mike, and yes size was a very important factor. In fact, I bought a YN-560 IV and returned it due to its size. You're right, the Nissin i40 is much more expensive compared to the Yongnuo, but I was able to...
by Kashim
Sun Mar 20, 2016 1:39 pm
Forum: Equipment Discussions
Topic: Comparing Guide Numbers
Replies: 8
Views: 1327

Alright, sounds good to me! Thanks for looking into it and explaining it Chris, I appreciate it.
by Kashim
Sat Mar 19, 2016 7:32 pm
Forum: Equipment Discussions
Topic: Comparing Guide Numbers
Replies: 8
Views: 1327

Yeah. I wonder if this is a deliberate post to see who can guess the answer. It seems to be a wash. Actually, they're real numbers and it was a real question. The first GN is from the Nikon SB-R200 wireless flash (which I own) and second GN is from the Nissin i40 compact flash (which I plan to buy)...
by Kashim
Fri Mar 18, 2016 6:49 pm
Forum: Equipment Discussions
Topic: Comparing Guide Numbers
Replies: 8
Views: 1327

Comparing Guide Numbers

Hi. I'm wondering how to compare Guide Numbers when they're given at different focal lengths. I'm looking at two different flash units and they say: GN: 33' at ISO 100 at 24mm GN: 131' at ISO 100 at 105mm So obviously the second unit is more powerful, but would it really be almost 4x as powerful as ...
by Kashim
Mon Mar 14, 2016 7:29 pm
Forum: Equipment Discussions
Topic: Diffusion material for softbox
Replies: 19
Views: 4119

Beatsy wrote:Edit: don't forget to look out for a sheet of polariser (if not glued to the glass substrate). That can reduce certain specular highlights on a subject too.
Couldn't find anything other than the 3 sheets I described. If there was a polarizer layer I guess it was glued to to the glass really well.
by Kashim
Sat Mar 12, 2016 8:13 pm
Forum: Equipment Discussions
Topic: Diffusion material for softbox
Replies: 19
Views: 4119

I took apart another LCD screen and this one had 3 layers of the diffusing material. Two of the layers are very transparent and only the third layer seems "frosted" compared to the last screen I took apart, which had just the two frosted layers. I'm guessing I should be using all 3 layers together t...
by Kashim
Fri Mar 11, 2016 10:29 am
Forum: Equipment Discussions
Topic: the ultimate blackening material ;-)
Replies: 1
Views: 533

Yeah, I saw an article about this material on TechSpot the other day, and it looks pretty interesting. The article said it won't be available to the general public anytime soon though. They also had a cool video where they were passing a laser pointer over the material and the beam would just vanish...
by Kashim
Thu Mar 10, 2016 7:25 pm
Forum: Equipment Discussions
Topic: Diffusion material for softbox
Replies: 19
Views: 4119

The computer screen materials are interesting, worth investigation if you have access. Thanks for the suggestions. We don't have more than a few professional photo stores around here, but I'll ask them about diffusion materials the next time I'm there. Finding a dead LCD turned out to be much easie...
by Kashim
Thu Mar 10, 2016 2:35 pm
Forum: Equipment Discussions
Topic: Diffusion material for softbox
Replies: 19
Views: 4119

I am not sure what the material is named, but I think they are called lenticular diffusers. Wow, that sounds pretty cool. Which layers of diffusing materials did you use? Did you use all three layers? Did you have to use a baffle or was it hotspot free just from the LCD material? Compared to stuff ...
by Kashim
Thu Mar 10, 2016 11:06 am
Forum: Equipment Discussions
Topic: Diffusion material for softbox
Replies: 19
Views: 4119

Like you, I've been interested in trying vellum as a diffusion material. But as we know, true vellum is a kind of leather. I have serious doubts that most so-called "vellum papers" will truly resemble vellum as diffusors. I don't expect this vellum paper to be anything like real vellum of course. I...
by Kashim
Wed Mar 09, 2016 7:31 pm
Forum: Equipment Discussions
Topic: Diffusion material for softbox
Replies: 19
Views: 4119

Diffusion material for softbox

Hi. I'm looking for some advice about diffusion material for my softbox. I've tried a few different things like styrofoam, printer paper, paper towel, etc. and finally settled on tracing paper. Right now I'm using 2 layers of tracing paper to diffuse my flash. My softbox is about 2.5" deep and the f...
by Kashim
Tue Mar 01, 2016 1:08 pm
Forum: Equipment Discussions
Topic: Need advice for Sony macro flash options
Replies: 2
Views: 2201

Do you want "TTL auto-exposure" flash or are you content with manual flash settings? If you want/need "TTL auto-exposure" your options are limited. If you are willing to work with manual settings there is a pretty good amount to choose from. I have no need for TTL auto-exposure, so that's not an is...
by Kashim
Sun Feb 28, 2016 2:54 pm
Forum: Equipment Discussions
Topic: Sony extension tube
Replies: 0
Views: 478

Sony extension tube

Hi. I'm looking to buy a set of extension tubes for the Sony A6000/A6300 camera. I currently own a set of Kenko extension tubes for my Nikon D7100 and after looking on eBay I noticed a set of Kenko tubes for Sony cost more than twice what I paid for my Nikon set! Then I started looking at some cheap...
by Kashim
Sat Feb 27, 2016 5:35 pm
Forum: Equipment Discussions
Topic: Need advice for Sony macro flash options
Replies: 2
Views: 2201

Need advice for Sony macro flash options

I've been planning to move to a mirrorless system for a while now and the upcoming Sony A6300 might be the one for me. My biggest problem is that I can't find a good macro flash system to go along with that camera. I'm currently a Nikon user. My macro setup consists of a D7100 body, Tamron 90mm VC m...