What brand of diopter???

Hi,

I'm thinking for buying a x2 and x4 diopter for my 105mm lens. What's are the good brands?

Cheers

Shaff

I would recommend the Canon 500D and 250D diopters. These are multi element achromatic lenses as opposed to most diopters which are just a simple single lens. The downside is that they are much thicker and more expensive than a normal diopter. But the upside is better image quality.

Will it work on the Sigma 105mm?

I would recommend the Canon 500D and 250D diopters. These are multi element achromatic lenses as opposed to most diopters which are just a simple single lens. The downside is that they are much thicker and more expensive than a normal diopter. But the upside is better image quality.

I think your Sigma uses a 58mm filter so it should work. Why not just get a macromate or subsee wet filter instead?

Will it work on the Sigma 105mm?

Yep, pretty much all lenses use compatible threads on the front. Just read the diameter off the lens (the thread diameter is pretty much always marked on the barrel of the lens) and buy a filter in that size and it will work.

The Canon 500D and 250D diopters are indeed great (and will work on the Sigma). They are, however, pretty thick, so make sure your port is long enough!

I agree with Drew, though -- I prefer external, wet-mate diopters. I use the Macro Mate, and love it. Crop-sensor camera users have had good luck with the SubSea as well.

The Canon 500D is great, but like Eric mentioned, it is thick (10.5mm) . However, much of the width is in the outer flange. So if you are not planning to stack any other threaded diopter or filter on top of it, you can shave off some of the width. I did just this a few months back when I found that despite my best theoretical calculations to the contrary, in practice the diopter still would not fit into my port system (which I had purchased especially for the purpose of being able to fit this in...). I took the 500D to a metal worker thinking they could machhine it down. However it turned out that it was much easier to file down the ledge with a hand held file, because this eliminated the risk of cracking the glass under the pressure and movement. Also, in order to protect the glass from becoming scratched from the reulting metal filings, I covered both sides of the glass with two cutout circles of protective sticky plastic (leftovers from a pack of protective cobvers from iphone in my case). I filed off 1 mm (just enough to take of the "teeth" at the front of the flange) which was enough for me to fit into my port system. However, I would have had "room" to file off much more if needed. Canon 100mm + 500D+ flat port + woody diopter gets me down to filling frame with subjects that are smaller than what I can control "shake" on, but it sure is fun trying!

Thank you all for the info! Now I'll try and get a Canon diopter and see if it will fit into the port with the 105. If not will go for a wet diopter.