How does this compare to LensAlign MKII ? The side ruler doesn't have as many fancy marking as the LensAlign, does that matter?
1252315
Never used the Lensalign MKII. However, the side rule for the datacolor seems to work just fine and has sufficient graduation to make assessemnt and any necessary adjustments to the lens focussing
1258690
No. They won't interchange. The Mk. II lens is slightly bigger and also the camera is thinner because the screen swivel point is not there due to a newer design, and it does not have am optical viewfinder like the G1x.
248081
The first one I got looked like a smudged triangle and it had scratches on and around the lens. The second one I got was much better still not really a dot but much better and this one works fine. I say return it...hope that helps.
1324988
Understand what's going on. This device is just a focus target with a tilted ruler next to it. You are paying for convenient packaging (it neatly collapses into a flat storage configuration) and the quality of construction so you can use it over and over again, transport it, etc. The device itself is totally passive and is not calibrated in any meaningful way. It is up to you to look at the image of the ruler and decide if your autofocus is accurate or if it is front/back focusing. By iterating you adjust your camera's autofocus for best performance; the device just sits there.
280005
The Sigma is an extreme wide angle, but not a fish eye. Straight lines will remain straight (almost). Autofocus works better on my D90 in bright daylight, worse in dim interiors where accuracy suffers.
1025376
Sorry, but I don't have an expert answer. Here's what I did. I simply measured, with a very accurate ruler the exact outside center cross distance on the lens. No matter if it measures in inches or metric, just Google the number for a conversion. Worked perfect for me on the first and subsequent orders.. The covers fit perfect, are very well made and I'm very happy to have this protection for all of my lenses. Hope this "grass-roots" method works for you. Bob D., Maine
1250582
Yes it's a much better lens than the one that comes with the telescope. I have the power seeker reflector. I have 4 X-cel lenses. I always seem to use the same one (8mm-24mm zoom). That way I don't have to change once I have something centered.
1380699
I tried both, sent this one back. There is noticeable difference in sharpness when zoomed in.
767369
There is not much a difference. So which way is more connivance. I prefer to the one on the lens.
2150140
I have not compared it side by side with a similarly sized sensor camera, but I like it enough. I do miss not being able to go wider than 28mm. I dont really like the ergonomics of it. And I hate the propiatary usb connector. Why cant they just use a standard. So overall, if you are a fan on olympus then this is a good bet. It has not won me over. I wonder if the Pentax MX-1 would have been better. It sounds dumb, but the four piece auto lens cap is why I bought this one over the others. Here is a link to a recent night shot. Way cropped. https://flic.kr/p/pt37vT
1380695
The new lens is smaller and lighter, performs just as well and is (or was) slightly less expensive. The downside is that is a tad slower at the long end --6.3 v. 5.6.
1606296
I've had both. They both have the same light gathering abilities, but the version II is smaller and is a bit better optically the the original 14-42, although I think you'd be hard pressed to see the difference in most situations. The version II is a smoother lens, mechanically.
788242
You set the aperture on the adapter and it rotate the tab on the lens. It's trial and error, no set markings.
233937
It looks like the "#883-101" is a newer version for the same model. You may not be able to buy "#880-101". I did a comparison of these two versions and here are differences [values for #883-101], (values for #880-101):1. Angle View: [69.3° - 5.7°], (76.5° - 6.5°)2. Minimum Focus Distance: [13.8" (35.05 cm)], (1.48' (45 cm))3. Elements/Groups: [13/16], (18/14)4. Filter Thread: [62 mm], (72 mm)5. Dimensions (DxL): [Approx. 2.9x3.5" (7.37x8.89 cm)], (Approx. 3.1x4.0" (7.87x10.16 cm))6. Weight: [1.04 lb. (470g)], (1.39 lb. (630g))- Most of other features are the same.I hope this will be helpful. It looks like the "#883-101" is a newer version for the same model. You may not be able to buy "#880-101". I did a comparison of these two versions and here are differences [values for #883-101], (values for #880-101):1. Angle View: [69.3° - 5.7°], (76.5° - 6.5°)2. Minimum Focus Distance: [13.8" (35.05 cm)], (1.48' (45 cm))3. Elements/Groups: [13/16], (18/14)4. Filter Thread: [62 mm], (72 mm)5. Dimensions (DxL): [Approx. 2.9x3.5" (7.37x8.89 cm)], (Approx. 3.1x4.0" (7.87x10.16 cm))6. Weight: [1.04 lb. (470g)], (1.39 lb.... » Read More It looks like the "#883-101" is a newer version for the same model. You may not be able to buy "#880-101". I did a comparison of these two versions and here are differences [values for #883-101], (values for #880-101):1. Angle View: [69.3° - 5.7°], (76.5° - 6.5°)2. Minimum Focus Distance: [13.8" (35.05 cm)], (1.48' (45 cm))3. Elements/Groups: [13/16], (18/14)4. Filter Thread: [62 mm], (72 mm)5. Dimensions (DxL): [Approx. 2.9x3.5" (7.37x8.89 cm)], (Approx. 3.1x4.0" (7.87x10.16 cm))6. Weight: [1.04 lb. (470g)], (1.39 lb. (630g))- Most of other features are the same.I hope this will be helpful. « Show Less
1366888
I bought my unit here on amazon. Just like the other posters the lens in not marked with any specific mfg logo. The instruction manual in the specification section does not mention the mfg of the lens either. We have to remember that we are not buying this for perfect still photos. We are buying this for its high definition video, auto focus, and image stabilization. This is my third video recorder and it is truly amazing.
1134881
I only really used one lens and that was ok. never checked the others. but I will now. sorry I didn't have the answer.
2103644
Iso wont make a difference. You will need to do some math to calculate your "effective F stop". Ne = N(1+M/p)N = f-numberNe = effective f-numberM = magnification = extension from infinity focus / focal lengthp = exit pupil diameter / entrance pupil diameter