Sony E-Mount Lenses in India: Best Lens to Buy for a6400, a6600 and Full-Frame Bodies

Sony E-mount lenses come in two types: E lenses made for APS-C bodies like the a6400 and a6600, and FE lenses made for full-frame bodies like the a7 IV. Both types fit every Sony E-mount body, so for an a6400 or a6600 the best lens is the one that suits what you shoot, not just the one marked E. Below is how the two differ, and which in-stock lens fits each use.

E vs FE: what the letters mean

The mount is the same physical E-mount. The prefix tells you the image circle the lens is designed to cover.

• E means designed for APS-C sensors. Example: the E 70-350mm f/4.5-6.3 G OSS.
• FE means designed for full-frame (35 mm) sensors. Example: the FE 24-70mm f/2.8 GM II.

Sony's support pages say FE and E lenses both work on full-frame and APS-C bodies. On a full-frame body, an E lens records at APS-C coverage, so you use only part of the sensor. An FE lens on an APS-C body uses the middle of its image circle, with no loss of coverage.

Because the APS-C sensor is smaller, the field of view narrows. The crop factor is 1.5x. Sony's own lens specs show this: the FE 50mm f/1.4 ZA is listed as 75 mm equivalent on APS-C, and the E 70-350mm is listed as 105-525 mm equivalent. The number printed on the lens never changes. Only the framing does.

Quick comparison of in-stock lenses

Equivalent figures for the zooms are the printed range multiplied by 1.5.

If you own a Sony a6400

The Sony a6400 has a 24.2-megapixel APS-C sensor. It also comes as a kit with a 16-50mm or 18-135mm lens, if you are buying body and lens together. Either kit lens is an APS-C E lens.

Start with the kit lens for a month. Note which focal length you use most. Then buy for that gap rather than for a spec sheet.

If you own an a6600

The a6600 is also an APS-C body, so the same rules apply. E lenses cover its sensor fully, and FE lenses work with the 1.5x crop. Pick by subject first, then by how much weight you are happy to carry.

Best lens by use

Wildlife, sports and distant subjects

The Sony E 70-350mm f/4.5-6.3 G OSS is the natural APS-C pick. It reaches 525 mm equivalent, weighs 625 g, and has an optical stabilisation switch, a focus hold button and a zoom lock. For safari trips, bird walks and school sports days, it carries easily on a train or a domestic flight. It is not a low-light lens, since the aperture narrows as you zoom in.

Portraits and available light

The Sony Planar T* FE 50mm f/1.4 ZA gives a 75 mm equivalent view on an a6400 or a6600, a classic portrait length. Minimum focus distance is 0.45 m. It has a physical aperture ring with a click switch, which videographers can turn off. It is a full-frame lens, so it is larger than an APS-C prime. If you want something small, this is not it.

Close-ups and product photography

The FE 50mm f/2.8 Macro focuses as close as 16 centimetres and offers 1:1 magnification. At 236 g it stays light on a compact body. It suits jewellery, small products, flowers and food. It is not stabilised in the lens, as the product page notes stabilisation comes from the body.

Weddings and events

The Sony FE 24-70mm f/2.8 GM II is the standard zoom for full-frame bodies like the a7 IV and a7C. It weighs 695 g, has an 11-blade aperture, and is dust and moisture resistant according to the product page. On an APS-C body the range becomes about 36-105 mm, which loses the wide end. For an a6400, that makes it a poor match for tight venues. Use it on full-frame.

Stage, ceremonies and sport from a distance

The FE 70-200mm f/2.8 GM OSS II is described by Sony as the lightest large-aperture G Master telephoto zoom. It is excellent, but it is a full-frame professional lens. On an a6400 it works, but the pairing is front-heavy. Consider it if you plan to move to full-frame later.

Should an a6400 owner buy FE lenses?

Only in two cases. First, you plan to upgrade to a full-frame body and want lenses that carry over. Second, you want the optical quality of a premium lens and accept the extra size.

If you stay on APS-C, an E lens gives you full coverage at a smaller size and weight. If you move to full-frame, FE lenses are the safe buy. An E lens on a full-frame body works, but you are using the crop area only.

Browse the lens collection and filter by what you shoot.

Reading Sony lens names

The letters after the focal length tell you the lens line, using Sony's own naming.

• G marks a Sony G-series lens, and GM marks the G Master line, which sits above G.
• ZA means a Carl Zeiss lens made for Alpha cameras.
• OSS means optical stabilisation inside the lens.
• II means a second-generation model.

The f-number is the widest aperture. A single focal length such as 50 mm is a prime. A range such as 24-70 mm is a zoom. Lower f-numbers let in more light, which helps indoors, at evening functions and in dim halls.

One practical point on stabilisation. Not every lens has OSS. The FE 50mm f/2.8 Macro relies on the body for stabilisation, so check your body supports it before you count on steady handheld shots.

Protecting your lenses in Indian weather

Monsoon humidity and dust are the real enemies of lenses in India. Store them in a padded bag or case, and keep silica gel or a dry cabinet nearby. Our lens case guide covers how to store several lenses safely.

Frequently asked questions

Can I use an FE lens on a Sony a6400?
Yes. FE lenses fit every E-mount body. The framing becomes narrower by a factor of 1.5, so a 50 mm lens frames like 75 mm.

Can I use an E lens on a full-frame Sony?
Yes, but Sony's support pages say the image is recorded at APS-C coverage, so you do not use the full sensor.

Is there a full-frame lens that suits the a6400 well?
The FE 50mm f/1.4 ZA and FE 50mm f/2.8 Macro both work well and give a 75 mm equivalent view. Large zooms like the 70-200mm work, but feel heavy on the small body.

Which lens should I buy first for my a6400?
Use the kit lens first. Then choose by need: the 70-350mm for distance, a 50 mm prime for portraits, or the macro for close work.